Products and Engineering Catalog

Transcription

NHBB
9700 Independence Avenue
Chatsworth, CA 91311
tel: 818.993.4100
fax: 818.407.5020
Astro Division
175 Jaffrey Road
Peterborough, NH 03458
tel: 603.924.4100
fax: 603.924.4419
myonic USA
tel: 818.701.4833
fax: 818.407.5020
NHBB Europe
Siemensstrasse 30
63225 Langen
Germany
tel: (49) 6103.913.341
fax: (49) 6103.913.342
Products and Engineering
HiTech Division
PRECISION DIVISION
:
155 Lexington Drive
Laconia, NH 03246
tel: 603.524.0004
fax: 603.524.9025
PRECISION DIVISION
Precision Division and
Corporate Headquarters
Miniature and Instrument
Torque Tube and Thinex
Custom Specialty
Bearing Assemblies
Middle Size Bearings
www.nhbb.com
© 2012 NHBB, Inc.
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Keeping Technology on the Move
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®
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NHBB
PRECISION DIVISION
NHBB has a long history of providing a vast
array of precision ball bearing solutions to
various industries. With the advent of this
revised, comprehensive catalog, you’ll see that
we’ve worked to define those solutions in an
easy, accessible manner. Within these pages
you will find detailed product listings, accurate measurements and helpful schematics, as
well as conversion charts and explanations of
relevant terminology.
You’ll notice a few additions to this catalog:
new product tables (including torque tube
and thinex bearings, and middle size bearings
up to 2.5 inches O.D.), a helpful size chart,
additional examples of special assemblies for
your review, and updated information within
the engineering section.
Our goal at NHBB has always been to meet
the ever-changing needs of our customers
through innovation. Our reference catalog
is intended to streamline your review of our
offerings and assist in your decision-making
experience.
Thank you for your continued interest in our
products and services.
see reverse for size chart
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NHBB
PRECISION DIVISION
NHBB has a long history of providing a vast
array of precision ball bearing solutions to
various industries. With the advent of this
revised, comprehensive catalog, you’ll see that
we’ve worked to define those solutions in an
easy, accessible manner. Within these pages
you will find detailed product listings, accurate measurements and helpful schematics, as
well as conversion charts and explanations of
relevant terminology.
You’ll notice a few additions to this catalog:
new product tables (including torque tube
and thinex bearings, and middle size bearings
up to 2.5 inches O.D.), a helpful size chart,
additional examples of special assemblies for
your review, and updated information within
the engineering section.
Our goal at NHBB has always been to meet
the ever-changing needs of our customers
through innovation. Our reference catalog
is intended to streamline your review of our
offerings and assist in your decision-making
experience.
Thank you for your continued interest in our
products and services.
see reverse for size chart
66844_InCov.indd 1
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Size Chart
Applications
Represented below are the actual sizes of
various inch and metric series bearings.
O.D.
O.D.
RI–2
.1250"
R202
R103
RI–2 1/2
.1562"
RI–3
MEDICAL AND DENTAL
RI–3332
Handpieces and Drills
.1875"
RI–4
Centrifuges
RI–418
Diagnostic Equipment
.2500"
Artificial Heart Pumps
RI–5
RI–518
RI–5532
RI–5632
Blood Analyzers
1.3780"
.3125"
Cryogenic Pumps
Lasers
RI–618
R–2
RI-541
RI-2420
RI–6632
COMMERCIAL AND MILITARY AEROSPACE
.3750"
Airframe Control Systems
R–2A
R–3
RI–814
RI–8516
Auxiliary Drive Systems
Fuel/Air Valves
Aircraft Instruments
.5000"
R–4
Navigation Systems
RI–1038
Turn Coordinators
1.5000”
RI-543
.6250"
DEFENSE
Missiles
RI–1214
RI–1212
Tanks
UAVs
HIGH TECH/HIGH PERFORMANCE
.7500"
RI–1438
RI–1412
Scanners
RI–1458
Semiconductor Processing
Optical Encoders
Robotics
Galvos
2.0000”
Microturbines
.8750"
RI-544
RI–1634
Turbomolecular Pumps
Flow Meters
1.0000"
RI–1812
1.1250"
RI–1878
2.5000”
i
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Size Chart
Applications
Represented below are the actual sizes of
various inch and metric series bearings.
O.D.
O.D.
RI–2
.1250"
R202
R103
RI–2 1/2
.1562"
RI–3
MEDICAL AND DENTAL
RI–3332
Handpieces and Drills
.1875"
RI–4
Centrifuges
RI–418
Diagnostic Equipment
.2500"
Artificial Heart Pumps
RI–5
RI–518
RI–5532
RI–5632
Blood Analyzers
1.3780"
.3125"
Cryogenic Pumps
Lasers
RI–618
R–2
RI-541
RI-2420
RI–6632
COMMERCIAL AND MILITARY AEROSPACE
.3750"
Airframe Control Systems
R–2A
R–3
RI–814
RI–8516
Auxiliary Drive Systems
Fuel/Air Valves
Aircraft Instruments
.5000"
R–4
Navigation Systems
RI–1038
Turn Coordinators
1.5000”
RI-543
.6250"
DEFENSE
Missiles
RI–1214
RI–1212
Tanks
UAVs
HIGH TECH/HIGH PERFORMANCE
.7500"
RI–1438
RI–1412
Scanners
RI–1458
Semiconductor Processing
Optical Encoders
Robotics
Galvos
2.0000”
Microturbines
.8750"
RI-544
RI–1634
Turbomolecular Pumps
Flow Meters
1.0000"
RI–1812
1.1250"
RI–1878
2.5000”
i
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Table of Contents
Introduction
03
Precision Division
04
Precision Capabilities
06
Basic Technical Information
09
Ultra-High-Speed Bearing Designs
10
Special Designs and Assemblies
12
Part Numbering System
Miniature Inch Series
16
Radial, Open, Unflanged
17
Radial, Open, Flanged
18
Radial, Shielded, Unflanged
19
Radial, Shielded, Flanged
20
Full Ball Complement, Radial, Open, Unflanged and Flanged
21
Full Ball Complement, Radial, Shielded, Unflanged and Flanged
22
Extended Inner Ring, Radial, Open, Unflanged and Flanged
23
Extended Inner Ring, Radial, Shielded, Unflanged and Flanged
24
Modified Dimension, Radial, Open, Unflanged and Flanged
25
Modified Dimension, Radial, Shielded, Unflanged and Flanged
Custom Specialty
30
Angular Contact, Full Ball Complement
31
Angular Contact
32
Radial
36
Torque Tube, Standard Width
37
Torque Tube, Extended Inner Ring
38
Thinex
(continued other side)
ii
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Table of Contents
Metric Series
40
Middle Size Metric Series – Radial, Unflanged
41
Miniature Metric L Series – Radial, Open, Unflanged and Flanged
42
Miniature Metric L Series – Radial, Shielded, Unflanged and Flanged
43
Miniature Metric R Series – Radial, Open, Unflanged and Flanged
44
Miniature Metric R Series – Radial, Shielded, Unflanged and Flanged
Engineering
46
Engineering Services
47
Materials
49
Cages
52
Seals and Shields
53
Internal Bearing Geometry
55
Lubrication
57
Preload and Duplex Ball Bearings
58
Load Ratings and Bearing Life
61
Mounting and Coding
62
Recommended Fits
63
Tolerances
65
Torque
65
Post Service Analysis
66
Interchange Chart
68
Metric Conversion Table
69
Temperature Conversion Table
New Hampshire Ball Bearings, Inc.
72
NHBB Overview
73
Astro Division, Laconia, NH
74
HiTech Division, Peterborough, NH
75
myonic USA, Chatsworth, CA
76
Minebea Co., Ltd.
NHBB reserves the right to change specifications and other information included in this catalog without notice.
All information, data, and dimension tables in this catalog have been carefully compiled and thoroughly checked.
However, no responsibility for possible errors or omissions can be assumed.
www.nhbb.com
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Introduction
Contents
03
Precision Division
04
06
09
10
12
1
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www.nhbb.com
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Introduction
Precision Division
NHBB’s Precision Division has a longstanding commitment to cost-competitive
volume production methods for nonstandard, ultraprecision miniature and instrument
bearings as well as medium-size bearings up to 2.5 inches in outer diameter. We provide
significant technical expertise by working collaboratively with our customers throughout
the product development process. Our applications engineers incorporate design
innovations in a broad range of bearing construction types, and always leverage the
latest technologies to achieve optimal performance and customer satisfaction.
Our commitment to research and development, as demonstrated by our modern product
development and testing lab, has strengthened our ability to offer unique solutions,
especially in high speed and low torque applications. With our expanded testing
capabilities, we are able to simulate customer application parameters, which results in
bearings that last longer, perform more consistently, and run quieter. We are also proud
of several industry firsts, including our patented silver-polymer retainer, which extends
bearing life by up to 60%.
The Precision Division factory in Chatsworth, California features advanced CNC
equipment for machining and grinding, and a Class 1000 clean room where all bearing
assembly takes place. This is also the state-of-the-art location for unique lubricant
processing, functional testing, precise dimensional coding of ring components, and
laser marking.
Our commitment to excellence and our strong customer partnerships reveal a
deeper goal…Keeping Technology on the Move®.
3
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Introduction
ENGINEERING SUPPORT
Experienced sales and applications engineers
work closely with you throughout the product
development process to create customized
bearings for unique applications. We offer:
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DESIGN FLEXIBILITY
Working from preliminary design concepts,
we’re able to customize bearings to meet your
specific application challenges. Our focus is to
maximize value to our customers by providing
cost-effective solutions. What makes design
flexibility possible?
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Ř3URSULHWDU\UHWDLQHUGHVLJQV
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coatings for extreme environments
QUALITY CERTIFICATIONS
We offer exceptional quality with an emphasis
on dimensional accuracy, process control, and
FOHDQOLQHVV :H DUH FHUWLILHG WR WKH ODWHVW ,62
and aerospace standards, including:
Ř,62
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www.nhbb.com
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Introduction
RESEARCH & DEVELOPMENT
NHBB’s product development and testing department works closely with our technology partners
to develop innovative solutions to demanding
applications. Our ongoing commitment includes
researching and validating processes and materials
that will reduce torque, minimize heat generation,
and extend the operational life of each bearing we
manufacture.
CLASS 1000 CLEAN ROOM
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dynamic noise and vibration analysis equipment
and extensive assembly resources to meet
specific application challenges, such as:
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ENVIRONMENTAL COMMITMENT
NHBB's formal environmental policy emphasizes
pollution
prevention,
regulatory
compliance,
continuous improvement in reducing environmental
impacts, and the promotion of environmental
awareness
among
our
employees
and
the
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5
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Introduction
Ball Bearing Components
ROOM TEMP.
HARDNESS (HRC)
Viewing a cross-section of a standard ball bearing can help you
MATERIAL
SPECIFICATION
MELT
METHOD
ATTRIBUTES
&
$06
&(90
$06
&(90
select a bearing with the appropriate components for your
design or application, as it illustrates the relative position of
these components in the ball bearing assembly.
Cross-section View of a Ball Bearing
O.D. Chamfer
Bearing
Width
Flange
Undercut
RINGS
3UHPLXP
quality
Very low
impurity
level
3UHPLXP
quality
/RZLP
purity
level
*440C stainless steel is the preferred material with the best availability.
**Consumable Electrode Vacuum Melted
Snap Ring
Stainless Steel Shield
BALLS
Seal or Shield
Groove
Inner Ring
Outside Diameter
(O.D.)
Inside Diameter
(BORE)
I.D. Chamfer
Design
Inner Ring Raceway
The design of a bearing is critical in determining its load carrying
Inner Ring Land
capacity and maximum operating speed—factors which directly
Stainless Steel
Ribbon Retainer
impact the bearing’s operating life. Various types of bearings
have been designed to meet the operating parameters of your
Outer Ring Land
application.
Inner Ring Face
Outer Ring
The radial or conrad bearingDOVRUHIHUUHGWRDVGHHSJURRYHLV
Outer Ring Face
Outer Ring Raceway
the most popular type due to its ability to handle both radial
loads and thrust loads in either direction. This type is offered with
various seal or shield options.
Bearing Selection
The angular contact bearing is designed with a relieved shoul-
To ensure optimal speed and load carrying capacity, several
der to allow for a greater number of balls, thereby increasing its
factors must be considered when choosing the proper bearing
load carrying capacity. The angular contact design also allows
for your application. These factors include ring material, design,
for the use of a full section cage, which is desirable for high speed
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applications. This type of bearing can handle thrust loads in one
direction only.
Materials
Miniature and instrument bearings are normally made of either
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steel for applications that require corrosion resistance and 52100
chrome steel for maximum fatigue life. These materials are heattreated to achieve optimum hardness and dimensional stability
and they are suitable for most applications. When more difficult
operating conditions necessitate an alternative to standard
PDWHULDOV1+%%RIIHUVDVSHFLDOL]HGVWDLQOHVVVWHHO''DV
ZHOODVH[RWLFPDWHULDOVOLNH%*® and nitrogen-enriched steel.
Radial
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Angular Contact
BG42® is a registered trademark of Latrobe Specialty Steel Company.
www.nhbb.com
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Introduction
Seals and Shields
ABEC Grade
6HDOVDQGVKLHOGVDUHXVHGLQEDOOEHDULQJVWRUHWDLQOXEULFDQWV
:KHQ FKRRVLQJ WKH $%(& JUDGH WKH IDFWRUV WR FRQVLGHU
and prevent particulate contamination from reaching critical
include radial and axial runout requirements, bore and O.D. fits,
VXUIDFHV 6KLHOGV DUH SRSXODU IRU PRVW DSSOLFDWLRQV VHDOV DUH
and audible noise level. The table below shows the bore and
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2'VL]HWROHUDQFHVDQGWKHUDGLDOUXQRXWOLPLWVIRU$%(&JUDGHV
offer greater deterrence to particulate contamination but increase
WKURXJK *UDGHV DQG DUH SUHIHUUHG IRU PRVW VWDQGDUG
torque and limit operating speed. NHBB offers a variety of enclo-
applications.
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RADIAL
RUNOUT
describes these options in greater detail.
Cages
ABEC
GRADE
The cage, also referred to as the retainer or separator, is the component that separates and positions the balls at approximately
equal intervals around the bearing raceway. Proper selection of
a bearing cage is critical for meeting the load, speed, and
temperature requirements of your application.
The standard cages for radial or conrad miniature and instrument
ball bearings are stamped metal ribbon or crown. The application
ƃH[LELOLW\DQGORZFRVWGHVLJQRIWKHVHW\SHVPDNHWKHPDSSUR-
O.D.
SIZE
MEAN DIAMETER
TOLERANCE
INNER
RING
OUTER
RING
BORE
O.D.
3
LQ
PP
3
LQ
PP
3
LQ
PP
RYHU
LQ
RYHUPP
priate for most general purpose applications. For high speed
applications, machined cages made of phenolic, polyamide-
The chart on page 63 provides a complete description of the
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WROHUDQFHVFRQWUROOHGE\WKH$%(&OHYHO1RUPDOO\UDFHƂQLVKDQG
(QJLQHHULQJ6HFWLRQIRUPRUHGHWDLOVRQFDJHRSWLRQV
UDFHJHRPHWU\DUHVXSHULRULQ$%(&3DQGKLJKHU1+%%UHFRPmends these grades for precision assemblies where low noise
PHFKDQLFDORUDXGLEOHPLQLPDOUXQRXWDQGORQJOLIHDUHLPSRUtant considerations for noise sensitive applications.
One-piece Crown,
Metallic, Stamped
Two-piece Ribbon, Metallic,
Stamped and Crimped
One-piece Crown,
Phenolic, Machined
7
66844_Text.indd 9
One-piece Full Type,
Polymer, Machined
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11/16/12 9:45 AM
Introduction
Radial Play
Packaging
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NHBB packaging is specifically designed to keep bearings clean
balls and the races with no load applied to the bearing in any
and undamaged through the delivery process. We perform pack-
GLUHFWLRQ5DGLDOSOD\LVQHFHVVDU\WRDFFRPPRGDWHGLIIHUHQWLDO
aging operations in our Class 1000 clean room to prevent
thermal expansions, the effects of interference fits, and to
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FRQWUROD[LDOSOD\DQGGHƃHFWLRQ7KHFKDUWRQSDJHVKRZVWKH
integrity, bearings should be kept in their original packaging until
suggested radial play for some typical applications.
ready for installation.
Lubricant
NHBB’s bearings are normally packaged in plastic vials, eight or
PRUHSHUYLDO,ISUHOXEULFDWLRQRUDSURWHFWLYHFRDWLQJLVQRWVSHF-
There are hundreds of lubricants available for ball bearings and
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each has a particular characteristic that makes it suitable for a
prevent corrosion.
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torque is a problem, grease is preferred for prelubrication since it
Vial Pack (No Code) Ŏ(LJKWRUPRUHSHUYLDO$WUDQVSDUHQW
is less susceptible to migration and leakage. Grease can in-
resealable tube of an appropriate size.
crease bearing torque by a factor of 1.2 to 5.0 depending on the
Pill Pack (Code P) – One bearing per sealed, plastic com-
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partment. Connected in strips of four. Pill packs are formed
further information.
from strips of transparent, heat-sealed plastic.
Marking
Unit Pack (Code U) Ŏ,QGLYLGXDOEHDULQJSODFHGLQDVHDOHG
The following figures illustrate the standard marking system used
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IRU 1+%% 3UHFLVLRQ 'LYLVLRQ EDOO EHDULQJV SHU 0,/67'
pack is used for many of the larger size bearings that cannot
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fit in a strip pack.
52100 chrome alloy steel.
Box (Code B) Ŏ ,QGLYLGXDO ER[ XSRQ UHTXHVW DW DGGLWLRQDO
FRVW $OO PHWKRGV RI SDFNDJLQJ KDYH DQ LQWHUPHGLDWH ER[
Quantities vary.
ABEC 5, 7 and Higher Tolerances
$OOLQWLPDWHDQGH[WHUQDOSDFNDJLQJLQFOXGHVDFOHDUDQGGHWDLOHG
label that provides:
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– “Brg. No.” which describes the basic bearing
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Ŏ œ6SHFŔVHFWLRQZKLFKGHWDLOVJURXSVWKURXJK
440C
52100
Ř 4XDQWLW\
Ř1+%%3UHFLVLRQ'LYLVLRQFDJHFRGH
Ř0DQXIDFWXULQJORWQXPEHU
ABEC 1 and 3 Tolerances
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Other packaging options are available to suit your specific
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more information.
440C
www.nhbb.com
66844_Text.indd 10
52100
8
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Introduction
NHBB is recognized as the leader in the design and manufacture
of ultra-high-speed bearings, which can operate at speeds up to
500,000 rpm. This capability is based on an unwavering commitment to superior product design, backed by a cutting-edge
product development and test laboratory. Our lab is dedicated to
validating new retainer materials, in addition to conducting exhaustive testing of new lubricants and surface treatments—all
with the goal of extending bearing operational life.
,QRUGHUWRRSHUDWHDWXOWUDKLJKVSHHGVLQH[FHVVRIUHYRlutions per second, bearing components must be made from the
best materials available and manufactured to extremely tight
WROHUDQFHV 8OWUDKLJKVSHHG EHDULQJV VKRXOG DOVR LQFOXGH D
machined retainer made from a specialty material that provides
lubricity, lower thermal expansion, resistance to high temperatures, and the option of autoclavability.
Our applications engineers work collaboratively with you to
ensure the best bearing design for your ultra-high-speed appliFDWLRQ,QGRLQJVRZHRIIHUVHYHUDOGHVLJQIHDWXUHV
Ultra-precise Tolerances*
Machined Retainers
Exacting dimensional accuracy of bearing raceways
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DQGDOOSLORWLQJVXUIDFHVŏEHWWHUWKDQ$%(&
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NHBB offers:
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– Meldin®
honed lands
Ŏ3KHQROLFZRYHQOLQHQRUSDSHU
Ř5DFHZD\URXQGQHVVEHWWHU
– Polyamide-imide
than 0.000010 in. on average
– Patented silver coated machined Torlon® retainer—
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ances—available within
crown or full. Extends operational life in marginally
0.0001 in.
lubricated applications and provides added benefit with
the antimicrobial properties of the silver coating
Ř6WHHOEDOOVŏ*UDGHRU
For more information on machined retainers, see pages 49
better
through 51.
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VWDQGDUGLQVSKHULFLW\
Optimal Lubricant Type and Fill
*To specify the features referenced above,
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notate “MC” in the NHBB part number.
VLOLFRQHSRO\PHUVDQGƃXRULQDWHGFRPSRXQGV
Ř6XSHULRURSHUDWLQJFKDUDFWHULVWLFVŏOXEULFLW\DQG
High Quality Bearing Steel
load carrying properties, wear resistance, life, and
Ř&VWDLQOHVVVWHHOŏRIIHUVH[FHOOHQWSURSHUWLHVZLWK
corrosion resistance
optimal hardness and dimensional stability, low noise,
Ř&XVWRPL]HGƂOOFRQVXOWWKHIDFWRU\IRUQRQVWDQGDUG
as well as economical price points
fill ratios
For more information about bearing steel, see page 47.
For more information about lubricants, see pages 55 and 56.
Meldin® is a registered trademark of Saint-Gobain Performance Plastics Corporation.
Torlon® is a registered trademark of Solvay Advanced Polymers, L.L.C.
9
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11/16/12 9:45 AM
Introduction
Today’s high technology products demand increasingly sophisti-
Our experienced staff will help you design quality, cost-effective
cated bearing designs. NHBB stands ready to support your
next-up bearing assemblies for your specific applications—and
needs with:
manufacture them in small or volume production quantities.
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Below are a few examples of the unique designs and special
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features we offer. They include ceramic balls, machined retainers,
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anti-rotation slots, integral shields, extended rings, and custom
double row configurations. Contact us to learn more about how
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we can assist you with your customization needs.
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and assembly
Ř 1H[WXSEHDULQJDVVHPEOLHVDQGVXEDVVHPEOLHV
Special Assemblies
Integral Duplex Designs
Bearing Pin Assembly
Pulley Assembly Bonded to
Discrete Sealed Bearings
Flanged Integral Duplex Bearing
with Extended Inner Ring
Double Row Miniature Cam Follower
Assembly with Threaded Shaft
Pulley Assembly with Discrete
Shielded and Flanged Bearings
Integral Duplex Angular
Contact Bearing
www.nhbb.com
66844_Text.indd 12
10
11/16/12 9:45 AM
Introduction
Custom Designs
Integral Shield, Custom Machined
Retainer, Ceramic Balls
Double Row,
Full Ball Complement
High Speed Dental Bearing
with Integral Shield
Custom Machined Retainer,
Ceramic Balls
Double Row, Spherical O.D.
Metric Radial Bearing
with Anti-rotation Slots
Extended Outer Ring with Flange
High Speed Angular Contact Bearing
with Custom Machined Retainer
End Cap for Gyro Application
Custom Flange with Mounting Holes
Shielded Miniature Double Row Bearing
Duplex Set with Matched Spacers
11
66844_Text.indd 13
www.nhbb.com
11/16/12 9:45 AM
Introduction
EXAMPLE:665,==(($+$&;;3/23
5,))$3/*8
GROUP 1
GROUP 3
GROUP 4
GROUP 5
GROUP 6
5,1*0$7(5,$/ %$//0$7(5,$/
GROUP 2
7<3(
%$6,&6,=(
6($/6
6+,(/'6
02',),&$7,216 '83/(;3$,56
SS
SS
S
S
S
RI –
RIF –
418
1438
ZZ
EEA62
No Code=Chrome
DOOR\VWHHO
C=Chrome alloy
VWHHO
used only in
combination with
FHUDPLFEDOOV(
D=VHULHV
martensitic
stainless steel
S=$,6,VWDLQOHVV
VWHHO&
No Code=Chrome
DOOR\VWHHO
E=Ceramic
S=$,6,VWDLQOHVV
VWHHO&
T=TiC-coated
F=Flanged,
tapered O.D.
FR=Duplex pair
with one flanged
and one unflanged
bearing
MBF=,QQHUULQJ
relieved and
separable, outer
ring flanged and
O.D. tapered
MBRI, MBR,
MBL=,QQHUULQJ
relieved and
separable
MBRIF, MBRF,
MBLF=,QQHUULQJ
relieved and
separable, flanged
outer ring
MDF=,QQHUULQJ
relieved and
nonseparable,
outer ring flanged
and O.D. tapered
MDRI, MDR,
MDL=,QQHUULQJ
relieved and
nonseparable
MDRIF, MDRF,
MDLF=,QQHUULQJ
relieved and
nonseparable,
flanged outer ring
MERI, MER,
MEL=Outer ring
relieved and
nonseparable
MERIF, MERF,
MELF=Outer
ring relieved,
flanged and
nonseparable
RI, R, L=5DGLDO
RIF, RF, LF=
Flanged radial
RIFW, RFW,
LFW=Flanged
with nonstandard
flange width
URI, UR=Double
row radial
URIF=Double
row radial, flanged
Inch Series
First one or two
digits indicate
O.D. in 16ths of an
inch. The following
two or three digits
indicate the bore
size in a fraction of
an inch, the first
digit being the
numerator and the
second or the
second and third
digits being the
denominator.
Metric Series
First two digits
indicate O.D. in
PP6HFRQGWZR
GLJLWVLQGLFDWH,'
in mm.
X=IROORZLQJEDVLF
VL]H,QGLFDWHV
special internal
design, assigned
in numerical
sequence, i.e.,
X1, X2, etc.
Enclosures
D=6LQJOHUXEEHU
seal
DD=Double
rubber seal
D1=6LQJOH9LWRQ®
seal
DD1=Double
Viton® seal
DO 6LQJOH
seal on side
opposite flange
DZ 5XEEHUVHDO
and shield
H 6LQJOH
metallic shield,
nonremovable
HH=Double
metallic shield,
nonremovable
L=6LQJOHJODVV
reinforced PTFE
seal
LL=Double glass
reinforced PTFE
seal
L(L) BP=Glass
reinforced PTFE
VHDOVZLWKPHWDO
EDFNLQJSODWHV
LO=6LQJOHVHDO
on side opposite
flange
LZ=Glass
reinforced PTFE
seal and shield
with seal on flange
side
Q(Q)=Glass
reinforced PTFE
VHDOVOLSULGLQJ
Q(Q)4=Glass
reinforced PTFE
VHDOVZLWK
protective
VKLHOGVOLSULGLQJ
S 6LQJOHUXEEHU
seal, noncontact
SS=Double rubber
seal, noncontact
Z 6LQJOHPHWDOOLF
shield, removable
ZL=6KLHOGDQG
glass reinforced
PTFE seal with
shield on flange
side
ZO=6LQJOHVKLHOG
on side opposite
flange
ZZ=Double
metallic shield,
removable
Extended
Inner Ring
EE=Both sides
E=One side
SB=%*®
X=Chrome alloy
VWHHO
used only in
combination
with TiC-coated
EDOOV7
Y=6SHFLDOW\DOOR\
Special Series:
RA _ _ _ _=Pulley
W\SHDVVHPEOLHV
VKDIWDVVHPEOLHV
PHFKDQLFDOSDUWV
WDSHJXLGHV
special bearings
Z IROORZHG
by letter and
QXPEHUV
,QGLFDWHVHQGFDS
www.nhbb.com
66844_Text.indd 14
Special External
Dimension
A _ _ /DUJHUWKDQ
standard O.D.
A _ _ _ _ /DUJHU
O.D. than
standard and
special width
A 6HPLVWDQGDUG
larger width and
O.D. bearing
B 6SHFLDOERUH
tolerance
G 6SHFLDO
external groove
in bearing
N /DUJHURU
smaller bore than
standard
W=Wider than
standard width
Y=Narrower than
standard width
GROUP 7
GROUP 8
35(0,80
)($785(6
S
Duplex
DB=Back-to-back
configuration
DF=Face-to-face
configuration
DT=Tandem
configuration
DU 8QLYHUVDO
duplex
Numbers following
letter code
indicate mean
preload in pounds.
,IQRWIROORZHG
by a number,
standard preload
is applied.
MC=Premium
ball & race
finish for torque
sensitive and
ultra-high-speed
applications
Special Design
CV 6SHFLDOUDFH
curvature
SD 6SHFLDO
design bearing
Viton® is a registered trademark of DuPont.
12
11/16/12 9:45 AM
Introduction
GROUP 9
GROUP 10
GROUP 11
GROUP 12
GROUP 13
GROUP 14
GROUP 15
&$*(
$%(&
72/(5$1&(
',0(16,21$/
&2',1*
5$',$/
3/$<
72548(
/8%5,&$17
3$&.$*,1*
SS
SS
S
SS
S
SS
S
H
F
A5
A7
CXX
P25
P13
LO1
LG49
P
U
CR=5LEERQ37)(
coated
F=Full ball
complement
H=Crown, land
piloted
J=Crown, acetal
JM=Full type,
acetal
JN=Full type,
molded acetal
KB=Crown,
phenolic, paper
base
KC=Crown,
phenolic, linen
base
KF=Crown,
phenolic, linen,
nonkeyhole type,
outer land piloted
KG=Crown,
phenolic, paper
base, outer land
piloted
KM=Full type,
phenolic, linen
base
KN=Full type,
phenolic, paper
base
M4=Full type,
polymer
M5=Crown,
polymer
PH=PGM
Hi-temp
R=5LEERQODQG
piloted
RD=5LEERQEDOO
piloted
SC=Crown, silver
plated polymer
SF=Crown, silver
plated polymer
SL=6OXJ37)(
T1=6SHFLDOW\
material
TT=Toroids, PTFE
A1 $%(&
A3 $%(&3
A5 $%(&3
5T
A7 $%(&3
7
A9 $%(&3
Note:6HOHFWHG
$%(&
tolerances are
available on all
sizes. Please
consult factory.
C0X=O.D. coding
only, .0001
increments
CX0=,'FRGLQJ
only, .0001
increments
CXX=,'DQG
O.D. calibration in
.0001 increments
C04=O.D. coding
only, .000050
increments
C40=,'FRGLQJ
only, .000050
increments
C44=,'DQG2'
calibration in
.000050
increments
P=Followed by
two, three, or
four numbers
indicates the
radial play limits in
ten thousandths
of an inch.
Example: P25
indicates
radial play of
.0002” to .0005”.
PA _ _ _ =Nominal
axial play
Example:3$
indicates axial
play of .0015
PC _ _ =Nominal
contact angle in
degrees
/XEULFDQWOHWWHU
codes are
followed by a
number to
indicate specific
type.
BC=Following
lubricant code
indicates barrier
coating.
LB=Mixture of oil
and solvent
LD=Dry–no
lubrication
LF=Dry film
LG=Greases
LM=Mixture of oil
and grease
LO=Oils
LRD=Temporary
lube code
LY=Expanded
list of oils and
greases
No Code=Plastic
sealed vial
B=,QGLYLGXDO
boxes
E ,QGLYLGXDOSDFN
SHU0,/%
K=Kraft foil
package
KB=Kraft bag
and box
P=Pill pack
PB=Pill pack
and box
U 8QLWSDFN
UB 8QLWSDFN
and box
$PLQLDWXUH
and instrument
bearings of
both the metric
and inch
configurations
meet the
tolerances of
$%0$6WDQGDUG
IRU$%(&
metric series
bearings.
RT=Followed by a
number indicates
maximum running
torque in hundreds
of mg-mm.
Example:57
indicates a
maximum running
torque of 1,500
mg-mm.
T=Followed by a
number indicates
maximum
starting torque
in hundreds of
mg-mm.
Example: T15
indicates a
maximum starting
torque of 1,500
mg-mm.
Grease Plate
Code
IROORZVOXEULFDQW
FRGH
GPL /LJKW
GPM=Medium
GPH=Heavy
IMPORTANT NOTE:
The NHBB numbering system identifies ball bearing
size and design. This system is not a guide to create
a customized ball bearing. Please use the numbering
system to decipher the basic bearing numbers listed
in this catalog, or to define a number given to you by
a representative of NHBB. Please consult a member
of the NHBB sales or engineering staff to help you
design a new bearing or to interchange another
manufacturer’s part number.
13
66844_Text.indd 15
www.nhbb.com
11/16/12 9:45 AM
www.nhbb.com
66844_Text.indd 16
14
11/16/12 9:45 AM
Contents
16
Radial, Open, Unflanged
17
18
Radial, Shielded, Unflanged
19
20
Full Ball Complement, Radial, Open, Unflanged and Flanged
21
Full Ball Complement, Radial, Shielded, Unflanged and Flanged
22
Extended Inner Ring, Radial, Open, Unflanged and Flanged
23
Extended Inner Ring, Radial, Shielded, Unflanged and Flanged
24
Modified Dimension, Radial, Open, Unflanged and Flanged
25
Modified Dimension, Radial, Shielded, Unflanged and Flanged
15
66844_Text.indd 17
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11/16/12 9:45 AM
Radial, Open, Unflanged
r
r
r
r
Lo
Ribbon Cage
CAGE
TYPE
Crown Cage
B
BORE
d
*
BASIC P/N
RIBBON CROWN
Lo
d Li D
O.D.
D
INCH
(mm)◊
INCH
WIDTH
B
(mm)9
LAND DIAMETER
(REFERENCE)
INCH
(mm)◊
Li
Lo
d Li D
B
FILLET
RADIUS
r
BALL
COMPLEMENT
LOAD RATINGS**
LB.
NO.
Z
DYN.
C
STATIC
Co
SIZE
Db
BRG.
WT.
GMS. ▼
665,
665,
665,
665,
665,
+
+
+
+
+
.0400
.0469
.0550
.0781
.0937
1.016
.1250
.1562
.1875
.2500
.1875
6.350
.0469
.0625
.0781
.0937
.0625
665,
665,
665,
665,
665,
5
5
5
5
+
+
+
.0937
.0937
.1250
.1250
.1250
.1875
.3125
.2500
.2500
.3125
6.350
6.350
.0625
.1094
.0937
.0937
.1094
665,
665
665$
665,
665,
5
5
5
5
+
+
+
+
.1250
.1250
.1250
.1562
.1562
.3750 .1094
.3750 .1562
.5000 .1719
.3125 .1094
.3125 .1094
665,
665,
665,
665
665,
5
5
5
+
+
+
+
.1875
.1875
.1875
.1875
.2500
6.350
.3125 .1094
.3125 .1094
.3750 .1250
.5000 .1562
.3750 .1250
665,
665
665,
665,
665,
5
5
5
5
5
+
+
+
.2500
.2500
.2500
.3125
.3750
6.350
6.350
6.350
.5000
.6250
.7500
.5000
.6250
.1250
.1960
.2188
.1562
.1562
665,
665,
665,
665,
665,♦
665,♦
5
5
5
5
.3750
.5000
.5000
.6250
.7500
.8750
22.225
.8750
.8750
1.1250
1.3750
1.6250
1.8750
22.225
22.225
.2188
.2188
.2500
.2812
.3125
.3750
Notes:
1. Inch to metric conversion—see page 68.
2. Basic part numbers shown above include
code “SS” for AISI 440C stainless steel. If SAE
52100 chrome alloy steel is desired, delete "SS."
3. See page 63 for ABEC tolerances.
4. r=Maximum shaft or housing fillet radius that
bearing corners will clear.
5. Open bearings may or may not have shield
grooves (detail not shown in the above drawings). Consult the factory for reference information regarding the shield recess diameter.
www.nhbb.com
66844_Text.indd 18
Ribbon or “H” Crown cages are available
* “R”
as indicated. Please consult with factory for
machined cage availability.
◊ Metric dimensions are for reference only.
** Load ratings are based on ABMA Standard #12.
♦ Limited retainer options available.
Please consult with factory.
▼ Bearing weights are for reference only.
16
11/16/12 9:45 AM
r
r
r
r
D Li d
Lo Df
D Li d
Ribbon Cage
Lo D f
Crown Cage
Bf
Bf
B
CAGE
TYPE
BORE
d
*
BASIC P/N
RIBBON CROWN
B
O.D.
D
WIDTH
B
INCH
(mm)◊
INCH
(mm)◊
INCH
(mm)◊
FLANGE FLANGE
DIA.
WIDTH
Df
Bf
LAND DIAMETER
(REFERENCE)
Li
Lo
FILLET
RADIUS
r
BALL
COMPLEMENT
NO.
Z
SIZE
Db
LOAD RATINGS**
LB.
DYN.
C
STATIC
Co
BRG.
WT.
GMS. ▼
665,)
665,)
665,)
665,)
665,)
+
+
+
+
+
.0400
.0469
.0550
.0781
.0937
1.016
.1250
.1562
.1875
.2500
.1875
6.350
.0469
.0625
.0781
.0937
.0625
665,)
665,)
665,)
665,)
665,)
5
5
5
5
+
+
+
.0937
.0937
.1250
.1250
.1250
.1875
.3125
.2500
.2500
.3125
6.350
6.350
.0625
.1094
.0937
.0937
.1094
665,)
665)
665,)
665,)
665,)
5
5
5
+
+
+
+
.1250
.1250
.1562
.1562
.1875
.3750
.3750
.3125
.3125
.3125
.1094
.1562
.1094
.1094
.1094
665,)
665,)
665)
665,)
665,)
5
5
5
5
+
+
+
+
.1875
.1875
.1875
.2500
.2500
6.350
6.350
.3125
.3750
.5000
.3750
.5000
.1094
.1250
.1562
.1250
.1250
665)
665,)
665,)
665,)
5
5
5
5
+
.2500
.3125
.3750
.5000
6.350
.6250
.5000
.8750
1.1250
22.225
.1960
.1562
.2812
.2500
Notes:
* “R”
Load ratings are based on ABMA Standard #12.
**
17
66844_Text.indd 19
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11/16/12 9:45 AM
Radial, Shielded, Unflanged
r
r
r
Shielded
Ribbon Cage
CAGE
TYPE
Shielded
Crown Cage
RIBBON CROWN
WIDTH B
O.D.
D
INCH
(mm) ◊
INCH
1 SHIELD
(mm) ◊
d Li D
Lo
B
BORE
d
*
BASIC P/N
r
d Li D
Lo
2 SHIELDS
INCH
(mm) ◊
INCH
(mm) ◊
LAND DIAMETER
(REFERENCE)
Li
Lo
FILLET
RADIUS
r
BALL
COMPLEMENT
NO.
Z
SIZE
Db
B
LOAD RATINGS**
LB.
DYN.
C
STATIC
Co
BRG.
WT.
GMS. ▼
665,==
665,==
665,==
665,==
665,==
5
+
+
+
+
.0469
.0550
.0781
.0937
.0937
.1562
.1875
.2500
.1875
.1875
6.350
.0937
.0937
.1094
.0937
.0937
.0937
.1094
.1406
.0937
.0937
665,==
665,==
665,==
665,==
665,==
5
5
5
5
+
+
+
+
.0937
.1250
.1250
.1250
.1250
.3125
.2500
.2500
.3125
.3750
6.350
6.350
.1094
.0937
.0937
.1094
.1094
.1406
.1094
.1094
.1406
.1406
665==
665==$
665,==
665,==
665,==
5
5
5
5
+
+
+
.1250
.1250
.1250
.1562
.1562
.3750 .1562
.5000 .1719
.7500 .1250
.3125 .1094
.3125 .1094
.1562
.1719
.1250
.1250
.1250
665,==
665,==
665,==
665==
665,==
5
5
5
+
+
+
+
.1875
.1875
.1875
.1875
.2500
6.350
.3125 .1094
.3125 .1094
.3750 .1250
.5000 .1960
.3750 .1250
.1250
.1250
.1250
.1960
.1250
665,==
665==
665,==
665,==
665,==
5
5
5
5
5
+
+
.2500
.2500
.2500
.3125
.3750
6.350
6.350
6.350
.5000
.6250
.7500
.5000
.6250
.1875
.1960
.2812
.1562
.1562
665,==
665,==
665,==
665,==
665,==♦
665,==♦
5
5
5
5
.3750
.5000
.5000
.6250
.7500
.8750
22.225 .2812 .2812 22.225 .2812 .2812 .3125 .3125 .3438 .3438 .4375 11.112 .4375 .5000 .5000 .8750
.8750
1.1250
1.3750
1.6250
22.225 1.8750
Notes:
5. For single shield eliminate one “Z” from the
basic part number.
www.nhbb.com
66844_Text.indd 20
.1250
.1960
.2812
.1562
.1562
* “R”
**
18
11/16/12 9:45 AM
r
r
r
r
D Li d
Lo Df
Shielded
Ribbon Cage
D Li d
Shielded
Crown Cage
Bf
Bf
B
CAGE
TYPE
BORE
d
*
BASIC P/N
RIBBON CROWN
Lo Df
B
WIDTH B
1 or 2 SHIELDS
O.D.
D
INCH
(mm)◊
INCH
(mm)◊
INCH
FLANGE FLANGE
DIA.
WIDTH
(mm)◊
Df
Bf
LAND DIAMETER
(REFERENCE)
Li
Lo
FILLET
RADIUS
r
BALL
COMPLEMENT
NO.
Z
LOAD RATINGS**
LB.
SIZE
Db
DYN.
C
STATIC
Co
BRG.
WT.
GMS. ▼
665,)==
665,)==
665,)==
665,)==
665,)==
5
+
+
+
+
.0469
.0550
.0781
.0937
.0937
.1562
.1875
.2500
.1875
.1875
6.350
.0937
.1094
.1406
.0937
.0937
665,)==
665,)==
665,)==
665,)==
665,)==
5
5
5
5
+
+
+
+
.0937
.1250
.1250
.1250
.1250
.3125
.2500
.2500
.3125
.3750
6.350
6.350
.1406
.1094
.1094
.1406
.1406
665)==
665,)==
665,)==
665,)==
665,)==
5
5
5
+
+
+
.1250
.1562
.1562
.1875
.1875
.3750
.3125
.3125
.3125
.3125
.1562
.1250
.1250
.1250
.1250
665,)==
665)==
665,)==
665,)==
665)==
5
5
5
5
+
+
+
+
+
.1875
.1875
.2500
.2500
.2500
6.350
6.350
6.350
.3750 .5000 .3750 .5000 .6250 .1250
.1960
.1250
.1875
.1960
665,)==
665,)==
665,)==
5
5
5
.3125 .5000 .1562 .3750 .8750 22.225 .2812 .5000 1.1250 .3125 Notes:
basic part number.
* “R”
**
19
66844_Text.indd 21
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11/16/12 9:45 AM
Full Ball Complement, Radial, Open, Unflanged and Flanged
r
r
Lo
Unflanged
Flanged
B
BORE
d
BASIC P/N †
d Li D
O.D.
D
WIDTH
B
INCH
(mm)◊
FLANGE
DIA.
Df
6.000
6.350
.0625
.0781
.0937
.0937
.0625
ŏ
ŏ
.3125
.2500
.3125
.3750
.3750
6.350
.1094
.0937
.1094
.1094
.1562
6.350
.3125
.3125
.3750
.5000
.3750
.1094
.1094
.1250
.1562
.1250
6.350
6.350
6.350
.5000
.6250
.7500
.5000
.8750
.8750
22.225
22.225
.1250
.1960
.2188
.1562
.2188
.2188
INCH
(mm)◊
INCH
665,)
665,)
665,6')
665,)
665,)
.0469
.0550
.0781
.0781
.0937
.1562
.1875
.2362
.2500
.1875
665,6')
665,)
665,)
665,)
665)
.0937
.1250
.1250
.1250
.1250
665,)
665,)
665,)
665)
665,)
.1562
.1875
.1875
.1875
.2500
665,)
665)
665,)
665,)
665,)
665,)
.2500
.2500
.2500
.3125
.3750
.5000
(mm)◊
Notes:
www.nhbb.com
66844_Text.indd 22
FLANGE
WIDTH
Bf
LAND DIAMETER
(REFERENCE)
BALL
COMPLEMENT
LOAD RATINGS**
LB.
Li
Lo
FILLET
RADIUS
r
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
NO.
Z
SIZE
Db
DYN.
C
STATIC
Co
† For flanged bearings substitute prefix
"SSRIF-" or "SSRF-."
**
20
11/16/12 9:45 AM
Full Ball Complement, Radial, Shielded, Unflanged and Flanged
r
r
r
Lo
r
D Li d
d Li D
Unflanged
Shielded
Lo D f
Flanged
Shielded
B
Bf
B
BORE
d
O.D.
D
WIDTH
B
INCH
(mm)◊
INCH
(mm)◊
INCH
(mm)◊
FLANGE
DIA.
Df
665,==)
665,==)
665,==)
665,==)
665,==)
.0469
.0550
.0781
.0937
.0937
.1562
.1875
.2500
.1875
.3125
6.350
.0937
.1094
.1406
.0937
.1406
665,==)
665,==)
665,==)
665==)
665,==)
.1250
.1250
.1250
.1250
.1562
.2500
.3125
.3750
.3750
.3125
6.350
.1094
.1406
.1406
.1562
.1250
665,==)
665,==)
665==)
665,==)
665,==)
.1875
.1875
.1875
.2500
.2500
6.350
6.350
.3125
.3750
.5000
.3750
.5000
.1250
.1250
.1960
.1250
.1875
665==)
665,==)
665,==)
665,==)
665,==)
.2500
.2500
.3125
.3750
.5000
6.350
6.350
.6250
.7500
.5000
.8750
.8750
22.225
22.225
.1960
.2812
.1562
.2812
.2812
BASIC P/N †
Notes:
basic part number.
LAND DIAMETER
(REFERENCE)
BALL
COMPLEMENT
LOAD RATINGS**
LB.
NO.
Z
SIZE
Db
DYN.
C
Li
Lo
FILLET
RADIUS
r
ŏ
ŏ
ŏ
ŏ
STATIC
Co
**
21
66844_Text.indd 23
FLANGE
WIDTH
Bf
www.nhbb.com
11/16/12 9:45 AM
Extended Inner Ring, Radial, Open, Unflanged and Flanged
r
r
r
r
Unflanged
Ribbon Cage
BASIC P/N †
INNER WIDTH
Bi
OUTER WIDTH
Bo
FLANGE FLANGE
DIA.
WIDTH
(mm)◊
Df
Bf
LOAD RATINGS**
LB.
NO.
Z
DYN.
C
STATIC
Co
Lo
(mm)◊
INCH
(mm)◊
INCH
(mm)◊
INCH
665,((
665,((
665,((
665,((
665,((
+
+
+
+
+
.0400
.0469
.0550
.0781
.0937
1.016
.1250
.1562
.1875
.2500
.1875
6.350
.0781
.0937
.1094
.1250
.0937
.0469
.0625
.0781
.0937
.0625
665,((
665,((
665,((
665,((
665,((
5
5+
+
5
5+
.0937
.0937
.1250
.1250
.1250
.1875
.3125
.2500
.2500
.3125
6.350
6.350
.0937
.1406
.1250
.1250
.1406
.0625
.1094
.0937
.0937
.1094
665,((
665((
665,((
665,((
665,((
5+
5+
+
5
+
.1250
.1250
.1562
.1562
.1875
.3750
.3750
.3125
.3125
.3125
.1406
.1875
.1406
.1406
.1406
.1094
.1562
.1094
.1094
.1094
665,((
665,((
665,((
665,((
665,((
5
5+
+
5+
5
.1875
.1875
.2500
.2500
.3125
6.350
6.350
.3125 .1406
.3750 .1562
.3750 .1562
.5000 .1562
.5000 .1875
.1094
.1250
.1250
.1250
.1562
66844_Text.indd 24
BALL
COMPLEMENT
Li
INCH
www.nhbb.com
LAND DIAMETER
(REFERENCE)
FILLET
RADIUS
r
*
Bf
Bo
Bi
O.D.
D
Notes:
Lo Df
Flanged
Ribbon Cage
Bo
Bi
BORE
d
CAGE
TYPE
D Li d
d Li D
Lo
SIZE
Db
“R” Ribbon or “H” Crown cages are available
*
**
22
11/16/12 9:45 AM
Extended Inner Ring, Radial, Shielded, Unflanged and Flanged
r
r
r
Lo
Unflanged
Shielded
Ribbon Cage
BASIC P/N †
CAGE
TYPE
r
d Li D
D Li d
Flanged
Shielded
Ribbon Cage
Bo
Bi
BORE
d
O.D.
D
INNER WIDTH
Bi
OUTER WIDTH
Bo
FLANGE FLANGE
DIA.
WIDTH
(mm)◊
Df
Bf
(mm)◊
INCH
(mm)◊
INCH
+
+
+
+
5
.0469
.0550
.0781
.0937
.0937
.1562
.1875
.2500
.1875
.1875
6.350
.1250
.1406
.1719
.1250
.1250
.0937
.1094
.1406
.0937
.0937
5+
+
5
5+
5+
.0937
.1250
.1250
.1250
.1250
.3125
.2500
.2500
.3125
.3750
6.350
6.350
.1719
.1406
.1406
.1719
.1719
.1406
.1094
.1094
.1406
.1406
665==((
5+ .1250 .3750 665,==(( + .1562 .3125 665,==(( 5 .1562 .3125 665,==(( + .1875 .3125 665,==(( 5 .1875 .3125 .1875
.1562
.1562
.1562
.1562
.1562
.1250
.1250
.1250
.1250
665,==((
665==((
665,==((
665,==((
665==((
665,==((
.1562
.2272
.1562
.2188
.2260
.1875
.1250
.1960
.1250
.1875
.1960
.1562
6.350
6.350
6.350
.3750
.5000
.3750
.5000
.6250
.5000
Notes:
basic part number.
NO.
Z
SIZE
Db
DYN.
C
STATIC
Co
*
**
23
66844_Text.indd 25
LOAD RATINGS**
LB.
Lo
INCH
.1875
.1875
.2500
.2500
.2500
.3125
BALL
COMPLEMENT
Li
(mm)◊
5+
5+
+
5+
5+
5
LAND DIAMETER
(REFERENCE)
FILLET
RADIUS
r
INCH
665,==((
665,==((
665,==((
665,==((
665,==((
Bf
Bo
Bi
*
665,==((
665,==((
665,==((
665,==((
665,==((
Lo Df
www.nhbb.com
11/16/12 9:45 AM
Modified Dimension, Radial, Open, Unflanged and Flanged
r
r
r
r
Lo
D Li d
d Li D
Unflanged
Ribbon Cage
Lo Df
Flanged
Crown Cage
B
BASIC P/N
BORE
d
CAGE
TYPE
*
Bf
B
O.D.
D
INCH
(mm)◊
INCH
665,)▲
H
665,)6'▲
5
665,)6'▲
5
665,10&
.&0
665,$
+
.0400
.0781
.0781
.0925
.0937
1.016
2.350
.1250
.1875
.2500
.1875
.3125
665,$
665,$1
665,$1
665,$
665,1
5
+
5
+
+
.0937
.0937
.0937
.0937
.0947
665,1
665,
665,<
665,):▲ 665,)<&9
5
5+
+
5+
5
.0947
.1250
.1250
.1250
.1250
665,$
665,)6'▲
665,)$
665,$
665,$
+
H
5+
+
5+
665,)$▲
665,)$▲ 665;//:
665,<
665,);▲
665,<
665,)6'▲
WIDTH
B
LAND DIAMETER
(REFERENCE)
BALL
COMPLEMENT
LOAD RATINGS**
LB.
NO.
Z
SIZE
Db
DYN.
C
Li
Lo
FILLET
RADIUS
r
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
.0650
.1094
.1094
.1094
.1094
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
.1094
.1094
.3125
.1094
.1250
ŏ
ŏ
ŏ
ŏ
22.225
.1250
.2188
ŏ
ŏ
(mm)◊
FLANGE FLANGE
DIA.
WIDTH
Df
Bf
INCH
(mm)◊
6.350
.0469
.0625
.0625
.0625
.0625
ŏ
ŏ
.3125
.4250
.4250
.4500
.2500
6.350
.0625
.0937
.0937
.1094
.0937
.2500
.2188
.2500
.3125
.3125
6.350
6.350
.0937
.0937
.0625
.1094
.0937
.1250
.1250
.1250
.1250
.1250
.3750
.3750
.4100
.4500
.5000
H
5
5
+
5
.1562
.1562
.1875
.2500
.2500
6.350
6.350
.4100
.4100
.5000
.3750
.5000
5
5
.3750
.3750
.6250
.8750
STATIC
Co
Notes:
www.nhbb.com
66844_Text.indd 26
machined cage availability unless already
noted.
▲ Available only as flanged type.
24
11/16/12 9:45 AM
Modified Dimension, Radial, Shielded, Unflanged and Flanged
r
r d Li D
Lo
Unflanged
Shielded
Ribbon Cage
r
D Li d r
Lo Df
Flanged
Shielded
Crown Cage
B
Bf
B
BORE
d
WIDTH B
O.D.
D
BALL
LOAD RATINGS**
LAND DIAMETER
FILLET COMPLEMENT
LB.
(REFERENCE)
RADIUS NO.
SIZE
DYN. STATIC
Li
Lo
r
Z
Db
C
Co
BASIC P/N
CAGE
TYPE
*
INCH
(mm)◊
INCH
665,==$
665,)==6'▲
665,==<
665,=1
665,=1
+
5
+
+
5
.0469
.0781
.0781
.0800
.0902
2.032
.1875
.2500
.2500
.2500
.3125
ŏ
ŏ
.0937 6.350
—
—
.0937 6.350
—
—
.1094 6.350 .1094 ŏ
ŏ
.1094 ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
665,==10& .&0 .0932 .1875
665,=1
+
.0937 .2500
665,==1
+
.0937 .2500
665,=1
5
.0937 .2500
665,==1
5
.0937 .2500
ŏ
ŏ
.0937 6.350 .0937 ŏ
ŏ
6.350
—
—
.1094 6.350 .0937 ŏ
ŏ
6.350
—
—
.1094 ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
—
.0937 ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
6.350
—
—
.0937 6.350 .1094 ŏ
ŏ
6.350 .1094 ŏ
ŏ
ŏ
ŏ
.1094 .0937 ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
665,==<1
665,=6'
665,=$
665,=$
665,=$1
665,==<
665,=:
665,=:
665,==<
665,=$
665,==$
665,==<
665,)=6'▲ 665,=$
665,=$
665,=$
665,=$
665,==$
665,=$
665,==$
665,=$
665,=$
665,==$
665,==$
665==$
1 SHIELD
(mm)◊
INCH
(mm)◊
FLANGE
DIA.
(mm)◊
Df
2 SHIELDS
INCH
FLANGE
WIDTH
Bf
5
5
5
5
5+
.0937
.0937
.0937
.0937
.0937
.2500 6.350
—
.2750 .0625
.2883 .0625
.4100 .1094
.4100 .1094
5
+
5
5
5
.1250
.1250
.1250
.1250
.1250
.2500
.2500
.2500
.3125
.3750
5
5+
5
+
5
.1250
.1250
.1250
.1250
.1250
.3750 ŏ
ŏ
.0937 .3750 ŏ
ŏ
.1094 .3750 .1406 ŏ
ŏ
.4100 .0937 ŏ
ŏ
.4100 .0937 ŏ
ŏ
5
+
+
5
5
.1250
.1250
.1250
.1250
.1250
.4100
.4250
.4250
.4250
.4250
.1094 ŏ
ŏ
.0937 ŏ
ŏ
ŏ
ŏ
.1094 .0937 ŏ
ŏ
ŏ
ŏ
.1094 ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
5+
5
5
5
5+
.1250
.1250
.1250
.1250
.1250
.4250
.4375
.4375
.5000
.5000
.1094 ŏ
ŏ
11.113 .0937 ŏ
ŏ
11.113
—
—
.0937 ŏ
ŏ
.1094 ŏ
ŏ
.1562 ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
Notes:
machined cage availability unless already
noted.
25
66844_Text.indd 27
www.nhbb.com
11/16/12 9:45 AM
Modified Dimension, Radial, Shielded, Unflanged and Flanged (continued)
r
r d Li D
Lo
Unflanged
Shielded
Ribbon Cage
r
D Li d r
Lo Df
Flanged
Shielded
Crown Cage
B
Bf
B
BASIC P/N
CAGE
TYPE
BORE
d
WIDTH B
O.D.
D
1 SHIELD
*
INCH
(mm)◊
INCH
665,=6'
665,)=6'▲
665,==6'
665,==6'
665==6'
5+
H
5
+
+
.1250
.1250
.1250
.1250
.1562
.5000
.5000
.5769
.7500
.3750
.1250
.1250
ŏ
ŏ
ŏ
665,==6'
665==6'
665,;=
665,;==<
665,);==▲ 5
5+
5
5
5
.1567
.1567
.1875
.1875
.1875
.3750
.3750
.3125
.3125
.3125
ŏ
ŏ
.1094
ŏ
ŏ
665,;==$
665,;=<
665,;=<
665,=$
665,=$
5
+
5
+
5
.1875
.1875
.1875
.1875
.1875
.3750 ŏ
.3750 .1094
.3750 .1094
.4100 .1094
.4100 .1094
665,==$
665,=$
665,==$
665,;==$
665,=$
+
5
5
5
5
.1875
.1875
.1875
.1875
.1875
.4250
.4250
.4250
.4375
.4600
665,=$
665,==$
665,==$
665,==$
665,)==$
5
+
5
5+
5+
.1875
.1875
.1875
.1875
.1875
665==<
665,)=6'▲
665==$
665==$
665==$
5
H
5+
5+
5+
.1875
.1875
.1875
.1875
.1875
665==$
665==$
665==:
665,==$
665,=$
5+
5
5+
+
+
.1875
.1875
.1875
.2500
.2500
(mm)◊
INCH
(mm)◊
FLANGE
2 SHIELDS
DIA.
INCH (mm)◊
Df
FLANGE
WIDTH
Bf
BALL
LOAD RATINGS**
LAND DIAMETER
FILLET COMPLEMENT
LB.
(REFERENCE)
RADIUS NO. SIZE
DYN. STATIC
Li
Lo
r
Z
Db
C
Co
ŏ
ŏ
ŏ
ŏ
ŏ .1250 ŏ .1250 ŏ .1562 ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ .1094 ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
.1094
ŏ
11.113
—
.1094
ŏ .1250 ŏ
ŏ
ŏ .1250 —
.1094 ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
.5000
.5000
.5000
.5000
.5000
.1094
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
.1250
.1250
.1562
.1562
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
.5000
.5000
.6250
.7435
.7500
ŏ
.1250
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
.1562
ŏ
.1960
.1960
.1960
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
6.350
6.350
.7717
.8750
.5000
.4375
.5000
ŏ
22.225
—
ŏ
11.113
—
.1094
ŏ
—
ŏ
—
.1960
.1960
.3125
.1250
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
.1250
.1562
ŏ
.1094
.1250
ŏ
Notes:
www.nhbb.com
66844_Text.indd 28
26
11/16/12 9:45 AM
Modified Dimension, Radial, Shielded, Unflanged and Flanged (continued)
r
r d Li D
Lo
Unflanged
Shielded
Ribbon Cage
r
D Li d r
Lo Df
Flanged
Shielded
Crown Cage
B
Bf
B
BASIC P/N
CAGE
TYPE
BORE
d
O.D.
D
WIDTH B
1 SHIELD
FLANGE
DIA.
(mm)◊
Df
2 SHIELDS
FLANGE
WIDTH
Bf
BALL
LOAD RATINGS**
LAND DIAMETER
FILLET COMPLEMENT
LB.
(REFERENCE)
RADIUS NO.
SIZE
DYN. STATIC
Li
Lo
r
Z
Db
C
Co
*
INCH
(mm)◊
INCH
(mm)◊
INCH
(mm)◊
INCH
5
5
5+
5
.2500
.2500
.2500
.2500
6.350
6.350
6.350
6.350
.5000
.5000
.7500
.8685
22.060
ŏ
ŏ
ŏ
—
ŏ
ŏ
ŏ
—
.1562
.1562
.1960
.1960
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
665==$
665==6'
665==6'
665==:
5
5
5
5
.2500
.2500
.2500
6.350 1.0415 6.350
.6250 6.350
.7050 7.000 22.000
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
.1960
.3120
.1960
10.312
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
665,==$
665==:
665==:
665,==$
5
5
5
5
.3125
.3750
.6250
8.000 8.000 1.0000
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
.1562
.2812
10.312
12.000
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
665,==6'
665,)==6'
665==$
665==$
22.000
22.000
Notes:
27
66844_Text.indd 29
www.nhbb.com
11/16/12 9:45 AM
www.nhbb.com
66844_Text.indd 30
28
11/16/12 9:45 AM
Custom Specialty
Contents
30
Angular Contact, Full Ball Complement
31
Angular Contact
32
Radial
29
66844_Text.indd 31
www.nhbb.com
11/16/12 9:45 AM
Custom Specialty
Angular Contact, Full Ball Complement (limited speed capability)
r
r
r
Li
Inner Ring
Relieved
d
Outer Ring
Relieved
B
BORE
d
BASIC P/N
r
Lo
Lo D
O.D.
D
LAND DIAMETER
(REFERENCE)
WIDTH
B
INCH
(mm)
INCH
(mm)
INCH
(mm)
Li
Lo
d
Li D
B
FILLET
RADIUS
r
BALL
COMPLEMENT
LOAD RATINGS**
LB.
NO.
Z
SIZE
Db
DYN.
C
STATIC
Co
660'5==)
660(5)
660'5==)
660(56')
.1250
.1250
.1875
.1875
.3750
.3750
.5000
.5000
.1562
.1562
.1960
.1562
660'5==)
660'5,;==)
660'5==6')
660'5==6')
660'5==6')
.2500
.2500
6.000
6.350
6.350
7.000
8.000
.5000
.6250
19.000
22.000
22.000
.2362
.1875
.1960
6.000
7.000
7.000
660'5,==)
660'5==)
660'5,==)
660(5,6')
.3750
.5000
.8750
10.000
22.225
.8750
1.0236
.7500
1.1250
22.225
26.000
.2812
.3150
.1562
.1562
8.000
Notes:
4. Metric/inch conversions are given for reference
only.
www.nhbb.com
66844_Text.indd 32
**Load ratings are based on ABMA Standard #12.
30
11/16/12 9:45 AM
Custom Specialty
Angular Contact
r
r
Lo
Inner Ring
Relieved
Outer Ring
Relieved
BORE
d
INCH
.10
0
0
.1
.1
660(56'
0(5
660(56'
660'5=6'
660(56'
O.D.
D
INCH
(mm)
.1250
.1250
.1250
.1875
2.000
.2362
.2500
.2500
.3750
.5000
.1
.0
.0
.0
.0
.1875
.2500
.2500
6.000
6.350
6.350
8.000
660(5,
660(5,
0(5
0(5
660'5
.0
.0
.9
.0
.9
.3750
.3750
660(5,6'
660(5,6'
660(5,6'
.0
.0
.9
.6250
.7500
.8750
660'50&
'60'5,;
'60'5,=:20&■
660%5
0(56'
LAND DIAMETER
(REFERENCE)
WIDTH
B
(mm)
6
r
Li
Li D
B
CAGE
TYPE
*
BASIC P/N
d
r
Li
d
Lo D
B
BALL
COMPLEMENT
Lo
FILLET
RADIUS
r
NO.
Z
LOAD RATINGS**
LB.
SIZE
Db
DYN.
C
STATIC
Co
INCH
(mm)
6.000
6.350
6.350
.0937
.1094
.1562
.1562
2.301
.5000
.6250
.6250
19.000
22.000
.1562
.2362
.1960
.1960
6.000
7.000
10.000
10.000
12.000
.6250
.8750
1.0236
22.225
22.000
26.000
24.000
.1562
.2188
.2362
.3150
.2362
6.000
8.000
6.000
22.225
.8750
1.0000
1.1250
22.225
.1562
.1562
.1562
Notes:
only.
consult with factory for machined
* Please
cage options.
■ Also available in flanged version. Please
consult with factory.
**
CUSTOM SPECIALTY BEARINGS have been developed for applications
that require precise running accuracy and high speed capability, with the
option of autoclavability. The machined Torlon® cage, designated as retainer
option (M4, M5), is proven to withstand repeated autoclaving. This machined
Torlon® retainer also has the option of a patented silver coating, which
extends operational life in marginally lubricated applications and provides
an added benefit with the antimicrobial properties of the silver coating.
500,000 rpm). The design of these bearings incorporates the advantage of
ultra-precision tolerances, a geometrically balanced design, super finished
raceways, improved ball grade and a variety of retainer options.
The standard cage options are noted by chassis size, although there are
numerous other materials available that can be used to optimize performance specific to your unique application. All of the sizes listed represent
current production sizes, although almost any part can be designed to
take advantage of the operating characteristics of our Custom Specialty
Bearings.
These bearings are widely used in critical dental/medical applications,
although they are ideally suited for any high speed application (up to
31
66844_Text.indd 33
www.nhbb.com
11/16/12 9:45 AM
Custom Specialty
Radial
r
r
r
Lo
Open
Machined
Crown Cage
d
Shielded
Machined
Crown Cage
B
BORE
d
O.D.
D
CAGE
TYPE
*
INCH
(mm)
665,10&
66/6'%
665,==6'0&
665,0&■ 665,;==0&■
0
0
0
.&0
.&06&
.0925
.0927
.0937
.0937
.0937
2.350
2.355
.1875
.1969
.1250
.1875
.1875
66/0&
66/;==0&
'65,;0&■ ◗ 665,;:20&
'65,;=0&◗
0
0
.&0
0
.&0
.1250
.1250
.1250
3.000
3.000
665,;=:2■
665,;==0&■ 665,0&■
665,;=:20&
665,;==0&■ .&0
.&0
KC
.&0
.&06&
.1250
.1250
.1250
.1250
.1250
665,;==0&
665;==0&■ 665==$0&
665,==0&
66/0&
0
.%0
0
.&0
.&0
66/0&
66/==0&
665,:20&■
665,==0&■ 665,;0&■
BASIC P/N
665,;==0&■ 665;==0&■ 66/==0&
665,==0&
665,==0&■ 665==0&■ 665;==0&■ 66/;==0&
66/
66/==0&
66/==:0&
r
Lo
Li D
LAND DIAMETER
(REFERENCE)
WIDTH
B
INCH
(mm)
Li
Lo
FILLET
RADIUS
r
5.000
.0625
.0591
.1406
.0625
.0937
ŏ
.2500
.2500
.2500
7.000
7.000
6.350
6.350
6.350
.0937
.1094
.0937
2.000
3.000
.2500
.2500
.3125
.3125
.3125
6.350
6.350
.1094
.1094
.1094
.1406
.1406
.1250
.1250
.1250
.1562
4.000
.3750
.3750
.5000
.3125
7.000
.1406
.1562
.1719
.1250
2.000
0
0
M5
.&0
M5
.1875
.1875
.1875
4.000
4.000
.3125
.3125
.3750
9.000
9.000
.1250
.1250
.1250
.%.&0
.&0
0
.&06&
.&0
.1875
.1875
.2500
.2500
5.000
6.350
6.350
.3750
.5000
.3750
.5000
11.000
.&0
.&0
0
.&
0
.&
.2500
.2500
6.350
6.350
7.000
8.000
8.000
8.000
.6250
.6250
13.000
16.000
16.000
16.000
INCH
(mm)
Li D
B
BALL
COMPLEMENT
NO.
Z
d
LOAD RATINGS**
LB.
SIZE
Db
DYN.
C
STATIC
Co
2.500
4.000
.1250
.1960
.1250
.1875
5.000
.1960
.1960
.2362
4.000
4.000
5.000
6.000
Notes:
only.
www.nhbb.com
66844_Text.indd 34
* Please
cage options.
■ Also available in flanged version. Please consult with factory.
◗ D=Ring material made of 400 series martensitic
stainless steel.
**
32
11/16/12 9:45 AM
Custom Specialty
Radial
r
r
r
Lo
Open
Machined
Crown Cage
BASIC P/N
CAGE
TYPE
*
d
Shielded
Machined
Crown Cage
B
BORE
d
r
Lo
Li D
O.D.
D
LAND DIAMETER
(REFERENCE)
WIDTH
B
INCH
(mm)
INCH
(mm)
INCH
(mm)
Li
Lo
FILLET
RADIUS
r
d
Li D
B
BALL
COMPLEMENT
LOAD RATINGS**
LB.
NO.
Z
SIZE
Db
DYN.
C
STATIC
Co
665,0&■
665,==6'0&
66/==:0&
6650&
665==:0&
M5
.&0
.&0
.&0
.&0
.3125
.3125
8.000
8.000
8.000
.5000
.5000
16.000
22.000
22.000
.1562
.1562
.2362
6.000
7.000
10.312
665,;==
665,;==6'
665,==:0&
665,0&■ 665,==0&■ .&0
.&0
.&
.&0
.&0
.3750
.3750
.3750
.3750
.3750
.6250
.6250
.6250
.8750
.8750
22.225
22.225
.1562
.1550
.1960
.2188
.2812
665,;==0&
665,==:0&
665,;==
665,==:0&
665,;==
665,==:
.&0
.&
.&
.&
.&
.&
.5000
.5000
.6250
.6250
.7500
.7500
.7500
.7500
.8750
.8750
1.0000
1.0000
22.225
22.225
.1562
.1960
.1562
.1960
.1562
.1960
Notes:
only.
* Please
cage options.
■ Also available in flanged version. Please
consult with factory.
**
CUSTOM SPECIALTY BEARINGS have been developed for applications
that require precise running accuracy and high speed capability, with the
option of autoclavability. The machined Torlon® cage, designated as retainer
option (M4, M5), is proven to withstand repeated autoclaving. This machined
Torlon® retainer also has the option of a patented silver coating, which
extends operational life in marginally lubricated applications and provides
an added benefit with the antimicrobial properties of the silver coating.
500,000 rpm). The design of these bearings incorporates the advantage of
ultra-precision tolerances, a geometrically balanced design, super finished
raceways, improved ball grade and a variety of retainer options.
The standard cage options are noted by chassis size, although there are
numerous other materials available that can be used to optimize performance specific to your unique application. All of the sizes listed represent
current production sizes, although almost any part can be designed to
take advantage of the operating characteristics of our Custom Specialty
Bearings.
These bearings are widely used in critical dental/medical applications,
although they are ideally suited for any high speed application (up to
33
66844_Text.indd 35
www.nhbb.com
11/16/12 9:45 AM
www.nhbb.com
66844_Text.indd 36
34
11/16/12 9:45 AM
Contents
36
37
38
Thinex
35
66844_Text.indd 37
www.nhbb.com
11/16/12 9:45 AM
r
r
r
Lo
r
d
Li D
Open
Phenolic
Crown Cage
BASIC P/N
Li D
Shielded
Phenolic
Crown Cage
B
B
BORE
d
O.D.
D
WIDTH
B
LAND DIAMETER
(REFERENCE)
INCH
(mm)◊
INCH
(mm)◊
INCH
(mm)◊
Li
Lo
FILLET
RADIUS
r
CAGE
TYPE
d
Lo
BALL
COMPLEMENT
LOAD RATINGS**
LB.
NO.
Z
SIZE
Db
DYN.
C
STATIC
Co
BRG.
WT.
GMS. ▼
665,
665,
665,
665,
5
.&
5.&
5.&
.6250
.6250
.7500
.8750
22.225
1.0625
1.0625
1.1875
1.3125
30.162
.2500
.2500
.2500
.2500
665,
665,6'
665,
665,6'
5.&
.&
5.&
.&
1.0625
1.0625
1.3125
1.3125
1.5000
1.5000
1.7500
1.7500
.2500
.2500
.2500
.2500
5
.&
.&
.&
1.5625
1.5625
1.8125
2.0625
2.0000
2.0000
2.2500
2.6250
.2500
.2500
.2500
.2500
665,
665,
665,
665,
Notes:
3. See page 64 for ABEC 5T and 7T tolerances.
5. Angular contact configurations available
(SSMDRI-, SSMERI-). Please consult with factory.
6. Extended inner rings (EE) also available as
a production standard. See next page.
www.nhbb.com
66844_Text.indd 38
**
36
11/16/12 9:45 AM
r
r
r
r
d Li
Lo
D
Lo
B
BASIC P/N
Li D
Shielded
Phenolic
Crown Cage
Open
Phenolic
Crown Cage
BORE
d
CAGE
TYPE
d
B
O.D.
D
INNER WIDTH
Bi
OUTER WIDTH
Bo
LAND DIAMETER
(REFERENCE)
BALL
FILLET COMPLEMENT
RADIUS
NO.
SIZE
r
Z
Db
LOAD RATINGS**
LB.
DYN.
C
STATIC
Co
BRG.
WT.
GMS. ▼
INCH
(mm)◊
INCH
(mm)◊
INCH
(mm)◊
INCH
(mm)◊
Li
Lo
5
.&
5.&
5.&
.6250
.6250
.7500
.8750
22.225
1.0625
1.0625
1.1875
1.3125
30.162
.2812
.2812
.2812
.2812
.2500
.2500
.2500
.2500
665,((
5.&
665,6'(( .&
665,((
5.&
665,6'(( .&
1.0625
1.0625
1.3125
1.3125
1.5000
1.5000
1.7500
1.7500
.2812
.2812
.2812
.2812
.2500
.2500
.2500
.2500
665,((
665,((
665,((
665,((
1.5625
1.5625
1.8125
2.0625
2.0000
2.0000
2.2500
2.6250
.2812
.2812
.2812
.2812
.2500
.2500
.2500
.2500
665,((
665,((
665,((
665,((
5
.&
.&
.&
Notes:
(SSMDRI-, SSMERI-), please consult with factory.
**
37
66844_Text.indd 39
www.nhbb.com
11/16/12 9:45 AM
Thinex
r
r
r
Lo
r
d
Li D
Open
Phenolic
Crown Cage
BASIC P/N
665,
*5
Li D
Shielded
Phenolic
Crown Cage
B
CAGE
TYPE
d
Lo
BORE
d
B
WIDTH B
O.D.
D
OPEN
INCH
(mm)◊ INCH
(mm)◊ INCH
SHIELDED
(mm)◊
LAND DIAMETER
(REFERENCE)
INCH (mm)◊ Li
FILLET
RADIUS
r
Lo
BALL
COMPLEMENT
LOAD RATINGS**
LB.
NO.
SIZE
Z
Db
DYN.
C
STATIC
C
o
BRG.
WT.
GMS.▼
665,
665,
665,
665,6'
5
5
5
.&
.3750 .5000 .6250 .6250 .6250
.7500
.8750
.8750
22.225
22.225
.1562
.1562
.1562
.1562
.1562 .1562 .1562 ŏ
ŏ
665,
665,6'
665,6'
665,6'
5
.&
+
.&
.7500
.7500
.8750
.8750
22.225
22.225
1.0000
1.0000
1.1250
1.1250
.1562
.1562
.1562
.1562
.1562 ŏ
ŏ
.1562 ŏ
ŏ
1.0625 1.3125 1.2500 1.5000 .1562
.1562
.1960 .1960 665,♦†
665,♦†
Notes:
(SSMDRI-, SSMERI-). Please consult with factory.
6. Extended inner rings (EE) also available as
a production standard.
www.nhbb.com
66844_Text.indd 40
“R” Ribbon cage is available as indicated.
*The
Please consult with factory for machined cage
availability.
**
† Single or double shielded or sealed configuration with specific internal design may be available in the open width.
38
11/16/12 9:45 AM
Metric Series
Contents
40
Middle Size Metric Series – Radial, Unflanged
41
Miniature Metric L Series – Radial, Open, Unflanged and Flanged
42
Miniature Metric L Series – Radial, Shielded, Unflanged and Flanged
43
Miniature Metric R Series – Radial, Open, Unflanged and Flanged
44
Miniature Metric R Series – Radial, Shielded, Unflanged and Flanged
39
66844_Text.indd 41
www.nhbb.com
11/16/12 9:45 AM
Middle Size Metric Series
Radial, Unflanged
r
r
r
r
Lo
Open
Ribbon Cage
BASIC P/N
d Li D
Shielded
Ribbon Cage
B
BORE
d
CAGE TYPE
d Li D
Lo
O.D.
D
WIDTH
B
LAND DIAMETER
(REFERENCE)
FILLET
RADIUS
r
B
BALL
COMPLEMENT
LOAD RATINGS **
LB.
SIZE
Db
DYN.
C
STATIC
Co
*
mm
(INCH)◊
mm
(INCH)◊
mm
(INCH)◊
Li
mm
Lo
mm
mm
(INCH)
NO.
Z
5'.&
5'
.(
5'
.&
10.0
10.0
10.0
10.0
10.0
22.0
26.0
26.0
30.0
30.0
1.0236
1.0236
6.0
8.0
8.0
9.0
9.0
.30
.30
.30
.61
.61
5
.&.(
5'
5'
.&
12.0
12.0
12.0
12.0
15.0
24.0
24.0
28.0
32.0
24.0
6.0
6.0
8.0
10.0
5.0
.30
.30
.30
.61
.30
5'
5'
5'
5'
5'.&.(
15.0
15.0
15.0
17.0
17.0
28.0
32.0
35.0
30.0
35.0
7.0
9.0
11.0
7.0
10.0
.30
.30
.61
.30
.30
665
665
665
665
✩665
5'
5'
5'
5'
.&
17.0
20.0
20.0
20.0
25.0
40.0
37.0
42.0
47.0
37.0
1.6535
12.0
9.0
12.0
14.0
7.0
.61
.30
.61
1.02
.30
665
665
5'
5'
25.0
25.0
42.0
47.0
1.6535
9.0
12.0
.30
.61
✩ 665
✩ 665
665;
✩ 665
✩ 665;
✩ 665
665;
✩ 665
665
✩665
✩665
✩665
✩665
665
✩665
✩ Production standard.
Notes:
1. Metric to inch conversion—see page 68.
2. Basic part numbers shown above include code
“SS” for AISI 440C stainless steel. If SAE 52100
chrome alloy steel is desired, delete "SS."
3. Tolerances per ABMA standard #20.
www.nhbb.com
66844_Text.indd 42
5. While we have the capability to produce the
sizes listed, they are not all currently in production. Please consult with factory for minimum
order quantity and quote.
6. Add “Z” for single shield, “ZZ” for two shields, as a
suffix to basic part number.
Please consult with factory for machined
* cage
options.
◊ Inch conversions are given for reference only.
**Load ratings are based on ABMA Standard #9.
40
11/16/12 9:45 AM
Miniature Metric L Series
Radial, Open, Unflanged and Flanged
r
r
r
r
Lo
Unflanged
Ribbon Cage
D Li d
d Li D
Lo Df
Flanged
Ribbon Cage
B
Bf
B
BORE
d
CAGE
TYPE
BASIC P/N †
O.D.
D
WIDTH
B
FLANGE
DIA.
Df
FLANGE
WIDTH
Bf
LAND DIAMETER
(REFERENCE)
FILLET
RADIUS
r
BALL
COMPLEMENT
*
mm
(INCH)◊
mm
(INCH)◊
mm
(INCH)◊
mm
mm
Li
mm
Lo
mm
mm
(INCH)◊
NO.
Z
+
H
+0
1.0
1.0
1.5
1.5
2.0
3.0
3.0
4.0
4.0
5.0
1.0
1.5
1.2
1.2
1.5
.05
.05
.05
.05
.08
PP
PP
66/
✩66/
✩66/
✩66/
66/
0
0
.&0
2.5
3.0
3.0
4.0
4.0
6.0
6.0
7.0
7.0
8.0
.2362
.2362
.3150
1.8
2.0
2.0
2.0
2.0
.08
.08
.10
.08
.10
PP
PP
✩66/
66/
66/
66/
66/
50
4.0
4.0
5.0
5.0
5.0
9.0
10.0
8.0
9.0
10.0
.3150
2.5
3.0
2.0
2.5
3.0
.10
.15
.08
.10
.15
PP
✩66/
✩66/
66/
✩66/
66/
0
+0
.&
5.0
6.0
6.0
6.0
7.0
.2362
.2362
.2362
11.0
10.0
12.0
13.0
11.0
3.0
2.5
3.0
3.5
2.5
.15
.10
.15
.15
.10
PP
PP
66/
✩66/;
66/
66/
✩66/
50
50
+
.&5
7.0
7.0
8.0
8.0
8.0
.3150
.3150
.3150
13.0
14.0
12.0
14.0
16.0
.5512
.5512
3.0
3.5
2.5
3.5
4.0
.15
.15
.10
.15
.20
66/
66/
✩66/
✩66/;
5
.&
9.0
9.0
10.0
10.0
17.0
20.0
19.0
19.0
4.0
5.0
5.0
5.0
ŏ-
ŏ-
ŏ-
ŏ
ŏ
—
12.22
16.50
.20
.30
.30
.30
66/
66/:
✩66/
✩66/):▲
✩66/
SIZE
Db
LOAD RATINGS**
LB.
Dyn.
C
STATIC
Co
Notes:
5. While we have the capability to produce the
sizes listed, they are not all currently in production. Please consult with factory for minimum
order quantity and quote.
*
**
41
66844_Text.indd 43
† For flanged bearing, substitute prefix "SSLF-"
when applicable.
Please consult with factory for cage
availability.
www.nhbb.com
11/16/12 9:45 AM
Miniature Metric L Series
Radial, Shielded, Unflanged and Flanged
r
r
r
r
Unflanged
Shielded
Ribbon Cage
D Li d
d Li D
Lo
Lo Df
Flanged
Shielded
Ribbon Cage
B
Bf
B
BORE
d
CAGE
TYPE
BASIC P/N †
O.D.
D
FLANGE FLANGE
DIA.
WIDTH
Df
Bf
WIDTH
B
LAND DIAMETER
(REFERENCE)
*
mm
(INCH)◊
mm
(INCH)◊
mm
(INCH)◊
mm
mm
Li
mm
66/
66/
66/
✩66/;
✩66/;
+
50
2.0
2.5
3.0
3.0
3.0
5.0
6.0
6.0
7.0
7.0
.2362
.2362
2.3
2.6
2.5
3.0
3.0
ŏ
ŏ
ŏ
ŏ
66/
66/
66/
✩66/):▲
66/;
05
05
+
4.0
4.0
4.0
4.0
4.0
7.0
8.0
9.0
9.0
10.0
.3150
2.5
3.0
4.0
4.0
4.0
66/
66/
66/
✩66/;
✩ 66/
0
5.0
5.0
5.0
5.0
6.0
.2362
8.0
9.0
10.0
11.0
10.0
.3150
2.5
3.0
4.0
5.0
3.0
✩66/;
66/
66/
66/
✩66/;
+0
.&
50
6.0
6.0
6.0
7.0
7.0
.2362
.2362
.2362
10.0
12.0
13.0
11.0
13.0
3.0
4.0
5.0
3.0
4.0
.&05
+
5
.&5
7.0
8.0
8.0
8.0
8.0
.3150
.3150
.3150
.3150
14.0
12.0
14.0
16.0
16.0
.5512
.5512
5
5.&
9.0
9.0
10.0
10.0
17.0
20.0
19.0
19.0
✩66/;
66/
66/
✩66/
✩66/:
66/
66/
✩ 66/
✩ 66/;
FILLET
RADIUS
r
BALL
COMPLEMENT
LOAD RATINGS**
LB.
Lo
mm
mm
(INCH)◊
NO.
Z
SIZE
Db
Dyn.
C
STATIC
Co
.08
.08
.08
.10
.10
PP
PP
PP
PP
PP
.08
.10
.10
.10
.15
ŏ
ŏ
.08
.10
.15
.15
.10
PP
ŏ
ŏ
ŏ
ŏ
.10
.15
.15
.10
.15
PP
PP
5.0
3.5
4.0
5.0
6.0
ŏ
ŏ
ŏ
ŏ
.15
.10
.15
.20
.20
5.0
6.0
7.0
5.0
ŏ
ŏ
ŏ
ŏ
ŏ
ŏ
.20
.30
.30
.30
Notes:
www.nhbb.com
66844_Text.indd 44
5. While we have the capability to produce
the sizes listed, they are not all currently in
production. Please consult with factory for
minimum order quantity and quote.
6. Add “Z” for single shield, “ZZ” for two shields, as
a suffix to basic part number before “Y” or “W”
width variations.
† For flanged bearing, substitute prefix "SSLF-"
when applicable.
availability.
*
**
42
11/16/12 9:45 AM
Miniature Metric R Series
Radial, Open, Unflanged and Flanged
r
r
r
r
Lo
Unflanged
Ribbon Cage
D Li d
d Li D
Lo Df
Flanged
Ribbon Cage
B
Bf
B
CAGE
TYPE
BASIC P/N †
BORE
d
O.D.
D
FLANGE FLANGE
DIA.
WIDTH
Df
Bf
WIDTH
B
Lo
mm
mm
(INCH)◊
NO.
Z
SIZE
Db
.10
.15
.15
.15
.15
.15
.15
.15
.15
.15
4.0
4.0
5.0
5.0
4.0
.15
.20
.20
.30
.20
.5512
5.0
5.0
6.0
5.0
6.0
19.0
19.0
22.0
22.0
26.0 1.0236
6.0
6.0
7.0
7.0
8.0
ŏ
ŏ
ŏ
ŏ
(INCH)◊
mm
(INCH)◊
mm
(INCH)◊
1.2
1.5
1.5
2.0
2.0
4.0
5.0
6.0
6.0
7.0
.2362
.2362
1.8
2.0
2.5
2.3
2.8
.&05
2.5
2.5
3.0
3.0
3.0
7.0
8.0
8.0
9.0
10.0
.3150
.3150
2.5
2.8
3.0
3.0
4.0
✩ 665;
665
665
✩ 665;
✩ 665
5
5
5
4.0
4.0
4.0
4.0
5.0
11.0
12.0
13.0
16.0
13.0
✩
✩
5
5
5.0
5.0
5.0
6.0
6.0
.2362
.2362
14.0
16.0
19.0
15.0
17.0
.&05
5
.&5
.&05
5
6.0
7.0
7.0
8.0
9.0
.2362
.3150
✩
665
665
665
665
665;
665
665;
665
665
665
✩ 665
✩ 665
✩ 665
✩ 665
✩ 665
BALL
COMPLEMENT
Li
mm
mm
665
665
665
665
665
FILLET
RADIUS
r
mm
*
LAND DIAMETER
(REFERENCE)
mm
LOAD RATINGS**
LB.
Dyn.
C
STATIC
Co
PP
PP
PP
PP
.20
.30
.30
.15
.20
PP
.30
.30
.30
.30
.30
Notes:
*
**
43
66844_Text.indd 45
† For flanged bearing, substitute prefix "SSRF-"
when applicable.
availability.
www.nhbb.com
11/16/12 9:45 AM
Miniature Metric R Series
Radial, Shielded, Unflanged and Flanged
r
r
r
Unflanged
Shielded
Ribbon Cage
r
d Li D
Lo
D Li d
Lo Df
Flanged
Shielded
Ribbon Cage
B
Bf
B
CAGE
TYPE
BASIC P/N †
BORE
d
O.D.
D
WIDTH
B
FLANGE FLANGE LAND DIAMETER
DIA.
WIDTH
(REFERENCE)
Df
Bf
Li
Lo
mm
mm
mm
mm
LOAD RATINGS**
LB.
(INCH)◊
NO.
Z
SIZE
Db
.15
.15
.15
.15
.15
PP
PP
.15
.15
.15
.15
.15
ŏ
.15
.20
.30
.20
.20
PP
.30
.20
.20
.30
.30
PP
.15
.20
.30
.30
.30
PP
ŏ
ŏ
.30
.30
.30
mm
(INCH)◊
mm
(INCH)◊
mm
(INCH)◊
665
665
665
✩ 665<
665
+
1.5
1.5
2.0
2.0
2.0
5.0
6.0
6.0
6.0
7.0
.2362
.2362
.2362
2.6
3.0
3.0
2.3
3.5
ŏ
ŏ
665
665
✩ 665;
665<
665
+0
2.5
2.5
3.0
3.0
3.0
7.0
8.0
8.0
9.0
9.0
.3150
.3150
3.5
4.0
4.0
4.0
5.0
✩ 665
665
✩ 665;
665
665
.&05
5
3.0
4.0
4.0
4.0
4.0
10.0
11.0
11.0
12.0
13.0
4.0
4.0
4.0
4.0
5.0
ŏ
✩ 665;
✩ 665
665
✩ 665;
✩ 665
5
5
5
5
4.0
5.0
5.0
5.0
5.0
16.0
13.0
14.0
16.0
19.0
.5512
5.0
4.0
5.0
5.0
6.0
.&05
5
.&5
6.0
6.0
6.0
7.0
7.0
.2362
.2362
.2362
15.0
17.0
19.0
19.0
22.0
5.0
6.0
6.0
6.0
7.0
5
.&05
5
8.0
8.0
9.0
.3150
.3150
19.0 22.0 26.0 1.0236
6.0
7.0
8.0
✩ 665;
✩ 665
✩ 665
BALL
COMPLEMENT
mm
*
665
665
✩ 665
✩ 665
✩ 665
FILLET
RADIUS
r
Dyn.
C
STATIC
Co
Notes:
www.nhbb.com
66844_Text.indd 46
6. Add “Z” for single shield, “ZZ” for two shields, as
a suffix to basic part number before “Y” or “W”
width variations.
† For flanged bearing substitute prefix "SSRF-"
when applicable.
availability.
*
**
44
11/16/12 9:45 AM
Engineering
Contents
The information contained in this section is provided to assist you
with selecting the proper ball bearing product for your application.
Early involvement of NHBB applications engineering is recommended
to assure that the product chosen meets your critical requirements
for performance, life, and cost.
46
47
Materials
49
Cages
52
Seals and Shields
53
55
Lubrication
57
58
61
Mounting and Coding
62
Recommended Fits
63
Tolerances
65
Torque
65
66
Interchange Chart
68
69
45
66844_Text.indd 47
www.nhbb.com
11/16/12 9:45 AM
Engineering
Computer Design and Analysis
NHBB utilizes computerized design capabilities to examine and
analyze complex ball bearing applications. These capabilities
ensure that the ultraprecision ball bearing you select will meet
your specific requirements for performance, life, and cost.
Engineering Test Laboratory
We maintain a fully equipped engineering test laboratory that
enables us to validate the performance characteristics of our ball
bearing designs. The lab contains a full complement of commercially available equipment, as well as specialized equipment
developed by NHBB and precisely tailored for specific test
requirements, such as our patented high speed bearing vibrational analysis system.
Anderonmeter, Dynamic Noise and Vibration Tester
Materials Laboratory
6WDUWLQJ WRUTXH LV D PHDVXUH RI WKH HIIRUW UHTXLUHG WR LQLWLDWH
Our materials laboratory is specifically designed and equipped
EHDULQJ URWDWLRQ XQGHU D WKUXVW ORDG ,W FDQ EH D FULWLFDO
to perform complex chemical, metallurgical, and visual analysis
IDFWRU LQ DSSOLFDWLRQV UHTXLULQJ PXOWLSOH ORZVSHHG VWDUWVWRS
of the many component parts in ball bearings. The lab is also
movements.
used to perform wear and failure studies on customer bearings.
5XQQLQJ WRUTXH LV D PHDVXUH RI WKH HIIRUW UHTXLUHG WR PDLQWDLQ
Metallurgical studies are conducted with a metallograph and
rotation under a certain load after rotation has been initiated.
micro-hardness testers. The metallograph performs micro-struc-
NHBB measures running torque values at standard speeds of
ture photography at magnifications from 25 to 2,000 times.
WRUSPZLWKDSSOLHGWKUXVWORDGVRIRUJUDPV7KH
Micro-hardness testers use diamond indentors under loads from
test is fully monitored with results permanently recorded onto a
1 to 10,000 grams to test material hardness. More in depth stud-
strip chart. This chart may be analyzed for various ball bearing
ies of surface topography and material composition are possible
characteristics, such as surface finish, contamination, brinelling,
ZLWKWKHXVHRIRXURZQVFDQQLQJHOHFWURQPLFURVFRSH6(0
and overall geometry. The test for running torque is time
During laboratory wear studies, ball bearings are disassembled
consuming and primarily used on a sample basis or for perform-
DQG H[DPLQHG XQGHU D ODPLQDU ƃRZ KRRG $OO ƂQGLQJV PD\
ing diagnostic analysis. Both starting and running torque tests
be permanently recorded with a 200X photo-microscope for
PHHW0,/67'UHTXLUHPHQWV
analysis and future reference.
1+%%KDV GHYHORSHG $QGHURQPHWHU œQRLVH UDWLQJVŔ WR DVVXUH
the consistent performance of every bearing we manufacture.
Functional Tests for Ball Bearings
$IWHUDVVHPEO\$QGHURQPHWHUVDUHXVHGWRWHVWIRUEHDULQJQRLVH
NHBB has devised a series of rigidly monitored tests that measure
and vibration under a controlled load and speed.
starting and running torque, as well as vibration or “noise” levels.
During testing, a ball bearing is normally mounted with a thrust
Please consult NHBB Engineering for recommendations on the
load applied.
many specialized tests we can perform.
www.nhbb.com
66844_Text.indd 48
46
11/16/12 9:45 AM
Engineering
Materials
Bearing Alloys
The performance of any ball bearing depends on the characteristics
Extreme operating conditions may require the use of more exotic
of the selected alloys and their heat treatment. Choosing a material
PDWHULDOVOLNH%*® or nitrogen-enriched steel, which perform
with the correct hardness, corrosion resistance, and fatigue life en-
superbly at high speeds and while enduring extreme tempera-
sures that a bearing will function reliably within the application's
WXUHV KHDY\ ORDGV DQG FRUURVLYH FRQGLWLRQV $OWKRXJK FRVW
operational and environmental parameters.
considerations occasionally override longevity, the expense involved in more frequent bearing replacement often justifies the
&VWDLQOHVVVWHHODQGFKURPHVWHHODUHWKHPRVWFRP-
higher initial costs of specifying longer lasting specialty metals.
mon materials used in precision miniature and instrument ball
EHDULQJV$,6,&LVDKDUGHQHGVWDLQOHVVVWHHOVXLWDEOHIRUDQ\
$QRWKHURSWLRQIRUFKDOOHQJLQJRSHUDWLQJFRQGLWLRQVDUH1+%%
V
application that requires corrosion resistance at room- to
hybrid ceramic ball bearings, which consist of steel rings paired
PLGKRW WHPSHUDWXUH UDQJH &KURPH VWHHO 6$( LV XVHG
ZLWKFHUDPLFVLOLFRQQLWULGHEDOOV+\EULGEHDULQJVDUHW\SLFDOO\
for specific ball bearing applications where corrosion resistance
used in applications involving ultra-high speeds or requiring high
LVQRWDPDMRUFRQFHUQ&LVWKHVWDQGDUGFKRLFHIRUDZLGH
VWLIIQHVVVHHWKHQH[WSDJHIRUPRUHLQIRUPDWLRQ
variety of military and commercial applications, as it is the pre-
,QFOXGHGLQWKHFKDUWEHORZDUHVRPHRIWKHPDWHULDOVDYDLODEOH
IHUUHGPDWHULDOZLWKWKHEHVWDYDLODELOLW\7KHSURSHUWLHVRI&
through NHBB's Precision Division. The chart serves as a good
EDOOVFDQDOVREHHQKDQFHGZLWKDWLWDQLXPFDUELGHFRDWLQJDYDLO-
starting point for material selection, although a more detailed
DELOLW\LVOLPLWHG
analysis of the factors involved in a specific application is required
$V DQ DOWHUQDWLYH WR & 1+%% RIIHUV '' D VSHFLDOL]HG
EHIRUHPDNLQJDƂQDOGHWHUPLQDWLRQ$OOPDWHULDOVOLVWHGKHUHDUH
stainless steel material suitable for applications that require
heat treated to achieve optimum hardness and dimensional stabil-
corrosion resistance and smooth operation. However, the appli-
ity. Please contact NHBB to receive help with selecting the right
cability of this material is limited because it is imported.
material.
Material Types
MATERIAL
SPECIFICATION
CONTENTS
MELT METHOD
ATTRIBUTES
ROOM TEMP. HARDNESS (HRC)
BALLS
RINGS
&
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0.5% Mo
&(90
3UHPLXPTXDOLW\
/RZLPSXULW\OHYHO
Corrosion resistance
6$( $06
&
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9HU\ORZLPSXULW\OHYHO
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1$ &
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Premium quality
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1$
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/RZLPSXULW\OHYHO
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High temperature
capabilities
61-65
61-65
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enriched
steel
$06
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Extreme corrosion
resistance
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$06
* Consumable electrode vacuum melted
◊ Vacuum induction melted/vacuum arc remelted
† Pressure electroslag remelting
** Material is available in rings only.
47
66844_Text.indd 49
www.nhbb.com
11/16/12 9:45 AM
Engineering
Materials
Alternative Ball Material
Performance Benefits
CERBEC silicon nitride balls
®
(QJLQHHUHG VSHFLƂFDOO\ IRU EHDULQJV &(5%(&®
PROPERTIES
silicon nitride
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WKDQWROHUDQFHDQGH[WUHPHO\VPRRWKDQGFRQVLVWHQW
VXUIDFHƂQLVKPLFURLQFK5D7KHVWLIIQHVVOLJKWZHLJKW
and inertness of silicon nitride offer significant bearing perfor-
IMPROVEMENT IN
BEARING PERFORMANCE
/RZHULQWHUQDOIULFWLRQ
/RZHULQWHUQDOWHPSHUDWXUH
5HGXFHGFDJHDQGUDFHZD\ZHDU
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than steel
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Decreased centrifugal force
Decreased gyroscopic movement
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VWLIIHUWKDQVWHHO
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mance advantages, including higher operating speeds, extended
bearing life, and expanded design possibilities for unique and
demanding bearing applications.
Typical Applications
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Ř0HGLFDODQGGHQWDOKDQGSLHFHV
Ř7XUERPROHFXODUSXPSV
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Higher maximum temperature:
1000˚C vs. 320˚C for steel
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Durability in harsh environments
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Wider operating range
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Specifications
MATERIAL
SPECIFICATION
6LOLFRQ
Nitride
&(5%(&®
silicon
nitride
ATTRIBUTES
([WHQGHGOLIHORZHUWRUTXH
lighter weight, higher stiffness
ROOM TEMP.
HARDNESS (HRC)
!
Hybrid Ceramic Bearings
Radial Hybrid Ceramic Bearing
with Phenolic Crown Retailer
CERBEC® is a registered trademark of Saint-Gobain Performance Plastics Corporation.
www.nhbb.com
66844_Text.indd 50
48
11/16/12 9:45 AM
Engineering
Cages
The cage is the ball bearing component that separates and posiWLRQVWKHEDOOVDWHTXDOLQWHUYDOVDURXQGWKHEHDULQJőVUDFHZD\,W
is also referred to as the retainer or separator. The two standard
cage designs include:
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VHULHV&5(6
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,Q DGGLWLRQ WR WKHVH VWDQGDUG FDJHV 1+%% RIIHUV PDQ\ RWKHU
retainer designs to meet specific requirements. When selecting
the most appropriate retainer for your application, some factors
to consider include:
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Ř6WDUWLQJDQGUXQQLQJWRUTXHOLPLWDWLRQV
Ř2SHUDWLQJWHPSHUDWXUHUDQJH
Ř1RLVHOLPLWDWLRQV
Machined Retainers
Standard Cages
Ribbon, Two-Piece, Stamped and Crimped
Crown, One-Piece, Stamped
One of two standard designs for miniature and instrument ball
bearings, the two-piece ribbon retainer includes a closed pocket
design for good durability and loosely clinched tabs, which are
favorable for starting torque. This retainer design is economical
DQGUHDGLO\DYDLODEOHEXWLVOLPLWHGWRORZHUVSHHGDSSOLFDWLRQV
Two-piece ribbon retainers are used in radial bearings.
The one-piece stamped crown retainer is manufactured from
hardened stainless steel and has coined ball pockets, which
provide a hard, smooth, low-friction contact surface to the balls.
This design is very lightweight, smooth running, cost effective,
and readily available. The one-piece stamped crown retainer is
also used in radial bearings, but it has a slightly higher speed
capability than the stamped ribbon design. For speeds exceeding
the capabilities of this retainer, a machined retainer should be
FRQVLGHUHG
*For maximum operating speeds, refer to the chart on page 51.
49
66844_Text.indd 51
www.nhbb.com
11/16/12 9:45 AM
Engineering
Cages
Machined Cages
Machined Phenolic Crown Cage
Machined Polyamide-imide Full Type Cage
Crown, One-Piece
Full Type, One-Piece
For high speed applications, a machined crown retainer design
is a more appropriate choice than the two standard designs
VWDPSHGULEERQDQGVWDPSHGFURZQ7KLVUHWDLQHULVVXLWDEOHIRU
UDGLDOEHDULQJV,WLVPDQXIDFWXUHGIURPDYDULHW\RIPDWHULDOVWR
meet specific application requirements, including paper and
linen-based phenolics and polyamide-imide. Both phenolic materials can be vacuum impregnated with oil, allowing for better
lubricity within the ball pockets. The polyamide-imide material is
fully autoclavable, making it well suited for many medical and
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small amount of graphite and PTFE, which aids in lubricity
SURSHUWLHV,WVOXEULFLW\PD\EHIXUWKHUHQKDQFHGE\DSDWHQWHG
silver coating.
This retainer design is best suited for ultra-high speed applicaWLRQV ,WV EDODQFHG V\PPHWULFDO GHVLJQ PDNHV LW VWDEOH DW YHU\
high speeds. This retainer, which can only be utilized with angular
contact bearings, is manufactured from a variety of materials to
meet specific application requirements, including paper and
linen-based phenolics and polyamide-imide. Both phenolic
materials may be vacuum impregnated with oil, allowing for better lubricity within the ball pockets. The polyamide-imide material is fully autoclavable, making it well suited for many medical
DQGGHQWDODSSOLFDWLRQV$GGLWLRQDOO\SRO\DPLGHLPLGHFRQWDLQVD
small amount of graphite and PTFE, which aids in lubricity
SURSHUWLHV ,WV OXEULFLW\ PD\ EH IXUWKHU HQKDQFHG E\ DSDWHQWHG
silver coating.
Alternative Machined Cage Materials
Molded Cages
NHBB manufactures machined cages from the following materials
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FRQVXOWZLWKIDFWRU\IRUDYDLODELOLW\
Division offers a limited variety of molded retainers. These may
have a lower speed capability as compared to machined
Ř0HOGLQ®
retainers, which is mainly due to the fact that machined retainers
Ř'HOULQ®
may be held to tighter tolerances for critical dimensions.
Ř3*0
Ř3((.
Ř3DWHQWHGFRPSRVLWHPHWDOSRO\PHU
6LOYHUFRDWHGSRO\DPLGHLPLGH
Delrin® is a registered trademark of DuPont.
www.nhbb.com
66844_Text.indd 52
50
11/16/12 9:45 AM
Engineering
Cages
7KH PRVW FRPPRQ EHDULQJ FDJHV DUH VKRZQ EHORZ ,Q VRPH
NHBB can also supply specially designed cages to meet your
cases, such as in high-load applications, a full complement
specific requirements. Please contact NHBB for assistance with
design may be the best choice.
optimum cage selection.
Cage Types
DESCRIPTION
+
DESIGN
MAX. SPEED OPERATING
(ref.) dN** TEMP MAX.*
MATERIAL
COMMENTS
TYPICAL
APPLICATIONS
5LEERQ
Two-piece stamped
and crimped
5
$,6,
305 steel
r)
6XSHULRUVWDUWLQJWRUTXH
/RZFRVW
General purpose
Crown
One-piece stamped
H
$,6,
VWHHO
r)
Higher speed capability
than ribbon retainer
/RZFRVW
General purpose
KB
Phenolic-paper base
r)
High speed capability
Porous material
Vacuum impregnated with oil
Medical
Machine tools
High speed motors
5HTXLUHVOXEULFDWLRQ
Fully autoclavable
0HGLFDOGHQWDO
High temperature
6HOIOXEULFDWLQJ
)XOO\DXWRFODYDEOH
0HGLFDOGHQWDO
High temperature
Crown
One-piece machined
Crown
One-piece machined
Crown
One-piece machined
6LOYHUFRDWHG
Full type
One-piece machined
Full type
One-piece machined
Full type
One-piece machined
6LOYHUFRDWHG
KC
Phenolic-linen base
0
3RO\DPLGHLPLGH
r)
6&
Patented composite
metal-polymer
r)
r)
8OWUDKLJKVSHHGFDSDELOLW\
$QJXODUFRQWDFWEHDULQJRQO\
Porous material
Machine tool spindles
High speed motors
KN
Phenolic-paper base
KM
Phenolic-linen base
0
Polyamide-imide
r)
5HTXLUHVOXEULFDWLRQ
Fully autoclavable
0HGLFDOGHQWDl
High temperature
6)
Patented composite
metal-polymer
r)
5HTXLUHVOXEULFDWLRQ
Fully autoclavable
0HGLFDOGHQWDO
High temperature
r)
Porous polyamide-imide material
/RZWRPHGLXPVSHHG
r)
r)
6HOIOXEULFDWLQJ
/RZVSHHG
/LJKWORDG
Meldin®
&URZQIXOOW\SH
One-piece machined
Consult
factory
T1
PGM
Additional Ball Separator Designs
DESCRIPTION
+
DESIGN
MATERIAL
MAX. SPEED
(ref.) dN**
OPERATING
TEMP MAX.*
COMMENTS
TYPICAL
APPLICATIONS
7RURLG
77
37)(
r)
/RZWRUTXH
/RZVSHHG
6ORZURWDWLRQ
2VFLOODWLQJPRWLRQ
&U\RJHQLF
6OXJ
6/
37)(
r)
/RZWRUTXH
/RZVSHHG
Gimbal assembly
6ORZURWDWLRQ
/RZWRUTXH
+ Typical Part Number Designation.
* Rings and balls are heat stabilized to 300°F.
**dN is bore (in millimeters) x
rpm.
Additional cage designs and materials available. Please consult with factory.
51
66844_Text.indd 53
www.nhbb.com
11/16/12 9:45 AM
Engineering
Seals and Shields
6HDOV DQG VKLHOGV DUH SURWHFWLYH FORVXUHV WKDW UHWDLQ OXEULFDQWV
The following chart includes the common types of shields and
and assist in preventing contaminants from reaching internal
seals offered by NHBB. Please consult the factory for help in
surfaces. When specifying a seal or shield, consideration should
determining the appropriate seal or shield for your particular
be given to the compatibility of the cage and enclosure type to
application.
DOORZIRUDSSURSULDWHFOHDUDQFH,QWRUTXHVHQVLWLYHDSSOLFDWLRQV
it may be advantageous to use shields rather than seals because
there are no contacting surfaces to create drag.
Seal and Shield Types
DESCRIPTION
TYPE
DESIGN
MATERIAL
MAX. OPERATING TEMP.*
6KLHOG
5HPRYDEOHZLWKVQDSZLUH
Minimal clearance
Most popular
=
6WDLQOHVVVWHHOVHULHV
r)
6HDOZLWKVQDSZLUH
Provides minimal clearance to light
contact resulting in low torque
/
*ODVVUHLQIRUFHG37)(
r)
/VHDOZLWKEDFNLQJSODWH
Excellent sealing characteristics
/%3
*ODVVUHLQIRUFHG37)(VHDO
Metallic backing plate
r)
6HDO
'
%XQD1ERQGHGWRVWHHOLQVHUW
r)
6HDO
High cost
'
9LWRQ®ERQGHGWRVWHHOLQVHUW
r)
6HDOOLSULGLQJ
4
*ODVVUHLQIRUFHG37)(
r)
6HDOZLWKSURWHFWLYHVKLHOG
lip riding
4
*ODVVUHLQIRUFHG37)(
r)
* Rings and balls are heat stabilized to 300°F.
Viton® is a registered trademark of DuPont.
www.nhbb.com
66844_Text.indd 54
52
11/16/12 9:45 AM
Engineering
When a ball bearing is running under a load, force is transmitted
Suggested Radial Play
IURPRQHEHDULQJULQJWRWKHRWKHUWKURXJKWKHEDOOV6LQFHWKH
SUGGESTED
RADIAL PLAY*
TYPICAL APPLICATION
contact area between each ball and the rings is relatively small,
moderate loads can produce stresses of tens, even hundreds of
6PDOOSUHFLVLRQKLJKVSHHGHOHFWULFPRWRUV
WR
thousands, of pounds per square inch. These internal stresses
Tape guides, belt guides, low speed aps.
.0002 to .0005
have a significant impact on the bearing’s life and performance.
7DSHJXLGHVEHOWJXLGHVKLJKVSHHGDSV
WR
The internal geometry of a bearing—its radial play, raceway
Gyro gimbals, horizontal axis
.0002 to .0005
*\URJLPEDOVYHUWLFDOD[LV
WR
Precision gear trains, low speed electric motors,
synchros and servos
.0002 to .0005
Gyro spin bearings, ultra-high-speed turbines
and spindles
Consult factory
curvature and contact angle—must be carefully chosen so loads
will be distributed for optimal performance.
Radial and Axial Play
Most ball bearings are assembled so that a slight amount of
looseness exists between the balls and the raceways. This
*Measurement in inches.
ORRVHQHVVLVUHIHUUHGWRDVUDGLDOSOD\DQGD[LDOSOD\5DGLDOSOD\
,QPRVWEDOOEHDULQJDSSOLFDWLRQVUDGLDOSOD\LVIXQFWLRQDOO\PRUH
is the maximum distance that one bearing ring may be displaced
critical than axial play. While radial play has become the standard
with respect to the other in a direction perpendicular to the bear-
purchasing specification, you may also specify axial play require-
LQJD[LVZKHQWKHEHDULQJLVLQDQXQPRXQWHGVWDWH$[LDOSOD\RU
ments. Keep in mind, however, the values of radial play and axial
end play, is the maximum relative displacement between the two
play for any given bearing design are mathematically interdepen-
rings of an unmounted ball bearing in a direction parallel to the
GHQW 5DGLDO SOD\ LV DIIHFWHG E\ DQ\ LQWHUIHUHQFH ƂW EHWZHHQ
bearing axis.
WKH VKDIW DQG EHDULQJ ,' RU EHWZHHQ WKH KRXVLQJ DQG EHDULQJ
Radial
Play
Axial Play
2
F(Neg)
2'DVVKRZQRQSDJH6LQFHWKHLPSRUWDQWFRQGLWLRQLVWKH
actual radial play remaining after assembly of the complete
device, the radial play specification for the bearing must be modified
F(Neg)
in accordance with the discussion in the mounting and coding
section on page 61.
Free Angle of Misalignment
$VDUHVXOWRIWKHSUHYLRXVO\GHVFULEHGORRVHQHVVRUSOD\WKDWLV
permitted to exist between the components of most ball bearings, the inner ring may be cocked or tilted a small amount with
Radial and Axial Play
respect to the outer ring. This displacement is called free angle
6LQFH UDGLDO SOD\ DQG D[LDO SOD\ DUH ERWK FRQVHTXHQFHV RI WKH
of misalignment. The amount of misalignment allowable in a ball
same degree of looseness between the components, they bear a
bearing is determined by its radial play and track curvature
mutual dependence, yet their values are usually quite different in
values. Misalignment has positive practical significance because
PDJQLWXGH5DGLDOSOD\RIWHQYDULHVEHWZHHQLQDQG
it enables a ball bearing to accommodate small dimensional vari-
in., while axial play may range from .001 in. to .010 in. The
ations that may exist in associated shafts and housings. The
suggested radial play ranges for typical applications should
performance of a misaligned bearing will be degraded to a
always be consulted when a device is in the initial design phase.
certain extent, but for slight misalignments under reasonably
OLJKW ORDGV WKH HIIHFWV DUH QRW VLJQLƂFDQW LQ PRVW FDVHV ,Q
general, the amount of misalignment a bearing is subject to by the
Standard Radial Play Ranges
DESCRIPTION
RADIAL PLAY RANGE*
shaft and housing’s physical arrangement should never exceed
the bearing’s free angle of misalignment. Free angle of misalign-
NHBB CODE
Tight
.0001 to .0003
P13
Normal
.0002 to .0005
P25
/RRVH
WR
3
([WUDORRVH
WR
3
ment is typically less than one degree.
Nonstandard ranges may be specified.
Free Angle of Misalignment
53
66844_Text.indd 55
www.nhbb.com
11/16/12 9:45 AM
Engineering
Raceway Curvature
Contact Angle
5DFHZD\ FXUYDWXUH LV WKH UDWLR RI WKH UDFHZD\ UDGLXV WR EDOO
Contact angle is the angle between a plane perpendicular to the ball
GLDPHWHU7\SLFDOO\UDFHZD\FXUYDWXUHYDOXHVDUHHLWKHUWR
bearing axis and a line joining the two points where the balls make
SHUFHQW RU SHUFHQW 7KH ORZHU WR SHUFHQW FXUYDWXUH
contact with the inner and outer raceways. The initial contact angle
implies close ball-to-raceway conformity and is useful in applica-
of the bearing is directly related to radial play—the higher the radial
WLRQVZKHUHKHDY\ORDGVDUHHQFRXQWHUHG7KHKLJKHUSHUFHQW
play, the higher the contact angle—as well as its inner and outer
curvature is more suitable for torque sensitive applications.
WUDFN FXUYDWXUHV $ ORZ FRQWDFW DQJOH LV GHVLUDEOH IRU SXUH UDGLDO
ORDGVDKLJKHUFRQWDFWDQJOHLVUHFRPPHQGHGZKHQWKUXVWORDGLQJ
Raceway Radius
is predominant.
␤0
Ball Diameter
Thrust
Relationship of Track Radius to Ball Diameter
Thrust
Formulas for Radial Play, Axial Play
and Contact Angle
Radial Play
PD = 2Bd 1 – cos b0
PD = 2Bd – %G² – P ²
E
Contact Angle
Axial Play
The contact angle of thrust loaded bearings provides an indica-
PE = 2Bd sin b0
tion of ball position inside the raceways. When a thrust load is
PE = %G3D – P ²
applied to a ball bearing, the balls move away from the median
D
planes of the raceways and assume positions somewhere
Contact Angle
between the deepest portions of the raceways and their edges.
The table of contact angles shown here gives nominal values
b
–1 2Bd – PD
0 = cos
under no load.
2Bd
b0
= sin –1
Table of Contact Angles 0*
PE
2Bd
BALL SIZE
Db
RADIAL PLAY CODE
P25
P58
P811
ņ
ņ
ņ
PP
ņ
ņ
ņ
PP
ņ
ņ
ņ
ņ
ņ
ņ
ņ
ņ
ņ
ņ
ņ
ņ
ņ
ņ
ņ
ņ
ņ
ņ
ņ
ņ
ņ
fo RXWHUULQJFXUYDWXUH
ņ
ņ
ņ
d = ball diameter
*The contact angle is given for the mean radial play of the range shown,
i.e., for P25 (.0002 to .0005), contact angle is given for .00035.
PD = radial play
PE = axial play
b0 = contact angle
B = total curvature = fiIo – 1
fi LQQHUULQJFXUYDWXUH
*Expressed as the ratio of raceway radius to ball diameter.
www.nhbb.com
66844_Text.indd 56
54
11/16/12 9:45 AM
Engineering
Lubrication
Types of Lubricants
Oil is the basic lubricant for ball bearings. NHBB offers both
When used with a greased bearing, this method prevents the
petroleum-based and synthetic oils, such as diesters, silicone
cage material from leaching oil from the lubricant. Normally, the
SRO\PHUVDQGƃXRULQDWHGFRPSRXQGV,QJHQHUDOGLHVWHUVKDYH
base oil of the grease is used in the cage to prevent incompatibility.
better low temperature properties, lower volatility, and better
Grease packing DSSUR[LPDWHO\ WR RI D EDOO EHDULQJőV
WHPSHUDWXUHYLVFRVLW\FKDUDFWHULVWLFVWKDQSHWUROHXPEDVHGRLOV
internal free volume is one of the most common methods of lu-
6LOLFRQHV DQG ƃXRULQDWHG FRPSRXQGV SRVVHVV HYHQ ORZHU
brication. Grease quantity can be controlled by the use of special
YRODWLOLW\DQGZLGHUWHPSHUDWXUHYLVFRVLW\SURSHUWLHV
lubrication equipment.
Grease is an oil to which a thickener has been added to prevent
Grease plating consists of mixing a quantity of grease and sol-
PLJUDWLRQ IURP WKH OXEULFDWLRQ VLWH UHVXOWLQJ LQ ORQJHU OLIH ,W LV
vent to the desired consistency, lubricating the bearing with this
used in situations where frequent replenishment of the lubricant
mixture, then evaporating the solvent at a moderate tempera-
is undesirable or impossible. The operative properties of grease
ture, leaving a thin film of grease on raceways and balls.
depend almost wholly on the choice of the base oil. Other factors
being equal, the use of grease instead of oil results in higher
Limiting Speed
starting and running torque and may limit the bearing to lower
No exact formula exists for calculating the maximum operating
speeds.
VSHHG RI D EDOO EHDULQJ 6XVWDLQHG KLJK VSHHG SHUIRUPDQFH LV
6ROLGƂOPOXEULFDQWVLQFOXGHDQ\QRQƃXLGVXVHGWRSUHYHQWZHDU
dependent on the specific properties of the bearing, shaft, hous-
and reduce friction. They range from simple sacrificial cages
ing, and other components, as well as the application’s specific
to graphite powder and ion sputtering. Each type must be
operating conditions. The retainer is the feature of a ball bearing
HQJLQHHUHGIRUWKHVSHFLƂFDSSOLFDWLRQ6ROLGƂOPOXEULFDQWVDUH
that most affects rotational speed, followed by tolerance grade
very useful in areas of temperature extremes, vacuum, radiation,
and lubricant type and fill. The dimensional accuracy of mating
pressure, or harsh environments where conventional lubricants
components limits speeds, as does the application’s maximum
RSHUDWLQJWHPSHUDWXUH,ISURSHUO\LQVWDOOHGDQGOXEULFDWHGKLJK
would fail. Furthermore, they do not deteriorate in storage.
precision ball bearings will operate for long periods of time at
Lubrication Methods
high speeds.
Centrifuging an oil-lubricated bearing removes excess oil and
$IWHUGHWHUPLQLQJWKHOXEHW\SHDQGƂOODSSURSULDWHIRUWKHVSHHG
leaves only a very thin film on all surfaces. This method is used
of the application, consult the chart on page 51 to select a suit-
on very low torque bearings and can be specified for critical
able retainer. The chart shows the maximum operating tempera-
applications.
tures and speeds for each retainer type. To verify limiting speeds
For ball bearings with porous cages, vacuum impregnation forc-
for unique operating conditions not covered here, and for full ball
es lubricant into the pores, using the cage as an oil reservoir.
complement-type ball bearings, please consult the factory.
Oils and Base Fluids
PETROLEUM
Excellent load carrying abilities
Moderate temperature range
ŎWRr)
Greases with petroleum oil bases
have high dN capability
UHFRPPHQGHGIRUOLJKWWRKHDY\
ORDGVDQGPRGHUDWHWRKLJKVSHHGV
SYNTHETIC
SILICONE
Wide temperature range
ŎWRr)
ŎWRr)
ŎWRr)
5HVLVWR[LGDWLRQ
/HVVƂOPVWUHQJWKWKDQGLHVWHUV
6WDEOHDWKLJKWHPSHUDWXUHV
/HVVƂOPVWUHQJWKWKDQ
petroleum oils
Tend to migrate
Chemically inert
RZYDSRUSUHVVXUH
/
7RUU
55
66844_Text.indd 57
PERFLUORINATED POLYETHER
www.nhbb.com
11/16/12 9:45 AM
Engineering
Lubrication
Speed Factor
Recommended Speed Limits (dN) for Grease
with Select Base Oils
The maximum usable operating speed of a grease lubricant is
dependent on the type of base oil. The speed factor is a function
TYPE
RIWKHERUHRIWKHEHDULQJGLQPLOOLPHWHUVPPDQGWKHVSHHG
dN
TEMPERATURE RANGE °F (°C)
WRWR
'LHVWHU
WRWR
6LOLFRQH
WRWR
3HUIOXRULQDWHGSRO\HWKHU
WRWR
3HWUROHXP
RIWKHEHDULQJ1LQUHYROXWLRQVSHUPLQXWHUSPZKHUH
G1 GEHDULQJERUHPP[1USP
Lubricant Specifications
NHBB has included a table of commercial and military lubricants
The standard quantity of oil varies with bearing size: it is
and their recommended uses. When ball bearings are ordered
DSSUR[LPDWHO\RQHGURSPJSHUEHDULQJXSWR5VL]HDQG
without a specified lubricant, it is the policy of NHBB to lubricate
WZR GURSV PJ IRU ODUJHU VL]HV 7KH VWDQGDUG TXDQWLW\ RI
ZLWK 0,/35) RLO &RPSDQ\ VWDQGDUG OXEULFDQWV DUH /2
grease is 25-35% of the bearing’s internal free volume. For non-
:LQGVRU/XEH/;RLOSHU0,/35)DQG/*5R\FR
standard applications, please consult the factory for specific
JUHDVHSHU0,/35))RUQRQVWDQGDUGOXEULFDQWVSOHDVH
lube fill recommendations.
consult the factory to select an appropriate type.
Lubrication Types
CODE
BRAND NAME
BASIC TYPE
OPERATING TEMP.
USES
/2
:LQGVRU/;0,/35)
Fuchs Mineral Oil
6\QWKHWLFRLO
WRr)
/LJKWJHQHUDOSXUSRVHLQVWUXPHQWRLO
/2
5R\FR®0,/35)
5R\DO/XEULFDQWV
6\QWKHWLFRLO
WRr)
/LJKWJHQHUDOSXUSRVHLQVWUXPHQWRLO
/<
.U\WR[®$& Dupont
)OXRULQDWHGRLO
WRr)
+LJKWHPSHUDWXUHVWDELOLW\
Good lubricity properties
/<
Carnation 0LQHUDORLO
/*
%HDFRQ
EXXON Mobil
6\QWKHWLFJUHDVH
WRr)
*HQHUDOSXUSRVHJUHDVH
/*
5R\FR®0,/35)
5R\DO/XEULFDQWV
6\QWKHWLFJUHDVH
WRr)
&RUURVLRQUHVLVWDQFHKHDY\ORDGV
+LJKVSHHG
/<
5KHRWHPS®
1<(
6\QWKHWLFQRQVLOLFRQH
JUHDVH
WRr)
6SHFLDOW\OXEHKLJKVSHHGKLJKWHPS
,QKLELWVR[LGDWLRQDQWLZHDUSURWHFWLRQ
/<
0RELO 0,/35)
EXXON Mobil
6\QWKHWLFK\GURFDUERQ
grease
WRr)
:LGHWHPSHUDWXUHUDQJH
Good low temperature torque
/<
65,
&KHYURQ
0LQHUDOJUHDVH
WRr)
/RQJHUOLIHXQGHUKLJKVSHHGKLJKWHPS
:DWHUVDOWZDWHUUHVLVWDQFH
/<
.U\WR[®$&0,/35)
Dupont
)OXRULQDWHGJUHDVH
WRr)
+LJKWHPSHUDWXUHVWDELOLW\ZLWKJRRG
lubricity properties
/<
65/ Kyodo
6\QWKHWLFJUHDVH
WRr)
/RZQRLVHDQGORZWRUTXHDSSOLFDWLRQV
/<
%UD\FRWH® Micronic®()
Castrol®
3HUIOXRULQDWHGSRO\HWKHU
JUHDVH
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+RVWLOHFKHPLFDOHQYLURQPHQW
6SDFHDSSOLFDWLRQV
/<
$VRQLF*/<
Kluber
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/RZQRLVHKLJKVSHHG
/<
0LQHEHDSURSULHWDU\
0LQHEHD&R/WG
JUHDVH
WRr)
/RQJHUOLIHXQGHUKLJKVSHHGKLJKWHPS
Royco® is a registered trademark of Anderol Company.
Krytox® is a registered trademark of DuPont.
www.nhbb.com
66844_Text.indd 58
&RQVXOWIDFWRU\
Bracote®, Micronic®, and Castrol® are registered trademarks of Castrol Limited.
+LJKVSHHG)'$DSSURYHG
Rheotemp® is a registered trademark of Nye Lubricants.
56
11/16/12 9:45 AM
Engineering
Preload is defined as the initial axial load placed on a bearing or
Preload
Offset
set of bearings during installation. Preloading facilitates precise
control over the operating geometry of the bearing’s mating
parts, a useful function in applications where axial and radial
load
inner
load
inner
movement must be held within critical limits.
Ball bearings are preloaded in order to:
Ř(OLPLQDWHUDGLDODQGD[LDOORRVHQHVV
Ř5HGXFHRSHUDWLQJQRLVH
Bearings in True State
Ř,PSURYHSRVLWLRQLQJDFFXUDF\
Bearings Preloaded
O.D. Marking
:KHQ D EDFNWREDFN '% GXSOH[ SDLU LV PRXQWHG WKH RXWHU
Ř5HGXFHUHSHWLWLYHUXQRXW
rings abut and the inner rings are drawn together, providing
Ř5HGXFHWKHSRVVLELOLW\RIGDPDJHIURPYLEUDWRU\ORDGLQJ
maximum moment stiffness.
Ř,QFUHDVHOLIHDQGD[LDOFDSDFLW\
Ř,QFUHDVHVWLIIQHVV
Preload
Offset
Preloading is accomplished either by using a spring preload or,
as in duplex ball bearings, through a solid stack of parts.
Spring Preloading
load
outer
6SULQJSUHORDGLQJFRQVLVWVRIDFRLOVSULQJRUDZDY\ZDVKHUWKDW
load
outer
applies a force against the inner or outer ring of one of the bearings in the assembly. The spring force is normally applied against
WKH QRQURWDWLQJ ULQJ 6LQFH D VSULQJőV ORDG LV IDLUO\ FRQVLVWHQW
over a wide range of compressed length, the use of a spring for
Bearings Preloaded
O.D. Marking
:KHQIDFHWRIDFH')GXSOH[SDLUVDUHPRXQWHGWKHLQQHUULQJV
preloading eliminates the need for holding tight location toler-
abut and the outer rings are drawn together, providing a higher
ances on machined parts. For example, retaining rings can be
radial and axial stiffness and accommodation of misalignment.
used in the spindle assembly, thus saving the cost of a locating
shoulder, shims or threaded members. Normally, a spring would
Preload
Offset (TYP)
not be used where the assembly must withstand reversing
thrust loads.
Duplex Ball Bearings
load
outer
Duplex ball bearings are stacked pairs with built-in preloads.
load
inner
Duplex bearings are manufactured with the raceways of the inner
and outer rings offset slightly. When the set of bearings is
assembled, the thrust load required to press the adjacent faces
of the rings together becomes the desired preload. Duplex ball
Bearings Preloaded
O.D. Marking
bearings are used when precise location control is required. They
:LWK WDQGHP '7 SDLUV ERWK LQQHU DQG RXWHU ULQJV DEXW DQG
also help satisfy the requirements of increased axial and radial
are capable of sharing a thrust load, providing increased thrust
VWLIIQHVVDQGGHƃHFWLRQFRQWURO
capacity.
The three methods of mounting preloaded duplex bearings are
NHBB can provide assistance in selecting the appropriate
EDFNWREDFN'%IDFHWRIDFH')DQGWDQGHP'7
preload specifications for your application.
57
66844_Text.indd 59
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11/16/12 9:45 AM
Engineering
Static Load Ratings
Calculating Equivalent Radial Load
7KH VWDWLF ORDG UDWLQJ &o JLYHQ LQ WKH SURGXFW OLVWLQJV SDJHV
More often than not, bearings whose loads are primarily radial
LVWKHUDGLDOORDGWKDWDQRQURWDWLQJEHDULQJZLOOVXSSRUW
are also subjected to some axial forces. When the magnitude of
ZLWKRXWGDPDJH,QHYDOXDWLQJVWDWLFORDGFRQGLWLRQVDQ\IRUFHV
this axial component of the load is greater than a negligible
exerted during assembly and test must be considered along with
value, it is convenient to interpret this combined radial and thrust
vibration and impact loads sustained during handling, test, ship-
load in terms of a simple radial load so that the basic life equa-
ment, and assembly.
tion may be used. This simple radial load, known as the equivalent load, is defined as that constant stationary radial load which,
Dynamic Load Ratings
if applied to a rotating inner ring, would give the same life as that
'\QDPLFORDGLQJ&LQFOXGHVEXLOWLQSUHORDGZHLJKWVXSSRUWHG
which the bearing will attain under the actual conditions of load
members, and the effect of any acceleration due to vibration or
and rotation.
PRWLRQFKDQJHV7KHG\QDPLFORDGUDWLQJ&IRUDUDGLDORUDQJX-
For conventional bearing types other than those with filling
lar contact ball bearing is a calculated, constant radial load that
notches, the equivalent radial load is given by the maximum of the
a group of apparently identical bearings will theoretically endure
two values where:
for a rating life of one million revolutions. The dynamic load rating
LVDUHIHUHQFHYDOXHRQO\$EDVHYDOXHUDWLQJOLIHRIRQHPLOOLRQUHYRlutions has been chosen for ease of calculation. The dynamic
ORDG UDWLQJ YDOXHV & JLYHQ LQ WKH SURGXFW OLVWLQJV LQFOXGH WKH
D3r = VFr
E3r = XVFr<)a
V = rotation factor
effects of race-to-ball conformity and are in accordance with
$%0$6WDQGDUGVDQG
X = radial factor
< WKUXVWIDFWRU
Rating Life
Fr = radial load
7KHUDWLQJOLIH/10 of a group of apparently identical ball bearings
Fa = thrust load
LV WKH OLIH LQ PLOOLRQV RI UHYROXWLRQV WKDW RI WKH JURXS ZLOO
,Q FDOFXODWLRQV IRU PLQLDWXUH DQG LQVWUXPHQW EHDULQJV ZKRVH
FRPSOHWHRUH[FHHG)RUDVLQJOHEHDULQJ/10 also refers to the
outside diameter is .625 inches and below, the following values
OLIH DVVRFLDWHG ZLWK UHOLDELOLW\ 7KH UDWHG OLIH /10 FDQ EH
DUHVXIƂFLHQWO\DFFXUDWH; < DQGH ,QWKHFDVH
computed from the formula:
of the larger bearing series, consult the table on page 60 for
/10 &3r3 x 106 revolutions
GHWHUPLQLQJYDOXHV;<DQGH,QDOOVHULHVWKHURWDWLRQDOIDFWRU
V is 1.0 for inner ring rotation and 1.2 for outer ring rotation with
where: & G\QDPLFUDGLDOORDGUDWLQJOE
respect to load.
The dynamic radial load (C) can be found in the
,QWKHFKDUWRQSDJHWKHIDFWRUHUHSUHVHQWVWKHUDWLRRI)a9)r
product tables.
IRUZKLFKWKHWZRHTXDWLRQVDUHHTXDO,IWKHUDWLRRIORDGVLVVXFK
Pr G\QDPLFHTXLYDOHQWUDGLDOORDGOE
that Fa9)r H WKHQ IRUPXOD D LV XVHG LI )a9)r > e, then
See calculating dynamic equivalent radial load below.
IRUPXODELVXVHG
)RU D PRUH FRQVHUYDWLYH HVWLPDWH RI OLIH WKDQ /10, multiply the
DERYH IRUPXOD E\ D UHOLDELOLW\ PRGLƂHU D2 9DOXHV IRU D2 are
Bearing Life Under Varying Loads
ORFDWHGLQWKH5HOLDELOLW\0DWHULDO/LIH0RGLƂHUWDEOHIRXQGRQSDJH
,Q PDQ\ DSSOLFDWLRQV EHDULQJV RSHUDWH DW GLIIHUHQW ORDGV DQG
7KH WDEOH SURYLGHV VHOHFWHG PRGLƂHUV IRU FDOFXODWLQJ IDLOXUH
VSHHGVIRUH[WHQGHGSHULRGVRIWLPH,IWKHGDWDIRUORDGVVSHHGV
UDWHVGRZQWR/1IRUERWK&DQGDOOR\V
and their time periods are available, the following formula may be
used to calculate life:
Rating Life in Hours
1
/n = ___________________________
p1
p2
p3
pn
BBB BBB BBB
ř BBB
/n1 /n2 /n3 /nn
To convert the rating to number of hours, multiply the results of
the above equation by the following:
/10 USP[
Note: p1S2S3řSn = 1.0
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66844_Text.indd 60
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11/16/12 9:45 AM
Engineering
Life Modifiers
Lubricant Life
)RUPRVWFDVHVWKH/10 life obtained from the basic rating life
$EHDULQJőVHIIHFWLYHOLIHLVRIWHQJRYHUQHGE\WKHOXEULFDQWőVOLIH
formula described earlier will provide a satisfactory criteria for
This is usually the case for applications involving very light loads
bearing performance. For particular applications, however, it may
DQGRU YHU\ VORZ VSHHGV ,Q VXFK LQVWDQFHV WKH FRQYHQWLRQDO
be desirable to consider life calculations for different reliabilities
fatigue life calculated will be unrealistically high. The lubricant’s
and special bearing properties and operating conditions.
ability to provide sufficient film strength is affected by:
Ř4XDQWLW\DQGFRQGLWLRQRIWKHOXEULFDQWLQWKHEHDULQJ
Bearing Material
Ř(QYLURQPHQWDOFRQGLWLRQVHJDPELHQWWHPSHUDWXUH
NHBB recommends reducing the load rating published for 52100
DUHDFOHDQOLQHVV
E\IRU&7KLVLVDFRQVHUYDWLYHDSSURDFKWRHQVXUHWKDW
Ř7KHORDGVSHHGF\FOH
the bearing capacity is not exceeded under the most adverse
FRQGLWLRQV7KLVLVLQFRUSRUDWHGLQWKHUHOLDELOLW\PRGLƂHUD2DV
6SHFLDOL]HG RLOV DQG JUHDVHV ZKLFK H[KLELW IDYRUDEOH SHUIRU-
shown:
mance characteristics over an extended period, are available.
Table of Reliability Material Life Modifier (a2 )
REQUIRED
RELIABILITY (%)
Other Life Adjustments
LN
52100
a2 =
440C
a2 =
/10
1.00
0.50
/5
0.62
0.31
/
Ř9LEUDWLRQDQGRUVKRFNLPSDFWORDGV
/ 3
Ř$QJXODUPLVDOLJQPHQW
/ 2
Ř2VFLOODWRU\GXW\
/1
0.21
0.11
Ř+LJKVSHHGHIIHFWV
/RDGVDUHVHOGRPDSSOLHGLGHDOO\2IWHQWKHFRQYHQWLRQDOUDWLQJ
life has to be modified due to application abnormalities, intentional or unknown. The following conditions have the practical
HIIHFWRIPRGLI\LQJWKHLGHDOWKHRUHWLFDOUDWLQJOLIH/10
Ř2SHUDWLRQDWHOHYDWHGWHPSHUDWXUHV
Elastohydrodynamics (EHD Effect)
Ř)LWV
The presence of a thin film of oil at the mutually contacting
Ř,QWHUQDOGHVLJQ
ball-to-raceway interface enhances the load capacity of a
ball bearing.
While it is difficult to provide the exact effect upon life under any
of these conditions, NHBB is able to provide bearing life
estimates based on empirical data to help you forecast bearing
life for your application.
59
66844_Text.indd 61
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11/16/12 9:45 AM
Engineering
Table A: Factors X, V and Y
BEARING
TYPE
IN RELATION TO THE LOAD
THE INNER RING IS:
Fa
ZD2
SINGLE ROW BEARINGS
Fa
>e
VFr
UNITS
LB., IN.
ROTATING
V
STATIONARY
V
X
Y
e
5DGLDOGHHSJURRYH
EDOOEHDULQJV
$QJXODUFRQWDFWEDOO
EHDULQJVZLWKFRQWDFW
DQJOH
r
1,000
1.00
0.52
10r
100
1.52
0.36
r
300
500
1,000
1.12
1.02
1.00
0.50
0.55
0.56
r
r
r
r
r
Nomenclature is as follows:
- V = rotation factor
- X = radial factor
- Y = thrust factor
- Fr = radial load
- Fa = thrust load
- Z = number of balls
- D = ball diameter in inches
Values of X, Y, and e for load or contact angle other than shown are obtained by linear interpolation.
Turn to page 58 for instructions on how to calculate equivalent radial load.
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66844_Text.indd 62
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11/16/12 9:45 AM
Engineering
Mounting and Coding
Bearing Fits and the Design of Mating Equipment
Caution 4.,WLVUHODWLYHO\HDV\WRGDPDJHDPLQLDWXUHDQGLQVWUX-
$FFXUDWHVKDIWDQGKRXVLQJƂWVDUHLPSRUWDQWIRUSURSHUEHDULQJ
ment bearing during assembly simply by exceeding its load
LQVWDOODWLRQDQGRSHUDWLRQ,QRUGLQDU\DSSOLFDWLRQVPLQLDWXUHEDOO
FDSDFLW\$GHTXDWHƂ[WXULQJPXVWEHSURYLGHGIRUKDQGOLQJDQG
bearings are used with a light load, so a light interference fit to a
assembling precision bearings to ensure that:
QDUURZ FOHDUDQFH ƂW LV XVXDOO\ VXIƂFLHQW /LJKW FURVV VHFWLRQ
Ř:KHQDVVHPEOLQJWKHEHDULQJWRWKHVKDIWIRUFHLV
bearings, such as Torque Tube and Thinex bearings, are more
applied only to the inner ring.
sensitive to shaft and housing imperfections and require looser
Ř:KHQDVVHPEOLQJLQWRWKHKRXVLQJIRUFHLVDSSOLHGRQO\
fits than heavier cross section bearings.
to the outer ring.
$EHDULQJWKDWLVƂWWHGWRRWLJKWO\RUWRRORRVHO\RULVGDPDJHG
Ř$Q\PRYHPHQWRUVKRFNORDGVZKLFKZRXOGEHWUDQVPLWWHG
during assembly by excessive force or shock loading, may
through the bearing are eliminated.
degrade the performance of your assembly. This possibility can
GHVLJQRIPDWLQJSDUWVVHH7DEOHRI5HFRPPHQGHG)LWVRQSDJH
Coding Classification of Bore
and Outside Diameter
DQG E\ REVHUYLQJ WKH IROORZLQJ IRXU FDXWLRQV GXULQJ WKH
When required for selective assembly or for other reasons, bores
assembly process.
DQGRU RXWVLGH GLDPHWHUV PD\ EH FODVVLƂHG LQWR FRGHG VL]H
be reduced by following some general guidelines during the
groupings within the tolerance ranges specified in this chart.
Caution 1. When establishing shaft or housing sizes, the effect
Methods of measuring and determining classification size are
RIGLIIHUHQWLDOWKHUPDOH[SDQVLRQPXVWEHWDNHQLQWRDFFRXQW,I
VSHFLƂHGLQWKH$%0$6WDQGDUGXQGHU6HFWLRQDQG
thermal gradients are present or dissimilar materials are used,
URRP WHPSHUDWXUH ƂWV PXVW EH DGMXVWHG DFFRUGLQJO\ $SSUR[L-
Complete code designation consists of the bore code as the first
mate thermal coefficients for common materials are available
digit or letter and the outside diameter code as the second digit
from NHBB.
or letter. When only one dimension is classified, the other is
GHQRWHGE\
Caution 2. When miniature and instrument bearings are interference fitted, either intentionally or as a result of thermal gradients,
the bearing radial play is reduced by an amount equal to ap-
Coding Classification Tolerance Ranges
SUR[LPDWHO\RIWKHDFWXDOGLDPHWUDOLQWHUIHUHQFHƂW7KXV
5DGLDOSOD\ SIZE TOLERANCE*
(FROM MAXIMUM)
Tolerance interference fit = .0003T
PD[LPXPWRŎ
$
RILQWHUIHUHQFHƂW [ –.00005 to –.00010
B
–.00010 to –.00015
C
–.00015 to –.00020
D
.00005**
CALIB.
.0001***
CALIB.
1
5HVXOWDQWRSHUDWLRQDOUDGLDOSOD\ WLJKW
2
The bearing will be subject to early failure in most applications
because it may already be overloaded. This problem is solved
NHBB part number nomenclature:
-**C44 (.000050 in. increment)
-***CXX (.00010 in. increment)
either by a higher radial play or looser fit.
Caution 3.,IWKHRXWHUULQJRULQQHUULQJIDFHLVWREHFODPSHGRU
abutted against a shoulder, make sure the shoulder configuration
provides a good mounting surface:
Examples
Ř7KHVKRXOGHUIDFHPXVWEHSHUSHQGLFXODUWRWKHEHDULQJ
“C12”
Bore falls between 0.00000 & -0.00010
O.D. falls between -0.00010 & -0.00020
œ&$%Ŕ
%RUHIDOOVEHWZHHQ O.D. falls between -0.00005 & -0.00010
“C10”
Bore falls between
O.D. is not coded
mounting diameter within .0002 inches per inch.
Ř7KHFRUQHUEHWZHHQWKHPRXQWLQJGLDPHWHUDQGWKHIDFH
must have either an undercut or a fillet radius no larger than
that shown in the product tables under column “r”.
0.00000 & -0.00010
Ř7KHVKRXOGHUGLDPHWHUPXVWFRQIRUPWRWKHWDEOH
on page 62.
61
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Engineering
Recommended Fits
Table of Recommended Fits*
SHAFT FIT ◊
SHAFT DIAMETER ◊
HOUSING FIT ◊
HOUSING DIAMETER ◊
7DSHJXLGHUROOHUSXOOH\FDP
IROORZHURXWHUULQJURWDWLRQ
Ŏ/
GŎ
GŎ
/Ŏ7
'Ŏ 'Ŏ 'ULYHPRWRUVSULQJSUHORDG
7Ŏ/
GŎ
d – .0003
Ŏ/
'
D – .0000
3UHFLVLRQV\QFKURRUVHUYR
Ŏ /
GŎ
d – .0003
Ŏ/
'
D – .0001
3RWHQWLRPHWHU
7Ŏ/
GŎ
d – .0003
Ŏ/
'
D – .0000
(QFRGHUVSLQGOH
Ŏ/
GŎ
d – .0003
Ŏ7
'Ŏ D – .0003
TYPICAL APPLICATIONS
* For Radial Play .0002 to .0005
◊ Measurement in inches.
L = loose fit.
T = tight fit.
d = bearing bore as listed.
D = bearing O.D. as listed.
+ Bearings must be purchased
with bore and O.D. coding.
EXAMPLE: To use SSR-2 bearing in a potentiometer, the shaft diameter
should be .1250 –.0001 to .1250 –.0003 or .1249 to .1247. The housing
should be .3750 +.0002 to .3750 –.0000 or .3752 to .3750.
Table of Recommended Shoulder Diameter*
MINIMUM
SHAFT SHOULDER
DIAMETER
MAXIMUM
HOUSING SHOULDER
DIAMETER
665,
665,
665,
665,
665,
665,
665,
665,
665,
665
665$
665,
665;
665,
665,
665
665;
665
665
665,
BASIC SIZE
MINIMUM
SHAFT SHOULDER
DIAMETER
MAXIMUM
HOUSING SHOULDER
DIAMETER
665,
665
665,
665
665
665
665,
665,
665,
665
665,
665,
665,
665,
BASIC SIZE
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66844_Text.indd 64
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11/16/12 9:45 AM
Engineering
Tolerances
For more than thirty years, NHBB has been an active member in
7KH$%(&WROHUDQFHVOLVWHGEHORZDUHFXUUHQWDVRIWKLVFDWDORJőV
WKH$PHULFDQ%HDULQJ0DQXIDFWXUHUV$VVRFLDWLRQ$%0$DQGLWV
printing. These tolerances are reviewed regularly and updated as
DVVRFLDWHGEDOOEHDULQJWHFKQLFDOFRPPLWWHHWKH$QQXODU%HDULQJ
UHTXLUHG7KH$%0$6WDQGDUGVPD\EHREWDLQHGE\FRQWDFWLQJ
(QJLQHHUVő&RPPLWWHH$%(&
$%0$06WUHHW1:6XLWH:DVKLQJWRQ'&
Inner Ring*
CHARACTERISTIC
%RUHWROHUDQFHOLPLWV
Bore 2 pt. out of roundness
ABEC 1
ABEC 3P
ABEC 5P
ABEC 7P
–.0003
–.0002
–.0002
–.0002
ABEC 9P
–.0001
.—
.—
.0001
.0001
.00005
.—
.—
.—
.0002
.—
.0001
.00015
.0002
.0001
.0001
.0001
.00005
.00005
.00005
Bore runout with face
.—
.—
.0003
.0001
.00005
5DFHUXQRXWZLWKIDFH
.—
.—
.0003
.0001
.00005
Bore taper
5DGLDOUXQRXW
Width variation
(1)
Add .0001 to the tolerance if bore size is over 10 mm (.3937 in.).
Outer Ring*
CHARACTERISTIC
Mean O.D. tolerance limits
CONFIGURATION
SIZE RANGE
ABEC 1
ABEC 3P
$OO
LQ
PP
Ŏ
Ŏ
Ŏ
Ŏ
Ŏ
LQ
RYHUPP
Ŏ
Ŏ
Ŏ
Ŏ
Ŏ
LQ
PP
Ŏ
Ŏ
Ŏ
Ŏ
Ŏ
LQ
RYHUPP
Ŏ
Ŏ
Ŏ
Ŏ
Ŏ
LQ
PP
Ŏ
Ŏ
Ŏ
Ŏ
. —
. —
Open
Maximum O.D. tolerance limits
ABEC 5P
ABEC 7P
ABEC 9P
6KLHOGHG
LQ
RYHUPP
Ŏ
Ŏ
Ŏ
Ŏ
2'SWRXWRIURXQGQHVV
2SHQ
2SHQ
6KLHOGHG
LQ
LQ
LQ
. —
. —
. —
. —
.ŏ
. —
.0001
.0002
.0001
.0002
.00005
. —
2'WDSHU
$OO
$OO
6KLHOGHG
LQ
LQ
LQ
. —
. —
. —
. —
.ŏ
. —
.0001
.0002
.0001
.0002
.00005
. —
$OO
$OO
$OO
$OO
3ODLQ
3ODLQ
)ODQJHG
LQ
LQ
LQ
LQ
LQ
LQ
LQ
. —
. —
. —
. —
. —
. —
. —
. —
. —
. —
.0002
.0003
.0003
.0003
.0003
.0001
.00015
.0002
.0002
.0003
.00005
.00005
.00005
.0001
. —
5DGLDOUXQRXW
:LGWKYDULDWLRQ
2'UXQRXWZLWKIDFH
5DFHUXQRXWZLWKIDFH
Flange width tolerance limits
—
—
.ŏ
. —
–.0020
–.0020
–.0020
. —
. —
Flange diameter tolerance limits
—
—
.ŏ
. —
–.0020
–.0010
–.0010
. —
. —
*Measurement in inches, unless otherwise indicated.
Ring Width*
CHARACTERISTIC
Width
CONFIGURATION
ABEC 1
ABEC 3P
ABEC 5P
ABEC 7P
ABEC 9P
6LQJOHEHDULQJ
components
–.005
–.005
–.001
–.001
–.001
Duplex pair
.—
.—
.ŏ
.—
–.015
–.015
–.015
63
66844_Text.indd 65
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11/16/12 9:45 AM
Engineering
Tolerances
ABEC 5T Tolerances
ABEC 7T Tolerances
BORE DIAMETER
OVER
,QQHU5LQJ
RADIAL
RUNOUT
INCL.
BORE DIAMETER
MEAN DIAMETER
TOLERANCE
-.0002
-.0003
OVER
,QQHU5LQJ
OUTSIDE DIAMETER
BORE INNER RING
INCL.
SINGLE WIDTH
-.001
-.005
-.0002
-.0002
-.0003
-.0002
-.0002
-.0003
2XWHU5LQJ
OVER
MEAN DIAMETER
TOLERANCE
OUTSIDE DIAMETER
2XWHU5LQJ
RADIAL
RUNOUT
INCL.
DUPLEX WIDTH
BORE INNER RING
-.015
-.020
OVER
Please refer to ABMA Standard #12 for more information.
INCL.
SINGLE WIDTH
-.001
-.001
DUPLEX WIDTH
-.015
-.020
Please refer to ABMA Standard #12 for more information.
www.nhbb.com
66844_Text.indd 66
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11/16/12 9:45 AM
Engineering
Torque
6WDUWLQJ WRUTXH DQG UXQQLQJ WRUTXH DUH H[WUHPHO\ LPSRUWDQW LQ
Maximum Starting Torque Values For ABEC 7P Bearings
applications such as gyro gimbals, low power consumption
MAXIMUM STARTING TORQUE
MILLIGRAM – MILLIMETERS
PRWRUVDQGSUHFLVLRQSRVLWLRQLQJGHYLFHV,QVXFKDSSOLFDWLRQV
NHBB
BASIC SIZE
the total system should be evaluated in the design phase for
WRUTXH LQSXW YHUVXV WRUTXH UHƃHFWHG E\ WKH YDULRXV GULYHQ
FRPSRQHQWV ,Q PDQ\ FDVHV EHDULQJ GHVLJQ DQG PDQXIDFWXUH
665,
665,
665,
665,
665,
may be modified to reduce torque.
TEST LOAD
(THRUST)
GRAMS
RADIAL PLAY
TIGHT FIT
.0001" –.0003"
NORMAL FIT
.0002" –.0005"
LOOSE FIT
.0005" –.0008"
665,
665,
665,
665
665$
665,
665,
665,
665
665,
665,
665
665,
665,
Our precision miniature and instrument bearings have proven to
The hardware and information required to successfully perform a
be highly reliable when used within the defined limits of their
post-service analysis include:
capabilities. However, bearings, like any mechanical device, are
Ř$OOEHDULQJFRPSRQHQWVDQGWKHDVVHPEO\LQZKLFKWKH
subject to failure. Failure may occur due to improper mounting,
bearing was used
lubrication, environment, loading, maintenance, or contamina-
Ř%HDULQJPDQXIDFWXULQJORWQXPEHUVLIDYDLODEOH
tion after installation, as well as poor workmanship or material
Ř+LVWRULFDOLQIRUPDWLRQWKDWGHVFULEHVWKHFRQGLWLRQV
deficiencies.
under which the device operated, such as speed, loads,
NHBB maintains a technical staff experienced in the analysis of
temperature, and atmospheric conditions, as well as any
EHDULQJ IDLOXUH 8VLQJ WKHLU VSHFLDOL]HG NQRZOHGJH DQDO\WLFDO
unusual shock, vibration, electrical arcing, or handling
tools, and ultra-precision measuring and testing equipment, the
situations to which the device was subjected
cause of bearing failure can often be determined. This capability
8SRQFRPSOHWLRQRIWKHEHDULQJDQDO\VLVDGHWDLOHGUHSRUWQRWLQJ
is available to customers experiencing bearing-related problems.
our findings will be provided.
,QWKHHYHQWWKDWSRVWVHUYLFHEHDULQJDQDO\VLVLVGHVLUHGSOHDVH
contact a NHBB sales representative who will make the necessary
arrangements.
65
66844_Text.indd 67
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11/16/12 9:45 AM
Engineering
Interchange Chart
NHBB
NMB
TIMKEN (MPB)
BARDEN
MYONIC (RMB)
ORIGINAL NHBB P/N
665,
''5,
6&
65
8/;
65
665,
''5,
6&
65
8/;
65
665,==
''5,==
6&++
6566
8/=;
6533
665,
''5,
6&
65
5;
65
665,==
''5,==
6&++
6566
5);
6533
665,
''5,
6&
65
5;
65
665,==
''5,==
6&++
6566
5);
6533
665,
''5,
6&
65
8/;
65
665,==
''5,==
6&++
6566
8/=;
6533
665,
''5,
6&
65
5;
65
665,==
''5,==
6&++
6566
5);
66533
665,
''5,
6&
65
8/;
65
665,==
''5,==
6&++
6566
8/=;
6533
665,
''5,
6&
65
5;
65
665,==
''5,==
6&++
6566
5);
6533
665,
''5,
6&
65
65
665,==
''5,==
6&++
6566
6533
665
''5
65&
65
5;
65
665==
''5==
65&++
6566
5);
6533
665$
''5$
65$&
65$
65$
665==$
''5==$
65$&++
65$33
665,
''5,
6&
65
8/;
65
665,==
''5,==
6&++
6566
8/=
6533
665,
''5,
6&
65
8/;
65
665,==
''5,==
6&++
6566
8/=;
6533
665,
''5,
6&
65
8/;
65
665,==
''5,==
6&++
6566
8/=;
6533
665
''5
655
65
5;
65
665==
''5==
655++
6566
5);
6533
665,
''5,
6&
65
8/;
65
665,==
''5,==
6&++
6566
8/=;
6533
665,
''5,
6&
65
8/;
65
665,==
''5,==
6&++
6566
8/=;
6533
665
''5
65&
65
5;
65
665==
''5==
65&++
6566
5);
6533
665,
''5,
65$5
65$
65$'
665,==
''5,==
65$5++
65$66
65$33'
665,
''5,
65
65
65
665,==
''5,==
65++
6566
6533
665,
''5,
655
65
65'
This chart is intended as a reference only. Users should consult with the listed manufacturers’ catalogs to establish dimensional interchangeability. Ball
complements and load ratings may differ although dimensionally equivalent. NHBB cannot be held responsible for any errors contained herein.
www.nhbb.com
66844_Text.indd 68
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11/16/12 9:45 AM
Engineering
Interchange Chart
NHBB
NMB
TIMKEN (MPB)
BARDEN
MYONIC (RMB)
ORIGINAL NHBB P/N
665,==
''5,==
655++
6566
6533'
665,
''5,
655
65
65'
665,==
''5,==
655++
6566
6533'
665,)
''5,)
6)&
6)5
8/.;
6)5
665,)
''5,)
6)&
6)5
8/.;
6)5
665,)==
''5,)==
6)&++
6)566
8/.=;
6)533
665,)
''5,)
6)&
6)5
5.;
6)5
665,)==
''5,)==
6)&++
6)566
5.);
6)533
665,)
''5,)
6)&
6)5
5.;
6)5
665,)==
''5,)==
6)&++
6)566
5.);
6)533
665,)
''5,)
6)&
6)5
8/.;
6)5
665,)==
''5,)==
6)&++
6)566
8/.=;
6)533
665,)
''5,)
6)&
6)5
5.;
6)5
665,)==
''5,)==
6)&++
6)566
5.);
6)533
665,)
''5,)
6)&
6)5
8/.;
6)5
665,)==
''5,)==
6)&++
6)566
8/.=;
6)533
665,)
''5,)
6)&
6)5
5.;
6)5
665,)==
''5,)==
6)&++
6)566
5.);
6)533
665,)
''5,)
6)&
6)5
6)5
665,)==
''5,)==
6)&++
6)566
6)533
665)
''5)
65)&
6)5
5.;
6)5
665)==
''5)==
65)&++
6)566
5.);
6)533
665,)
''5,)
6)&
6)5
8/.;
6)5
665,)==
''5,)==
6)&++
6)566
8/.=;
6)533
665,)
''5,)
6)&
6)5
8/.;
6)5
665,)==
''5,)==
6&++
6)566
8/.=;
6)533
665,)
''5,)
6)&
6)5
8/.;
6)5
665,)==
''5,)==
6)&++
6)566
8/.=;
6)533
665)
''5)
65)&
6)5;
6)5&
665)==
''5)==
65)&++
6)566
5.);
6)533
665,)
''5,)
6)&
6)5
8/.;
6)5
665,)==
''5,)==
6)&++
6)566
8/.=;
6)533
665,)
''5,)
6)&
6)5
8/.;
6)5
665,)==
''5,)==
6)&++
6)566
8/.=;
6)533
665)
''5)
65)&
6)5
5.;
6)5
665)==
''5)==
65)&++
6)566
5.);
6)533
665,)
''5,)
6)&
6)5
6)5
665,)==
''5,)==
6)&++
6)566
6)533
665,)
''5,)
6)5;
6)5'&
665,)==
''5,)==
65)5++
6)566
6)533'
This chart is intended as a reference only. Users should consult with the listed manufacturers’ catalogs to establish dimensional interchangeability. Ball
complements and load ratings may differ although dimensionally equivalent. NHBB cannot be held responsible for any errors contained herein.
67
66844_Text.indd 69
www.nhbb.com
11/16/12 9:45 AM
Engineering
FRACTION
INCH
mm
0.0250
0.6350
FRACTION
INCH
mm
FRACTION
INCH
mm
0.3150
8.0000
19.0000
1.0000
9.0000
20.0000
10.0000
21.0000
2.0000
11.0000
22.0000
23.0000
12.0000
3.0000
13.0000
24.0000
25.0000
0.5512
14.0000
1.0236
26.0000
4.0000
15.0000
5.0000
1.0630
27.0000
16.0000
1.1025
28.0000
0.6500
16.5100
29.0000
30.0000
0.2362
6.0000
17.0000
7.0000
40.0000
18.0000
www.nhbb.com
66844_Text.indd 70
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11/16/12 9:45 AM
Engineering
The numbers in the center column refer to the temperatures
WHPSHUDWXUHZLOOEHIRXQGWRWKHOHIWRIWKHFHQWHUFROXPQ,IFRQ-
either in Celsius or Fahrenheit which need conversion to the other
verting from Celsius to Fahrenheit, the answer will be found to
scale. When converting from Fahrenheit to Celsius, the equivalent
the right.
Celsius to Fahrenheit Conversion Table
°F
100
212
400
700
110
230
210
410
710
1310
120
216
420
720
130
266
221
430
730
60
140
440
740
232
450
750
460
760
-166
-100
-90
-130
-112
-70
°C
-51
-60
66
150
302
-50
160
320
-40
170
470
770
-30
-22
180
356
480
780
-20
190
490
790
-23
-10
200
260
500
800
0
32
210
266
510
810
1
220
520
820
2
35.6
110
230
530
830
1526
-16.1
3
116
240
540
840
-15.6
4
121
250
550
1022
850
1562
-15.0
5
260
500
560
860
6
132
270
570
870
7
280
536
580
880
1616
-13.3
8
290
310
590
890
9
300
316
600
1112
900
1652
-12.2
10
50.5
310
321
610
1130
910
20
160
320
620
920
-1.1
30
166
330
626
332
630
1166
930
40
340
640
940
10
50
122
350
662
650
1202
510
950
15.6
60
360
660
1220
516
960
21.1
70
370
670
521
970
80
380
360
680
1256
980
32.2
90
390
366
690
532
990
69
66844_Text.indd 71
°F
-110
-80
°F/°C
-62
°C
°F
°F/°C
°F
°F/°C
°C
°F/°C
°C
www.nhbb.com
11/16/12 9:45 AM
www.nhbb.com
66844_Text.indd 72
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11/16/12 9:45 AM
72
NHBB Overview
73
74
75
myonic USA, Chatsworth, CA
76
Minebea Co., Ltd.
71
66844_Text.indd 73
www.nhbb.com
11/16/12 9:45 AM
NHBB Overview
Committed to Excellence
We continue to build strong alliances within the aerospace, defense, dental, medical, and
high technology markets, working across the enterprise to provide business solutions
that keep pace with our customers’ technological advances.
The precision tolerances required by the customers we support necessitate a complete
FRPPLWPHQWWRTXDOLW\$W1+%%WKDWFRPPLWPHQWLVDSSDUHQWLQHYHU\WKLQJZHGRIURP
an investment in advanced capabilities, to real-time quality control, to continuous
improvement in both processes and people. Our commitment to manufacturing excellence is seen time and again in our high level of service and product quality.
Applications Engineering
Knowing how to leverage knowledge, industry experience, emerging technology, and
industry trends is the true differentiator when it comes to customized bearing assemEOLHV $W 1+%% ZH RIIHU FRPSOHWH EHDULQJ HQJLQHHULQJ VXSSRUW IRU HYHU\ SKDVH RI D
product’s life cycle, and we do this with a passion for serving as a valued technical
resource to our customers.
Manufacturing
,QYHVWLQJLQWKHPRVWDGYDQFHGWHFKQRORJLHVDYDLODEOHJLYHV1+%%DVLJQLƂFDQWDGYDQtage in precision manufacturing. We’re able to guarantee the close tolerances necessary
in life-critical and high speed applications, as well as address manufacturing challenges
in-house through new tools, precision gages, and state-of-the-art production processes.
Care for the Environment
$W 1+%% RXU VWULQJHQW HQYLURQPHQWDO SROLF\ HPSKDVL]HV SROOXWLRQ SUHYHQWLRQ
regulatory compliance, and continuous improvement aimed at reducing the
impact of every phase of the manufacturing process. Our objectives also include the
promotion of environmental awareness among employees and within our communities.
www.nhbb.com
66844_Text.indd 74
72
11/16/12 9:45 AM
$VWURGHVLJQVDQGPDQXIDFWXUHVKLJKO\VSHFLDOL]HGFXVWRPEHDULQJVQH[WXSDVVHPEOLHVDQGPDFKLQHGSDUWVUHTXLULQJ
significant engineering expertise and specialty materials. Our stringent process controls and advanced planning system
enable us to satisfy unique production requirements and provide improved delivery scheduling as part of our continuous
improvement culture and commitment to customer satisfaction.
PRODUCTS
Ř5RGHQGV
Ř6SKHULFDOV
Ř/LQNDVVHPEOLHV
ŘBushings
Ř/RDGHUVORWEHDULQJV
ŘCustom-lined parts
Ř%HDULQJVXSWR2'
ŘNext-up assemblies & machined parts
NMB, KARUIZAWA, JAPAN*
Ř5RGHQGV
Ř6SKHULFDOV
Ř6SKHULFDOUROOHUEHDULQJV
Ř6HOIDOLJQLQJUROOHUEHDULQJV
ŘNext-up assemblies & machined parts
Ř,62
Ř$65HY&
Ř%RHLQJ'
Ř)$$)$5
NADCAP
Ř$&Ŏ+HDWWUHDWLQJ
Ř$&Ŏ&KHPLFDOSURFHVVLQJ
Ř$&Ŏ1RQGHVWUXFWLYHWHVWLQJ
Ř$&Ŏ&RPSRVLWHVERQGLQJ
ENVIRONMENTAL MANAGEMENT
CERTIFICATION
Ř,62
$VWURLVWKH1RUWK$PHULFDQVDOHVUHSUHVHQWDWLYHIRUSURGXFWVPDQXIDFWXUHGE\10%őVIDFLOLW\LQ.DUXL]DZD-DSDQ
giving customers access to a global supply of high quality commercial aerospace parts.
www.nhbb.com
66844_Text.indd 75
73
11/16/12 9:45 AM
HiTech specializes in customized and sophisticated bearing assemblies, cylindrical roller bearings, and large-diameter
precision ball bearings. We have the ability to provide unique, custom bearing solutions to complex and demanding challenges, including high loads, extreme speeds, limited space, simplified assembly, and highly-efficient lubrication distribution, to name a few.
PRODUCTS
Ř&RPSOH[EDOODQGUROOHUEHDULQJV
Ř%HDULQJVL]HVWKURXJKPP2'
Ř&\OLQGULFDOUROOHUEHDULQJV
Ř%DOOEHDULQJV
Ŏ$QJXODUFRQWDFW
– Gothic arch
Ŏ'XSOH[VXSHUGXSOH[
– Torque tube
– Thin section
Ř,62
Ř$65HY&
Ř%RHLQJ'
NADCAP
Ř$&Ŏ+HDWWUHDWLQJŎLQFOXGLQJFDUEXUL]LQJ
Ř$&Ŏ&KHPLFDOSURFHVVLQJŎLQFOXGLQJSDVVLYDWLRQ
Ř$&Ŏ1RQGHVWUXFWLYHWHVWLQJ
CERTIFICATION
Ř,62
www.nhbb.com
66844_Text.indd 76
74
11/16/12 9:45 AM
myonic
USA, Chatsworth, CA
P\RQLF LV D *HUPDQ PDQXIDFWXUHU RI SUHFLVLRQ PLQLDWXUH EDOO EHDULQJV DFTXLUHG LQ E\ 0LQHEHD &R /WG DQG
UHSUHVHQWHGLQWKH86VROHO\E\P\RQLF86$ . myonic’s manufacturing facility specializes in the design and manufacture
of highly-engineered mechanical subassemblies and miniature ball bearings for the dental, medical, aerospace and
industrial markets.
PRODUCTS
Ř8OWUDSUHFLVLRQPLQLDWXUHEDOOEHDULQJV
– Deep groove radial
Ŏ$QJXODUFRQWDFW
– Full line of metric
Ř7KUXVWEHDULQJV
Ř;UD\WXEHEHDULQJV
Ř$LUFUDIWLQVWUXPHQWEHDULQJV
Ř'HQWDOEHDULQJV
Ŏ,QWHJUDOVKDIW
– Complete turbine assemblies
Ŏ/DVHUZHOGHGVKLHOGV
– Hybrid ceramic
Ŏ6SLQGOHVDXWRFKXFNV
Ř6KLPVDQGZDVKHUV
Ř&XVWRPL]HGEHDULQJV\VWHPV
Ř&RQWUDFWPDQXIDFWXUHGSURGXFWV
QUALITY CERTIFICATION
Ř,62
CERTIFICATION
Ř,62
75
66844_Text.indd 77
www.nhbb.com
11/16/12 9:45 AM
The Minebea Group of Companies
New Hampshire Ball Bearings and myonic are an integral part of an international business, the Minebea Group of
&RPSDQLHV 0LQHEHD &R /WG LV WKH ZRUOGőV OHDGLQJ VSHFLDOL]HG PDQXIDFWXUHU RI PLQLDWXUH EDOO EHDULQJV DQG KLJK
precision components for the telecommunications, aerospace, automotive, and electrical appliance industries.
7KH 0LQHEHD *URXS LV FRPSULVHG RI VXEVLGLDULHV LQ FRXQWULHV DQG HPSOR\V RYHU SHRSOH ,Q DGGLWLRQ WR
its worldwide manufacturing capabilities, Minebea’s vision is to lead the competition through manufacturing and
technological excellence.
www.nhbb.com
66844_Text.indd 78
76
11/16/12 9:45 AM
NHBB
tel: 818.993.4100
fax: 818.407.5020
Astro Division
175 Jaffrey Road
Peterborough, NH 03458
tel: 603.924.4100
fax: 603.924.4419
myonic USA
tel: 818.701.4833
fax: 818.407.5020
NHBB Europe
Siemensstrasse 30
63225 Langen
Germany
tel: (49) 6103.913.341
fax: (49) 6103.913.342
HiTech Division
PRECISION DIVISION
:
155 Lexington Drive
Laconia, NH 03246
tel: 603.524.0004
fax: 603.524.9025
PRECISION DIVISION
Precision Division and
Corporate Headquarters
Miniature and Instrument
Custom Specialty
Bearing Assemblies
Middle Size Bearings
www.nhbb.com
© 2012 NHBB, Inc.
66844_Cov.indd 1
11/7/12 3:09 PM

Products and Engineering Catalog

Transcription

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