L980 - Trailer Axle Application Guide| REV B

Transcription

APPLICATION
GUIDE
HENDRICKSON TRAILER AXLE
LIT NO: L980
DATE: August 2011
REVISION: B
APPLICATION GUIDE — HENDRICKSON TRAILER AXLE
TABLE OF CONTENTS
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
PURPOSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
AXLE IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
INTERPRETING TRAILER AXLE PART NUMBERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
INTERPRETING TRAILER AXLE DESCRIPTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
TRLAXLE MODEL NUMBERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
AXLE RECOMMENDED USE GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
BEARING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
BRAKE SETUP CONFIGURATIONS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
VALUE ADDED OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
GROSS AXLE WEIGHT RATING AND AXLE BEAM RATING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
AXLE BEAM RATING - STRAIGHT AXLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
AXLE BEAM RATING - DROP CENTER AXLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
S-CAMS AND BRAKES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
CAM SAME VS. CAM OPPOSITE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
AXLE STRUCTURAL RATING VS. BRAKE PERFORMANCE RATING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
S-CAM DRUM BRAKE RATINGS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
BRAKE CHAMBER BRACKETS AND SLACK ADJUSTER CLEARANCE
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
L980 B
INTRODUCTION
Welding or machining on any axle component is
prohibited unless noted otherwise in this document
or other Hendrickson service literature.
Hendrickson presents this publication to aid in
understanding the Hendrickson Trailer Axle
product offering and the application requirements.
Hendrickson Trailer Axles are engineered to meet
the demanding requirements of the industry and
incorporate the latest design and manufacturing
technologies. These products are built specifically
to provide a durable trailer axle to the market.
Fixed (mechanical) axle stops are prohibited to
contact the axle and limit travel.
Swing arm mechanisms are approved in some
loading and unloading applications. Contact
Hendrickson for assistance.
GENERAL INFORMATION
The descriptions and specifications contained in this
publication are current at the time of printing.
Hendrickson reserves the right to discontinue or
modify its models and / or procedures and to
change specifications at any time without notice.
Any reference to brand names in this publication
are made as an example of the types of tools and
materials recommended for use and should not
be considered an endorsement. Equivalents may
be used.
IMPORTANT NOTICE
Hazard signal words (such as Warning or
Caution) appear in various locations throughout
this publication. Information accented by one of
these signal words must be observed at all times.
Additional notes are utilized to emphasize areas of
procedural importance and provide suggestions for
ease of repair. The following definitions indicate the
use of these signal words as they appear throughout
the publication.
WARNING: INDICATES HAZARDS OR UNSAFE
PRACTICES WHICH COULD RESULT
IN SEVERE PERSONAL INJURY OR
DEATH.
CAUTION: Indicates hazards or unsafe
practices which could result in
damage to equipment or minor
personal injury.
NOTE: Additional service information not covered in
the service procedures.
L980 B
3
PURPOSE
AXLE APPLICATIONS: Trailer axles used as AUXILIARY
LIFT AXLES in vehicles :
The purpose of this document is to provide original
equipment manufacturers (OEMs) of medium and
heavy-duty vehicles with application guidelines for
Hendrickson trailer axles. The user of this document
can use charts found in this book to determine the
Gross Axle Weight Rating, (GAWR) of their
Hendrickson trailer axle in North America.
VEHICLE TYPES include: dump trucks, bottom dump,
bulk hauler, bus / coach, car carrier, end dump,
mixer, RV with trailer, semi-end dump, straight truck,
tanker, tractor with trailer, transfer-dump, truck with
trailer and wrecker.
USE OF GUIDELINES
These guidelines apply to: on-, on-off and offhighway (AA) turnpike or interstate, (A) on-highway,
(B) on- / offhighway or mountainous highway, (C)
off-highway vocational categories and axle
applications for vehicles operated in North America.
VOCATIONAL CATEGORIES:
Airport fueler, city delivery, construction, crane, fire
truck, heavy haul, intra-city coach, line haul, logging,
military, mining, motorhome, oil field, refuse, rescue /
crash, school bus, shuttle bus, snow removal, transit
bus and utility.
AXLE APPLICATIONS: Trailer axles used in trailer
types such as the following in Figure 1:
figure 1: Trailer axles used in trailer types
4
L980 B
These guidelines do not apply to the use of
Hendrickson trailer axles outside of North America
in vocational categories, axle applications (Trailer
Types or Vehicle Types) other than those specified
in this book or ratings other than those listed in
this book. Approval for such uses may be requested
on an individual basis by submitting an approval
request to Hendrickson. To submit such request,
please fill out the Hendrickson Trailer Axle Ordering
Guide (L954). This form can be found online at
www.hendrickson-intl.com.
WARRANTY
Hendrickson trailer axle warranties are set out
in the Comprehensive Warranty Statement for
USA and Canada (L583). Warranty statements
can be obtained via the Hendrickson website at
www.hendrickson-intl.com. Applications and
installations must either meet the requirements
of these guidelines for automatic approval or be
approved in writing by Hendrickson’s engineering
department. Failure to obtain application approval
for the use of Hendrickson trailer axles or their
components in non-approved applications will
void the warranty. Modification of the vehicle or
axle and brake configuration, changes in the
vocational use or service outside the limits of
these guidelines may void warranty coverage.
QUESTIONS
For answers to questions concerning the guidelines
or to request a Hendrickson trailer axle Spec Form for
a use not covered by these guidelines, contact:
Hendrickson Trailer Suspensions
2070 Industrial Place S.E.
Canton, OH 44707-2641
Telephone: 866-743-3247 (866-RIDE-AIR)
Website: www.hendrickson-intl.com
CHANGES TO GUIDELINES
These guidelines are subject to change at any time
without prior notice at the discretion of Hendrickson.
To get the most up-to-date version of these guidelines
visit www.hendrickson-intl.com.
L980 B
5
AXLE IDENTIFICATION
STANDARD PRODUCT OFFERINGS
Standard Hendrickson trailer axles are available
in various spindle and tube combinations and are
designed for on-highway use. Axles are available in
straight or drop- or raisedcenter axles (as shown in
figure 2) and can be ordered fully dressed with hubs
and brake drums. Other miscellaneous components
such as slack adjusters, air chambers, cam tubes,
etc. can also be specified.
The model number, customer part number (if
applicable), a description and a serial number are
all imprinted on an ID tag that is attached to the axle
(as shown in figure 3).
Older trailer axle product ID tags were made of myler
and located near the center of the axle beam. Newer
trailer axle products have a stainless steel ID tag
located on the inside edge of the brake chamber
bracket.
The part number is used to identify the axle
specifications. This number should be referred to
when contacting Hendrickson to determine the
appropriate service parts. The serial number is used
to identify a particular axle along with all of the
component parts as specified by the customer at the
time of order. The axle description serves as a
generic description of the axle assembly and can be
used to determine some specific axle configuration
parameters.
Bent or Drop-center Axle
Straight Axle
figure 2
Location of new Stainless Steel ID Tag –
outside edge of the brake chamber bracket
New Stainless Steel ID Tag for Trailer Axles
MODEL
CUS P/N
MANUFACTURED UNDER ONE OR MORE OF
THE FOLLOWING PATENTS:
U.S. PATENT NOS.: 6024417, 6725743,
6926122, 7273082, 7506940, 7537224,
7559521, 7585031, 7731300
MEXICAN PATENTE NOS.: 223713, 243519
248384, 251415, 259900
DESC
S/N
AUSTRALIAN PATENT NOS.: 739422,
2002320074, 2003243658, 2004220148
2006287900, 2006302001
NEW ZEALAND PATENT NOS: 510161,
527792, 535511, 536263
AND OTHER ISSUED FOREIGN PATENTS AND
PENDING U.S. AND FOREIGN PATENTS.
HTA
TM
AXLE
figure 3
6
L980 B
INTERPRETING TRAILER AXLE PART NUMBERS (DAP)
D22
AX
5
0
3
AXXXX
Axle Model and Spindle Type
Application Specific
Axle Type
Wheel-end Configuration
Wall Thickness
Seventh Digit
AXLE MODEL AND SPINDLE TYPE
•
•
•
•
•
•
•
•
•
•
WHEEL-END CONFIGURATION
A45 - Tapered spindle, solid bar
A65 - Tapered spindle, solid bar
D10 - Tapered spindle / Steer axle
D22 (HN) - Tapered spindle
K22 - Tapered spindle, press-up
S22 - Tapered spindle, solid bar
K30 - Tapered spindle, press-up
S30 - Tapered spindle, solid bar
P22 (HP) - Pro-Par style spindle
T24 - Drive axle / Truck spindle
• 0 - With spider / flanges, no brakes, hubs or
drums
• 1 - With brakes, hubs and drums
• 2 - With spiders / flanges, hubs and drums,
no brake shoes
• 3 - With brakes, no hubs or drums
• 4 - With hubs, no spiders / flanges or brakes
• 5 - No spiders / flanges, brakes, hubs or drums
NINTH DIGIT
• A - Assemble to order options are picked at the
time of placing the axle order. Options include
brake shoe lining, ABS sensor installation and
brand selection. Assemble to order options are
for double anchor pin (DAP) axles only.
AXLE TYPE
• AX - Straight axle
• AU - Bent-tube (drop-center) axle
• AD - Straight axle, air disc brake
WALL THICKNESS
•
•
•
•
•
•
•
•
1
2
3
5
6
6
7
8
-
TENTH DIGIT UP
Stub axle (an axle cut in half) right
Stub axle (an axle cut in half) left
Stub axle (an axle cut in half) universal
½" Nominal wall thickness, 5.00" OD
5
/8" Nominal wall thickness, 5.00" OD
5
/8" Wall thickness, 5.00" and 5.75" OD
¾" Wall thickness, 5.00" OD
Solid bar
• Axle specific - Numbers are sequential and are
used to record the bill of material for each axle
SEVENTH DIGIT
•
•
•
•
•
•
•
•
•
L980 B
0 - Standard trailer axle
1 - iPAC suspension axle, no longer used
2 - AdVANtage suspension axle
5 - Nominal ½" wall stub axle, 5.00" OD
6 - Nominal 5/8" wall stub axle, 5.00" OD
6 - 5/8" Wall stub axle, 5.00" and 5.75" OD
7 - ¾" Wall stub axle, 5.00" OD
8 - Machined from solid bar stub axle
H - 5/8" HD wall, 5.00" OD
7
INTERPRETING TRAILER AXLE DESCRIPTORS
D22
FC
167
W
NH
A
Axle Model and Spindle Type
Air Chamber
Brake Shoe Type
Wheel-end Type
Brake Size
Spider Type
AXLE MODEL AND SPINDLE TYPE
•
•
•
•
•
•
•
•
•
•
•
•
•
•
BRAKE SIZE
A45 - Tapered spindle, solid bar, straight axle
A65 - Tapered spindle, solid bar, straight axle
D10 - Tapered spindle, straight axle
DD10 - Tapered spindle, drop-center axle
D22 (HN) - Tapered spindle, straight axle
DD22- Tapered spindle, drop-center axle
K22 - Tapered spindle, press-up, straight axle
S22 - Tapered spindle, solid bar, straight axle
K30 - Tapered spindle, press-up, straight axle
S30 - Tapered spindle, solid bar, straight axle
P22 (HP) - Pro-Par style spindle, straight axle
PD22- Pro-Par style spindle, drop-center axle
T24 - Drive axle / Truck spindle, straight axle
TD24 - Drive axle / Truck spindle, drop-center
axle
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
BRAKE SHOE TYPE
•
•
•
•
•
•
•
•
•
•
CS - Cast Shoe
FB - Fabricated, Bolted lining
FC - Fast Change fabricated
FCX - Fast Change Xtra Life
FCXX - Fast Change Xtra Life II
FT - Fabricated, Tapered (pin style)
N - No brakes, flanges spiders
NBW - No Brakes, With spiders
NB - No brakes, with flanges
ADB - Air disc brakes
123 - 121/4" X 3" — no longer available
1235 - 121/4" X 31/2" — no longer available
1255 - 121/4" X 51/2"
1275 - 121/4" X 71/2"
153 - 15" X 3" — no longer available
1586 - 15" X 85/8"
165 - 161/2" X 5"
167 - 161/2" X 7"
1686 - 161/2" X 85/8"
187 - 18" X 7"
208 - 20" X 8"
SPIDER TYPE
• B - Bolt-on
• F - Flanges only (for bolt-on spider “retrofit”)
• W - Weld on
WHEEL-END TYPE
•
•
•
•
•
•
•
•
•
•
•
NH - No hub or wheel
W - Cast spoke wheel
WD - Cast spoke wheel and drum
B6 - 6 stud 83/4 BC hubs
B13 - 10 stud 133/16 BC hubs
SW6 - 6 stud 83/4 BC hubs
AIR CHAMBER
• A - Air chambers mounted on axle
8
L980 B
In general, TRLAXLE product allows all the same
standards and options currently available on
INTRAAX®, such as:
• Hendrickson proprietary wheel-end packages:
HVS (3-yr), HLS (5-yr) and HUS® (7-yr)
• TIREMAAX® CP and EC
• Brake sizes, plus 121/ " × 71/ ", 121/ " × 51/ " and
121/ " × 5"
• Brake lining options
TRLAXLE MODEL NUMBERS
In June 2008, Hendrickson announced the
implementation of a new configuration system for
nonintegrated trailer axles called TRLAXLE. Your
customer service representative will be able to
create a TRLAXLE model number and provide a
price on most HN (D22) and HP (P22) axles
when you send in your completed Axle Ordering
Guide (L964) or Electronic Axle Ordering Guide
(E964). Other specialty axles (drop- or raisedcenter axles, A45/A65, K22/K30, D10/D21 and T24)
will continue to use their current model number designations, like D22AU603A2-2 or K30AX603A22-2.
4
2
4
2
4
In addition to a new TRLAXLE model number,
Hendrickson made the axle description more
meaningful. Below is a guideline for interpreting
the new description of your TRLAXLE model number.
Newly created, non-configurable axle specs and
specialty axles will also adopt this new description
logic. The following box provides a detailed
explanation of all the new axle description codes.
Most HN and HP axle specs have been converted to
new TRLAXLE.### model numbers. In most cases,
the TRLAXLE bill of material will be identical to the
D22 or P22, except with following component
changes, if applicable:
For additional information, call 1-866-RIDEAIR
(743-3247) or visit www.hendrickson-intl.com.
• Stemco Voyager is the standard seal replacing
Chicago Rawhide
• Abex 3030-197 brake lining (Abex 931-162
for 12.25" × 7.50" brake size) is the standard
brake lining; Spicer Silver Supreme and Haldex
brake linings are discontinued
• Hendrickson's patented axle filter is the
standard on all axles
• New configurations require specifying (1)
slacks only, (2) both slacks and chambers or
(3) neither slacks or chambers; we cannot
configure chambers only
• ABS sensors on drum brake specs are
90 degrees, not straight
• ABS sensors on air disc brake specs are
straight, not 90 degrees
• Castellated nuts are not configurable
and must be ordered separately
Model Number: TRLAXLE.13
L980 B
9
RTR Lube
Dust Shields
RTR Packages
Chambers
Brake Adjusters
Cam Option
ABS Option
Cam Length
Brake Size
Brake Type
Spider Type
Auto Lube
Axle
Track
Tube Wall
Tire Inflation
Tube Size
Axle Type
HN- S 50 5 - 0774 - W F 1670 L - S H M 1-C O Spindle
DESCRIPTION:
HENDRICKSON AXLE DESCRIPTION MATRIX
Spindle
HN - Tapered Spindle
HP - Parallel Spindle (Pro-Par Type)
HPX - Parallel Spindle Cross-drill
P90 - HUS Unitized
Axle Type
S - Straight
U - Bent
C - Cambered
H - Half / Stub
Tube Size
50 - 5" Round
56 - 5-3/ " Round
4
Tube Wall
4 - 1/ " Nominal
5 - 5/ " Nominal
H - 5/ " (Heavy Duty)
6 - 3/ "
0 - Solid Bar
2
8
8
4
Brake Type
B - B-Lock
S - Single Anchor Pin (SAP) Service
Only
F - Std. Service - Dual Anchor Pin
(DAP) - BSFB brand
P - Pin Style - BSFB brand
X - HXS / XLII - Dual Anchor Pin
(DAP) - BSFB brand
D - Air Disc Brake
- (Dash) - No Brake Shoes
H - Hendrickson Std. Service - Dual
Anchor Pin (DAP)
N - Hendrickson Pin Style
E - Hendrickson HXS (DAP)
C - Cams Only, No Brake Shoes
Brake Adjusters
B - Bendix
G - Gunite
H - Haldex
- (Dash) - No Brake Adjusters
Chambers
B - Bendix
H - Haldex
M - MGM
K - Knorr - Air Disc Brake Only
T - TSE
- (Dash) - No Chambers
READY TO ROLL® (RTR®) Packages
1 - 10-stud, hub-piloted - 1st Digit
- (Dash) - No Hubs - 1st Digit
Brake Size
1250 - 121/ " × 5" brakes
1254 - 121/ " × 51/ " brakes
1274 - 121/ " × 71/ " brakes
1585 - 15" × 85/ " brakes
1650 - 161/ " × 5" brakes
1670 - 161/ " × 7" brakes
1685 - 161/ " × 85/ " brakes
1610 - 161/ " × 10" brakes
1870 - 18" × 7" brakes
2080 - 20" × 8" brakes
430_ - 430mm Air Disc
16N_ - 161/ " Spider only
15N_ - 15" Spider only
12N_ - 121/ " Spider only
---- (4 Dashes) - No Brakes
4
4
2
4
2
V - HVS 3-yr - 2nd Digit
L - HLS 5-yr - 2nd Digit
7 - HXL7 7-yr - 2nd Digit
U - HUS 7-yr - 2nd Digit
P - ConMet PreSet - 2nd Digit
- (Dash) - No RTR or 1-yr Std Service
- 2nd Digit
8
2
Tire Inflation
T - TIREMAAX® or TIMS
P - MTIS / PSI Prepped
V - Axle Vent Only
3 - 3-Hole Prep Only
M - Military Set-up
- (Dash) - None
Axle Track
### - Track Length (inches) 1st 3
Digits
# - Track Length (1/ ") 4th Digit
8
2
2
8
2
2
4
Cam Length
S - Standard. Short Length (175/ ")
M - Standard. Medium Length (205/ ")
L - Standard. Long Length (233/ ")
X - Special Length (Non-Standard.)
- (Dash) - No S-Cams
8
Auto Lube
L - Lube System - Fittings Installed
- (Dash) - None
Spider Type
B - Bolt-on Spider
F - Flange Only
W - Weld-on Spider
T - Torque Plate for Air Disc Brake
- (Dash) - No Spider / No S-Cams
8
4
Cam Option
C - Cam Tube
B - RM Cartridge Bushing
- (Dash) - No Special Cam Options
ABS Option
B - ABS Mounting Bracket Only
S - ABS Sensor Installed
- (Dash) - No ABS Sensors / Brackets
10
C - Cast Drum - 3rd Digit
F - Fused Drum - 3rd Digit
- (Dash) - No Drums - 3rd Digit
315 - 3-spoke, 15" wheel - all 3
Digits
Digits
Digits
Digits
RTR Lube
G - Grease
F - Syn. Semi-Fluid Grease
O - 80W - 90 Oil
S - SAE 50 or 75W - 90 Synthetic
- (Dash) - None
Dust Shields
D - Dust Shield Included
- (Dash) - None
L980 B
L980 B
11
Lift Suspensions for Pusher and Tag Axles
(Single Wheel)
Liquid and Dry Bulk Tanks, Pusher Axles
(ahead of Fixed Drive Axles)
On Hwy
On Hwy
On / Off Hwy
D10
BENT
Stub Axles
D10 / T24 /
HN / HP /
K30
Conveyor Systems, Wood Chippers, Log
Chippers, Special Low Body Vehicles,
Self-Steer Axles
Lift axles on Truck Applications
On Hwy
Mining, Oil Field, Low Speed Transport
(Steel yards, Marinas, etc.)
T24
A65
On / Off Hwy
On / Off Hwy
K30
A45
Mining, Oil Field, Logging,
Off-Road
5" round
5" round
LDA
Walking beam
Mechanical Spring
Specialized
Trunnion Mount
Solid Mount
Air Ride
5" round
5" round
N/A
Up to 20,000 Up to 20,000
HN / HP / T24 - 11,000 to 12,500 - Based on Spindle /
Wheel End
K30 - 12,500 to 15,000 - Based on Spindle / Wheel End
D10 - 5,000 to 6,000 - Based on Spindle / Wheel End
N/A
Up to 20,000 Up to 20,000
N/A
N/A
N/A
N/A
N/A
N/A
5" round
N/A
N/A
Up to
65,000
Up to
45,000
N/A
N/A
N/A
Mechanical Spring
10,000 to 12,000- based on Wheel End
Up to 22,500 Up to 23,000
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Up to 30,000
Up to 27,000
Up to 30,000
Up to 25,000 Up to 25,400
N/A
N/A
N/A
N/A
N/A
Up to 25,000 Up to 25,400 Up to 27,000
Up to 25,000 Up to 25,400 Up to 27,000
Up to 22,500 Up to 23,000 Up to 25,000
Up to 25,000 Up to 25,400 Up to 27,000
Up to 22,500 Up to 23,000 Up to 25,000
Up to 25,000 Up to 25,400 Up to 27,000
Up to 22,500 Up to 23,000 Up to 25,000
N/A
SOLID
BAR
5" round
5" round
Mechanical Spring
Not allowed
Up to 22,500
N/A
N/A
N/A
N/A
N/A
Up to 22,500
Up to 22,500
Not allowed
3/4”
WALL
Air Ride
5" round
5" round
Air Ride
Mechanical Spring
LDA / Solid
LDA / Solid
LDA
Walking beam
Mechanical
Spring, Walking
Beam, Solid
Mount
LDA
Air Ride
Trunnion
5" round
Air Ride
5/8”
HD
WALL
Up to 25,000 Up to 25,400 Up to 27,000
5/8” NOM.
WALL
AXLE BEAM CAPACITIES
A45 / A65
Heavy Haul, Trunnion Applications,
typically very long track or very short track
lengths
On / Off Hwy
K22
Up to 22,500
5" round
Up to 22,500
Not allowed
Mechanical Spring
5" round
5" round
Not allowed
On / Off Hwy
HP (P22)
Air Ride
Up to 22,500
5" round
Mechanical Spring
5" round
Dry Van, Reefers, Vocational (Flats,
Dumps, Autohaulers, Tanks, Lowboys)
On / Off Hwy
HN (D22)
1/2” NOM.
WALL
AXLE
DIAMETER
SUSPENSION
Dry Van, Reefers, Vocational (Flats, Dumps, Mechanical Spring
Autohaulers, Tanks, Lowboys), super
singles w / offset wheels
Air Ride
APPLICATION
SPINDLE GRAPHIC
RECOMMENDED
AXLE USE
SPINDLE
TYPE
AXLE BEAM CAPACITIES IN POUNDS (unless otherwise noted)
Table A
BEARING INFORMATION
The table shown below provides a summary of
the bearings used on Hendrickson trailer axles.
Information also included in this table are bearing
industry standard numbers and dimensional
information.
BEARING
SURFACE
INDUSTRY
STANDARD
NUMBER CUP
INDUSTRY
STANDARD
NUMBER CONE
OVERALL
WIDTH
(in.)
OUTER
DIAMETER
(in.)
INSIDE
BORE
(in.)
Inner
772
787
1.875
7.125
4.125
Outer
6535
6580
2.125
6.375
3.500
Inner
892
896
2.250
9.000
5.375
Outer
6535
6580
2.125
6.375
3.500
Inner
28920
28995
1.000
4.000
2.470
Outer
25523
25580
1.063
3.625
1.750
HN (D22)
Inner
HM218210
HM218248
1.575
5.787
3.542
K22, S22
Outer
HM212011
HM212049
1.500
4.813
2.625
Inner
HM518410
HM518445
1.563
6.000
3.501
Outer
Inner
HM518410
752
HM518445
759
1.563
1.875
6.000
6.375
3.501
3.500
Outer
742
740
1.750
5.909
3.188
Inner
592A
594A
1.563
6.000
3.750
Outer
572
580
1.438
5.512
3.250
AXLE
MODEL
A45
A65
D10
HP (P22)
K30, S30
T24
Table B
12
L980 B
BRAKE SETUP CONFIGURATIONS
The use of different types of suspensions sometimes
require that the brake cams, air chambers, etc. be
located in a position off the horizontal centerline of
the axle. For straight axles, the axle can be clocked
to any position within 10 degrees of the horizontal
centerline (figure 6). Drop center axles and axles
with tire inflation systems require the customer to
specify the orientation of the drop center portion of
the axle as well as the orientation of the brake cam.
A typical trailer axle is set up so that the horizontal
axis passing through the axle assembly will also
pass through the centerline of the brake cam. In a
typical setup (figure 4 and 5), the brake cams are
set to the front or rear of the axle with the slack
adjuster pointed up away from the road for “Cam
Forward Orientation” (figure 5) or down towards
the road for "Cam Rearward Orientation" (figure 4).
Using these two orientations allows the cam to
rotate (open) in the same direction of travel as the
tires. Using an opposite orientation (i.e. cams to
the rear with the slacks pointing up away from the
road) causes the cam to open against the rotation
of the tires. This condition is known as “cam
opposite,” or “reverse cam rotation.” For more
information on reverse cam rotation, refer to the
“cam same vs. cam opposite” section of this
guideline.
10
figure 6
Vehicle
Front
Cam rearward (air under)
figure 4
Cam Forward (Air Over)
figure 5
L980 B
13
VALUE ADDED OPTIONS
CAM TUBES
Hendrickson Trailer Suspension Systems works
closely with fleets and trailer manufacturers to
create products that offer versatility in application,
added reliability and reduced costs. These value
added options are enhanced design features which
reduce life cycle costs.
Cam tubes cover the brake camshaft from the brake
spider to the cam support bracket and are filled with
grease. Cam tubes often extend the life of seals and
bushings used on trailer axle brake spiders and cam
brackets, as well as, reducing vibration in the axles.
Cam tubes are particularly popular in the Northern
United States and Canada where they are used to
help keep road salts and other chemicals from
getting to the bushings and seals.
WHEEL END OFFERINGS
Hendrickson Trailer Suspension Systems offers a
variety of wheel-ends to fit your needs.
EXTENDED SERVICE BRAKES (HXS®)
Extended service brakes (HXS®) are available to
help extend life before your first brake job.
— Hendrickson Long-life System™ (HLS™) uses
semi-fluid grease and comes with a five-year
limited warranty
ABS
— Hendrickson Value System™ (HVS™) uses an
oil bath method and comes with a three-year
limited warranty
Since January 1998, the U.S. Government has
mandated anti-lock brake systems on new semitrailers. Hendrickson offers trailer axles with ABS
mounting brackets, ABS tone ring hubs and ABS
sensor leads.
— Hendrickson also offers a ConMet® Preset Hub
on their trailer axles to provide extra versatility
in their wheel-end offerings.
TIREMAAX® TIRE INFLATION SYSTEMS
Hendrickson offers two TIREMAAX tire inflation
systems to suit your tire inflation needs.
TIREMAAX CP – Constant pressure controlled by
regulator
TIREMAAX EC – Controlled by an electronic ECU
TIRE INFLATION PREP
Hendrickson trailer axles can be prepped for use
with tire inflation systems. Axle spindles come
without plugs installed and axles are pre-drilled
to accept the hardware and fittings of various
systems offered. Please check with your CSR for
available system preps.
14
L980 B
GROSS AXLE WEIGHT RATING
AND AXLE BEAM RATING
AXLE BEAM RATING
The axle beam ratings provided in this book are the
load carrying capacity of the axle tube and spindle
assembly only and are based on several different
factors. Suspension type and suspension mounting
centers; axle wall thickness and track; wheel type
(dual or single), and offset dimension for a single
wheel application are required.
GROSS AXLE WEIGHT RATING
This section will help vehicle manufacturers
determine the load carrying capacity of a
Hendrickson trailer axle with easy to use
reference charts, as well as explaining how the
axle weight rating is determined. The gross axle
weight rating (GAWR) is the load carrying capacity
of an axle and is determined by the lowest rated
component in the assembly.
DIMENSIONAL REQUIREMENTS FOR AXLE
BEAM RATING
SUSPENSION TYPE AND SUSPENSION MOUNTING
CENTERS
If you are unsure how to use the charts in this
section, or your axle is not included in the charts,
contact Hendrickson. To obtain a written application
approval of a GAWR, a request can be submitted
via the Internet at www.hendrickson-intl.com. An
axle rating provided by Hendrickson will only cover
the axle beam and brake system, as these are the
components that Hendrickson manufacturers. Any
components not manufactured by Hendrickson such
as wheel ends, tires, vehicle, etc. should have ratings
provided by the component or vehicle manufacturer.
It is important to understand the difference between
mechanical spring centers or air suspension beam
centers and vehicle frame centers as many people
confuse these dimensions. The mechanical spring
centers distance is the distance from the centerline
of the mechanical spring to the centerline of the
other mechanical spring (figure 7).
figure 7
L980 B
15
In air suspensions applications the “air suspension
beam centers” are defined as distance from the
centerline of the axle connection to the other
centerline of the axle connection (as shown
in figure 8).
Air Spring
Centers
Beam
Centers
Track
Air Spring
figure 8
Vehicle frame centers relate to the frame, or chassis
of the vehicle and not to the mechanical spring
centers or air ride beam centers. It is important to
provide the correct dimension when requesting a
rating for a Hendrickson Trailer Axle.
figure 10
AXLE TRACK
WALL THICKNESS
For dual wheels, track is measured from center to
center of the dual wheel set-up. For axles using
single tires with a zero offset wheel, track is
measured from the center of the tire or wheel to
the center of the other tire or wheel.(figure 10)
Standard trailer axle product offerings are
available with nominal wall thicknesses of
½ , 5/8 and true / full wall thicknesses of 5/8 and ¾
inches.
NOTE: The ½ inch nominal wall thickness trailer axle
is approved for mechanical spring
suspensions only.
If the application uses a single wheel that is either
inset or outset the rating is affected. The effects are
described in detail later in “Beam Rating Charts
Single Offset Wheels.”
Wall Thickness
figure 9
16
L980 B
BEAM RATING - SUPER SINGLE OFFSET
TIRES
The use of a super-single outset tire configuration
moves the load point out away from the center of the
vehicle, which increases the bending load in the axle
and also decreases the bearing life. To determine the
rating for an axle that uses an outset wheel, contact
Hendrickson engineering for assistance.
The use of offset tires can affect the axle rating. For
applications where dual offset wheels are utilized or
an application that uses a zero offset super-single
tire, the axle rating will not be affected. However,
the use of an outset or inset super-single tire does
change the way in which the axle is loaded and
therefore affects how the axle will be rated.
NOTE: Outset single wheel – Max allowable outset
is 2 inches and outset applications must use
a HP (P22) spindle. Offset (outset) wheels
are not approved on HN (D22) spindle
applications.
Inset super-single tires move the point at which
the axle is loaded inboard towards the center of the
vehicle. Using this type of wheel will not affect the
axle beam rating, but can significantly reduce the
life of the outer bearing. To determine the effect that
this will have on a particular axle application,
contact Hendrickson.
DUAL OFFSET WHEELS
OUTSET SINGLE WHEEL
Brake Drum (ref)
Brake Drum (ref)
ZERO OFFSET SUPER SINGLE WHEEL
INSET SINGLE WHEEL
Brake Drum (ref)
Brake Drum (ref)
figure 11
L980 B
17
AXLE BEAM RATING STRAIGHT AXLES
The charts at the end of this section should be used
to determine an axle beam rating for Straight Axles
Only, assuming a particular suspension mounting
center dimension. The graph provides ratings for
HN (D22), HP (P22) and T24 model axles in all
available wall thickness for use in a mechanical
spring or air suspensions.
In order to use the graph, the following is needed:
• Axle wall thickness
• Nominal axle rating
• Suspension mounting centers
• Air spring centers (air suspension only)
• Suspension pivot to axle center
(air suspension only)
• Suspension pivot to air spring center
(air suspension only)
• Axle overhang
With all of this information, the axle beam rating can
easily be determined from the beam rating graph to
follow.
NOMINAL BEAM RATINGS
For the purposes of calculating straight axle beam
ratings, the nominal axle ratings are as follows:
Nominal Axle Ratings
/2" Wall
22,500 lbs
/8" Wall
25,000 lbs
/4" Wall
27,000 lbs
1
5
3
Table C
18
L980 B
EXAMPLE 2
To find the axle beam ratings for an application that
uses a mechanical spring suspension with an axle
that has a 5/ inch wall thickness and a 711/ inch
track length with suspension mounting centers of
37 inches. Axle beam rating can be determined
as follows:
MECHANICAL SPRING SUSPENSIONS
To calculate the axle beam rating on mechanical
spring suspension, use the following technique:
8
1. Determine the axles nominal rating from
(TABLE C on page 18).
2. Determine the suspension mounting centers. For
a mechanical spring suspension, the suspension
mounting centers are equal to the spring centers.
3. Determine the axle track.
4. Determine the axle overhang by subtracting the
mounting centers from the axle track and
dividing by two.
5. Refer to the “Hendrickson Trailer Axle Beam
Ratings” graph to determine the percentage of
nominal rating (page 22).
6. Multiply the axle nominal rating by the percent
of nominal rating.
1 - Nominal rating 5/ inch inches wall axle =
25,000 pounds
2 - Suspension mounting centers = 37 inches
3 - Axle track = 711/ inches
4 - Axle overhang = 1/ x (711/ - 37) = 171/ inches
5 - From graph, percent of nominal rating =
100 percent
6 - Axle beam rating = 25,000 x (1) = 25,000
pounds
8
2
2
EXAMPLE 1
To find the axle beam rating for an application that
that has a ½ inch wall thickness and a 711/ -inch
341/ inches. Axle beam rating can be determined
as follows:
2
2
1. Nominal rating 1/ inch wall axle = 22,500
pounds
2. Suspension mounting centers = 341/ inches
3. Axle track = 711/ inches
4. Axle Overhang = 1/ x (711/ - 341/ ) = 181/
inches
5. From graph, percent of nominal rating =
95 percent
6. Axle beam rating = 22,500 x (.95) = 21,375
pounds
2
2
2
2
L980 B
2
2
2
2
19
2
4
EXAMPLE 1
AIR RIDE SUSPENSIONS
To find the axle beam ratings for an application that
uses an air suspension with an axle that has a 5/
inch wall thickness and a 711/ inch track length
with front mounting centers of 35 inches, rear
mounting centers of 30 inches, B = 20 inches and
C = 35 inches. Axle beam rating can be determined
as follows:
For air suspensions, axle ratings are based on the
location of the suspension attachment relative to the
axle spindles. The suspension location is defined as
the effective suspension centers.
8
2
The effective suspension centers are determined using
the front and rear suspension mounting locations to
determine where the effective suspension center
crosses the axle center (figure 12).
1. Nominal rating 5/ inch wall axle = 25,000
pounds.
8
To calculate the axle beam rating on an air
suspension, use the following technique:
(Refer to figure 12)
2. Calculate dimension A
[35
1. Determine the Nominal Rating
[
4. Calculate effective beam centers = 35 - (1.43 ×
2) = 32.14 inches
]
× 1/ 2 = A
5. Axle overhang = 1/ × (71.5 - 32.14) = 19.68
inches
2
3. Calculate dimension D
(B / C) × A = D
Ratings” graph to determine the percentage of
nominal rating (page 22)
4. Calculate efffective beam centers
Front
Mounting
Centers
- (D × 2) =
]
30 × 1/ 2 = 2.5 inches
3. Calculate dimension D = (20/35) × 2.5 = 1.43
inches
2. Calculate dimension A
Front
Rear
Mounting - Mounting
Centers
Centers
-
EFFECTIVE
BEAM
CENTERS
7. Multiply the axle nominal rating by the percent of
nominal rating
NOTE: The use of trailer axles with a 1/ inch nominal
wall thickness in air suspensions requires
approval from Hendrickson application
engineering.
2
5. Calculate the overhang = 1/ × (track - effective
beam centers)
2
Rating graph to determine the percentage of
nominal ratings” (Refer to figure 13 on page 22)
NOTE: The graphs on the following page for axle
beam ratings assume the axle uses standard
dual offset wheels, or single wheels with no
offset and are for on-highway applications
only.
7. Multiply the axle nominal rating by the percent of
nominal rating
20
L980 B
AIR SUSPENSION DIAGRAM
AXLE CENTER
FRONT
MOUNTING
CENTERS
REAR
MOUNTING
CENTERS
EFFECTIVE
BEAM
CENTERS
A
D
B
C
figure 12
L980 B
21
HENDRICKSON TRAILER AXLE BEAM RATINGS
FOR AXLES UTILIZING HN, HP AND T24 SPINDLES
100%
98%
96%
94%
92%
90%
88%
86%
84%
82%
80%
78%
76%
74%
72%
70%
68%
66%
64%
62%
60%
28.5
28.0
27.5
27.0
26.5
26.0
25.5
25.0
24.5
24.0
23.5
23.0
22.5
22.0
21.5
21.0
20.5
20.0
19.5
19.0
18.5
18.0
17.5
17.0
16.5
58%
Axle Overhang (inches)
figure 13
FOR D10, K30, A45 AND A65 WITH MECHANICAL SPRING SUSPENSIONS
AXLE
MODEL
STANDARD
TRACK LENGTH
(inches)
SPRING
CENTERS
(inches)
BEAM
RATING
(lbs.)
D10
74
48
12,000
K30
71
38
30,000
A45
86
48
45,000
A65
88
50
65,000
Table D
22
L980 B
AXLE BEAM RATING –
DROP CENTER AXLES
The charts at the end of this section should be used
to determine an axle beam rating for drop–center
axles only. The graph provides ratings for HN, HP
and T24 model axles in all available wall thickness
for use in a mechanical spring or air suspensions.
In order to use these graphs the following is needed:
•
Axle wall thickness
•
Suspension mounting centers
•
Axle overhang
With this information, the axle beam rating can easily
be selected from the appropriate graph.
To calculate the axle beam rating for a drop–center
axle, use the following technique:
1. Determine the axle wall thickness.
2. Determine the suspension mounting centers.
3. Determine the axle track.
4. Determined the axle overhang by subtracting
the mounting centers from the axle track and
dividing by two.
5. Refer to the “Hendrickson Trailer Drop – center
Axle Beam Ratings” graph to determine the axle
rating A (figure 14 on page 24).
EXAMPLE 1
To fine the axle beam ratings for an application that
that had a 5/ inch wall thickness and a 711/ inch
341/ inches. Axle beam rating can be determined as
follows:
8
2
2
1
2
3
4
-
Axle wall = 5/ inch
Suspension mounting centers = 341/ inches
Axle track = 711/ inches
Axle overhang = 1/ x (711/ - 341/ ) = 181/
inches
5 - Axle beam rating = 20,000 pounds
L980 B
8
2
2
2
2
2
2
23
HENDRICKSON DROP CENTER AXLE
BEAM RATINGS
FOR HN (D22), HP (P22) AND T24 WITH
MECHANICAL OR AIR RIDE SUSPENSIONS
Axle Overhang (in)
5/8 inch Wall–Spring
3/4 inch Wall–Spring
5/8 inch Wall–Air Suspension
3/4 inch Wall–Air Suspension
figure 14
24
L980 B
S-CAMS AND BRAKES
The following section is to be used to aid in the
selection of the appropriate brake for the application.
Each brake approval shown is based on gross axle
weight rating (GAWR), static loaded radius (SLR),
air chamber size, brake adjuster length (S-cam
brake only) and the brake lining material.
SERVICE BRAKE REQUIREMENTS
Hendrickson offers a variety of sizes and models of
brakes. Federal law requires all brakes / axles meet
the performance standard set by FMVSS-121
regulation. FMVSS-121 is applicable to vehicles
that travel more than 55 MPH and brakes that
are rated less than 29,000 pounds.
BRAKE TYPE
Hendrickson Trailer Axles can be ordered with
double anchor pin (DAP) S-cam drum brakes,
or air disc brakes. Each of these brakes can be
configured to meet a variety of performance and
packaging considerations (figure 15).
Canadian law requires brakes meet CMVSS-121.
CMVSS-121 requires that all brakes meet a draw
bar requirement. If a trailer brake assembly will be
used in Canada, it must meet Canadian draw bar
certification requirements.
The original equipment manufacturer (OEM) has
the responsibility of ensuring that their trailers
meet the certification requirements. For additional
information regarding brake certifications contact
Hendrickson engineering.
Air Disc Brake Assembly (ADB)
Double Anchor Pin Drum Brake Assembly (DAP)
figure 15
L980 B
25
CAM SAME VS. CAM OPPOSITE
Installation in which the camshaft rotation is opposite
of wheel rotation can cause brake noise, chatter and
wheel “hop.” Only “cam same” installations meet the
requirements of these guidelines. However, some
suspension systems do not have enough clearance
to allow the axle to be mounted with “cam same.”
Approval for “cam opposite” uses is rarely granted,
but may be requested on an individual basis by
submitting a Hendrickson Trailer Spec Form to
Hendrickson engineering.
To ensure safe operation and maximum durability of
parts such as brake linings and tires, it is necessary
to position and install the axle with the proper cam
rotation. It is required that the axle assembly be
installed so that in the forward direction of the vehicle
the cams rotate in the same direction as the wheels.
When the brake is installed in this configuration it is
known as “cam same.” When the wheel rotation is
opposite of the cam rotation, the brake is considered
“cam opposite.” Examples of “cam same” are shown
below (figure 16).
Failure to obtain application approval or the use
of Hendrickson brakes or their components in
non-approved applications will void Hendrickson's
warranty coverage.
Wheel Rotation
EXAMPLES OF “CAM SAME”
Cam Rotation
Wheel Rotation
Cam Rotation
figure 16
26
L980 B
AXLE STRUCTURAL RATING VS. BRAKE
PERFORMANCE RATING
The gross axle weight rating (GAWR) must be the
value of the lowest rated component of the axle
assembly. This includes all weight rated components
of the axle such as the brake components, brake
lining, tires, hubs and drums. It is common practice
to have an axle with an axle beam rating at 23,000
pounds used in conjunction with a brake
configuration with a brake rating at 20,000
pounds. In this case, the GAWR would be that
of the lowest rated component or 20,000 pounds.
The axle beam rating considers the structural
strength of the axle and is essentially the load
carrying capability of the axle. Specifically, it is how
much weight the axle can carry (as shown below).
The brake rating is the maximum load the brake is
capable of stopping, while meeting FMVSS-121
requirements. In short, it is the stopping power. Brake
rating is dependent on brake size, lining type, brake
power and tire static loaded radius (as shown below
in figure 17).
Axle Beam Rating – Load carrying
Brake Rating – Stopping power
figure 17
L980 B
27
S-CAM DRUM BRAKE RATINGS
The performance of a S-cam drum brake is
determined by the brake diameter, brake width,
input torque, lining type and the static loaded radius
of the tire. The nomenclature used to identify the size
of the brake is to specify the diameter of the brake by
the width of the brake. For example, a 16.5x7 brake
refers to a 16.5-inch diameter brake that has a width
of 7 inches. As shown in the figure below. Brake
certification is available from Hendrickson
engineering.
Brake Drum
Diameter
Brake Lining
Width
figure 18
28
L980 B
BRAKE CHAMBER BRACKETS AND
SLACK ADJUSTER CLEARANCE
Hendrickson has two styles of brake chamber brackets:
standard and high rise (figure 19). Slack selection
depends on the brake chamber bracket selected. On
12¼ inch brakes, if you select the standard or high
rise brake chamber bracket, you must get curved
slacks for adequate clearance between the slack
body and axle tube.
Curved Slack
Slack Type 30 Only
110°
88°
Slack 30/30
Tube
Tube
High Rise Brake Chamber Bracket
Standard Brake Chamber Bracket
figure 19
L980 B
29
www.hendrickson-intl.com
Trailer Commercial Vehicle Systems
250 Chrysler Drive, Unit #3
Brampton, ON Canada L6S 6B6
905.789.1030
Fax 905.789.1033
L980 Rev B 08-11
Trailer Commercial Vehicle Systems
2070 Industrial Place SE
Canton, OH 44707-2641 USA
866.RIDEAIR (743.3247)
330.489.0045
Fax 800.696.4416
Information contained in this literature was accurate at the time of publication. Product changes may have been made after the copyright date that are not reflected.
© 2011 Hendrickson USA, L.L.C. (U.S. Rights) Hendrickson International Corporation (Rights Outside U.S.) All Rights Reserved
Hendrickson Mexicana
Av. Industria Automotriz #200
Parque Industrial Stiva Aeropuerto
Apodaca, N.L., México C.P. 66600
+52 (81) 8288. 1300
Fax +52 (81) 8288. 1301
Printed in United States of America

L980 - Trailer Axle Application Guide| REV B

Transcription

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