Catalog

services
One Location, Multiple Services…
Our manufacturing process involves casting and
compression molding of K•Prene® urethane.
This means Acrotech can produce parts
cost-effectively, compared to machining or
injection molding. Acrotech’s stocked
products include several industry-specific
parts in addition to sheets, round rods,
bars, Versa Rolls™, several types of
bumpers and much more. These items are
stocked in 6 different durometers/hardnesses
in a variety of sizes. We also offer custom
molding of K•Prene® urethane; including
mold construction, production of metal inserts
and secondary machining.
2
The casting process of polyurethane
allows Acrotech to cost-effectively
produce part volumes ranging from
one to one hundred thousand, and
can range in size from less than
a cubic inch to over
400 pounds!
Andy Oliver –
President Acrotech, Inc
Molds are designed and
produced in-house allowing
us to control every detail.
Shafts and hubs up to 8
feet long can be recycled by
removing worn-out material
and recovering with quality
K•Prene® urethane.
Any size or shape insert can
be produced by our state-ofthe-art machine shop.
Specialty Processing–
Different durometers can
be bonded together.
Our machine shop offers the
capabilities for secondary
machining to tight tolerances
and profiling.
Several K•Prene®
formulations are FDA
Approved for use in food
processing and medical
industry applications.
K•Prene® polyurethane
can be cast onto the metal
inserts and achieve excellent
adhesion.
For less demanding
needs - AcroKast® offers the
rigidity of a structural plastic
and the cost-effectiveness
of liquid casting.
Need a new part?
Want to improve an existing part?
Need one part for maintenance?
Need one thousand parts for production?
This check valve ball and valve seat are made
in several sizes to control flow in pump
applications. Tremendous resistance to
abrasion is required, along with the ability
to withstand significant pressure. K•Prene®
has surpassed the stainless steel components
previously used!
www.acrotechinc.com
Fax: 651-345-3759
From conception to completion, Acrotech Inc. can help with
design considerations, material formulation, secondary operations
and mold design and manufacture!
Because of low mold costs compared to other molding procedures,
custom molding with K•Prene® can be very cost effective for
prototype through production. The molds are generally machined
from steel or aluminum, depending on the application, or can
even be cast from a flexible mold material using an existing part
as a master.
A long-time customer’s
experience with Acrotech Inc.
800-345-0583
Custom Molding
custom
“As a world leader in the manufacturing
of solid pumping systems, it is critical for
V-Ram to have the best materials in our
systems. We have found that K•Prene®
urethane balls and valve seats will easily
handle the most severe abrasion requirements
we encounter! Thanks for your part in
helping V-Ram establish and maintain the
industry standards.”
Sincerely,
David Olson – President, V-Ram Solids
Custom Machining Capabilities To Your Specs!
Acrotech’s modern equipment capabilities offer custom machining from start to finish of many materials such as:
Cold Finish and Hot Rolled Steel, Stainless Steel, Aluminum, Brass, Bronze, Tool Steel, Alloy Steel, and Composites such
as Delrin, UHMW, Acetal etc.
3
contents
Acrotech Services..................................................... 2
Custom Molding & Machining.................................. 3
Technical Information....................................... 4 – 10
What is K•Prene®?............................................................
Stocked Inventory Dimension/Tolerances Chart............
Characteristics of K•Prene®.............................................
Physical Properties of K•Prene®.....................................
Compression & Deflection Charts of K•Prene®...........
Shape Factor & Modulus of Elasticity...........................
Properties...................................................... 11 – 12
Environmental Properties of K•Prene®.........................
Oil, Chemical and Solvent Resistance of K•Prene®.....
Machining/Applications of K•Prene®.............. 13 – 14
Application Chart of K•Prene®........................................
Metal Forming....................................................... 15
Roll Bending.................................................. 16 – 21
Benefits...............................................................................
Models................................................................................
Art of Bending...................................................................
Accessories.........................................................................
K•Prene® Products........................................ 22 – 29
Rods, Square & Rectangular Bars..................................
Precision Cast Sheets.......................................................
Metric Sized Products......................................................
Tubes/Springs & Caps.....................................................
Washers Seals & Gaskets................................................
Bumpers.............................................................................
Versa Roll™ .................................................. 30 – 31
Custom Products................................................... 32
Metal Backed Sheets........................................................
Solid K•Prene® Urethane Balls.......................................
FDA Dry Food Approved Urethane................................
K•Prene® Press Brake Dies.................................... 33
Acroform Inserts............................................ 34 – 35
Acro-Hyde™ for Press Brake Forming..........................
Punch Strippers..................................................... 36
SurStrip™ Punch Strippers..............................................
Wiedeman, Piranha & Di-Acro Punch Strippers..........
Urethane Parts for Piranha Ironworkers.......................
Custom Products................................................... 39
Tool Holsters .....................................................................
Adhesive & Tape...............................................................
Performance Products........................................... 40
Spring Rubbers..................................................................
Wood Industry Products................................ 41 – 43
Drive Wheels......................................................................
Powerfeed Replacement Tires.......................................
Press Fit Tires....................................................................
Recovery of OEM Hubs & Shafts...................................
OEM Replacement Parts.................................................
Roller Manufacturing & Recovering...............................
Terms, Conditions & Ordering Information.............. 44
What is K•Prene®?
K•Prene® is the trade name for the various grades of urethane
elastomers formulated specifically by Acrotech. The K•Prene®
formulations were designed to “fill the gaps” between rubbers with
characteristic resilience and structural plastics with characteristic
hardness. The result is a functional toughness matched by no other
available material in either natural or man-made form.
K•Prene® urethane elastomers have higher oil and solvent resistance
and better thermal stability than most general purpose rubbers and
plastics. They have greater abrasion and tear resistance in combination with increased load bearing capacity than do the neoprene or
natural rubbers. Their extensibility and impact strength are greater
than those of most plastics materials.
Stocked Inventory
Dimension Tolerances
These tolerances cover all stocked products, except where
noted. Please advise factory if closer tolerance is required.
Sheets
Length: +1/4 - 0
Width:
+1/4 - 0
Thickness:+/-2% or +/-.010 (whichever is greater)
Round, Square & Rectangular Bars
Length: +1/4 - 0
O.D. +/-2% or +/-.010 (whichever is greater)
K•Prene®, the Unequaled
Urethane!
We provide standard polyurethane materials from 10 Shore A
to 85 Shore D Durometer. Our standard grades are polyether
thermosets. We also produce polyesters and FDA materials.
Our K•Prene® sample
chains can be very
helpful. Be sure
to request one!
Ordering information:
www.acrotechinc.com
800-345-0583
Custom formulations are available!
Prices subject to change without notice.
4
Acrotech catalog Copyright 2013 by Acrotech Inc. All rights reserved. Printed in the U.S.A.
technical info
TDI and MDI chemical structures, both are available in
polyether and polyester formulas.
We manufacture over 25 formulations on a daily basis.
Broad hardnesses ranging from 10 Shore A to
85 Shore D Durometer.
6 standard colors, custom colors are available.
Phenolics
140
Acrylics
130
Nylons
120
100
90
70
50
85
65
55
95
90
45
Rubber
80
Shoe Heel
70
60
Tire Cord
40
Rubber
30
20
Selecting K•Prene® for
limitless applications
Urethane provides a unique combination of properties.
These include: high load-bearing capacity; toughness;
hardness; abrasion resistance; and oil and ozone resistance.
K-600A
K-900A Blue 90A Durometer: Withstands
consistent flexing. Good cut resistance. Good
load-bearing capacity. Recommended for most
applications where large radius bends or difficult
bends require large deflection or flow of K•Prene®.
Maximum recommended deflection 25%.
50
10
K-400A
K-800A Orange 80A Durometer: Good tear
strength, abrasion resistance and excellent flex life.
Good low temperature properties. Requires lower
tonnage. Withstands greater deflection. Should not
be used for material heavier than 20 gauge mild
steel, except in special applications. Maximum
recommended deflection 35%.
Bowling Ball
75
Durometer A
K•Prene®
Urethane
Polystyrenes
110
Durometer D
Rockwell R
Plastics
150
Fax: 651-345-3759
Hardness Scale
K-600A Black 60A Durometer: High coefficient
of friction and excellent tensile strength makes this
material a good choice for feed rolls and many other
industrial applications.
K-800A
K-950A Red 95A Durometer: High tensile strength
for higher blank-holding pressure. High load-bearing
capacity. Best tear strength. Best cut resistance. Best
abrasion/wear resistance. Recommended for most
applications. Maximum recommended deflection 15%.
K-750D Brown 75D Durometer: Great loadbearing capacity. Excellent machinability and
abrasion resistance. Offers great rigidity, yet will
deflect. Maximum recommended deflection 5%.
K-900A
K-950A
www.acrotechinc.com
Hundreds of other formulations are available to meet your
most demanding application.
K-400A Yellow 40A Durometer: A low durometer
material with a high coefficient of friction that will
satisfy countless industrial needs such as rollers,
bumpers, etc.
800-345-0583
Stocked
Durometers/Hardnesses
K•Prene® Urethane
Characteristics
K-750D
5
technical info
Physical Properties of K•Prene® Urethane
ASTM
STD.
Hardness,
Shore A
Shore D
Tensile Strength, (PSI)
Elongation, %
100% Modulus, (PSI)
300% Modulus, (PSI)
Tear Strength, Split, lb./in.
Tear Strength, Die C, lb./in.
Abrasion Resistance,
NBS Index
Impact Resistance
(Izod) ft. lb./in.
Compression Set,
Method B, %
Compression Set,
Method A, %
Bashore Resilience, %
Bell Brittle Point, F.
Coefficient of Friction
Compression Modulus,
5%, (PSI)
Compression Modulus,
10%, (PSI)
Compression Modulus,
15%, (PSI)
Compression Modulus,
20%, (PSI)
Compression Modulus,
25%, (PSI)
Specific Gravity
6
D-2240
D-2240
D-412
D-412
D-412
D-412
D-470
D-624
K-400A
K-600A
K-800A
K-900A
K-950A
K-750D
40
—
500
510
90
200
20
80
60
—
3500
530
280
390
25
180
80
—
3000
800
400
625
70
400
90
43
5500
430
1100
2200
90
600
95
50
6500
380
1800
4300
130
700
—
75
9700
250
4900
—
115
770
D-1630
45
110
175
300
475
D-256
—
—
—
—
—
5
D-395
38
6
45
30
36
—
D-395
—
—
D-2632
8
32
D-2137
—
-70
D-1894
—
60
<-130
0.55
—
42
<-80
0.45
—
40
<-80
0.30
15
44
<-83
0.11
D-575
13.3
40
150
272
515
1796
D-575
28.2
80
274
530
982
4509
D-575
43.8
130
378
735
1372
5996
D-575
—
180
492
940
1811
7266
D-575
D-792
82.7
—
240
1.16
641
1.08
1240
1.11
2358
1.13
8433
1.21
technical info
Urethane…Compared with Natural & Synthetic Rubbers
PROPERTIES
SBR or
BUNA S
butadiene styrene
BUTYL
isobutylene
isoprene
NITRILE
(BUNA N)
NEOPRENE URETHANE
chloroprene
butadiene acrylonitrille
Stress/Strain in Tension
1,500
K-750D
6,000
K-950A
Compressive Stress (PSI)
Tensile Stress (PSI)
Natural Rubber*
50 phr black
K-900A
4,000
Stress/Strain in Compression
K-950A
1,000
Natural Gum*
Neoprene*
2,000
K-900A
K-800A
500
Natural Rubber*
50 phr black
Neoprene
Natural Gum
100
*
200
300
400
Elongation (%)
Neoprene at 65 Shore A
500
600
700
Natural Gum at 50 Shore A
5
10
15
Deflection (%)
20
25
Natural Rubber at 76 Shore A
7
Fax: 651-345-3759
Tension and Compression Comparisons: Most rubber materials have high elongation but low tensile strength.
To obtain greater tensile strength in rubbers, fillers are added with a resultant loss in its ability to elongate. K•Prene® has both high tensile
stress properties and high elongations, even in the harder grades. K•Prene® has far greater load bearing capacity than do conventional
elastomers of comparable hardness which is an important advantage in many areas such as metalworking dies, shock mounts and springs.
www.acrotechinc.com
Tensile Strength, (PSI) Pure Gum
Over 3000
Below 1000
Over 1500
Below 1000
Over 3000
1000 – 10,000
Tensile Strength, (PSI)
Over 3000
Below 1000
Over 1500
Below 1000
Over 3000
Black Loaded Stocks
Hardness Range (Durometer A) 30-90
40-90
40-75
40-95
40-95
33-95 + (75 shore D)
Specific Gravity (base material)
0.93
0.94
0.92
1.00
1.23
1.10
Vulcanizing Properties
Excellent
Excellent
Good
Excellent
Excellent
Excellent
Adhesion to Metals
Excellent
Excellent
Good
Excellent
Excellent
Excellent
Adhesion to Fabrics
Excellent
Good
Good
Good
Excellent
Excellent
Tear Resistance
Good
Fair
Good
Fair
Good
Outstanding
Abrasion Resistance
Excellent
Good to ExcellentGood
Good
Excellent Outstanding
Compression Set
Good
Good
Fair
Good
Fair to Good
Good
Compression Set Cold
Excellent
Good
Bad
Good
Very Good
Fair
Rebound Hot
Excellent
Good
Very Good
Good
Very Good
Good
Electric Strength
Excellent
Excellent
Excellent
Poor
Good
Excellent
Electrical Insulation
Good to Excellent Good to Excellent Good to Excellent
Poor
Fair to Good
Fair to Good
Permeablity to Gases
Fair
Fair
Very Low
Fair
Low
Fair to Good
Acid Resistance: Dilute Fair to Good
Fair Excellent
Good
Excellent
Fair to Good
Concentrated
Fair to Good
Fair to Good
Excellent
Good
Good
Poor
Solvent Resistance:
Aliphatic Hydrocarbons
Poor
Poor
Poor
Excellent
Good
Excellent
Aromatic Hydrocarbons
Poor
Poor
Poor
Good
Fair
Fair to Good
Oxygenated (ketones, etc.)
Good
Good
Good
Poor
Poor
Poor
Lacquer Solvents
Poor
Poor
Poor
Fair
Poor
Poor
Swelling in Lubricating Oil
Poor
Poor
Poor
Very Good
Good
Excellent
Oil and Gasoline
Poor
Poor
Poor
Excellent
Good
Excellent
Animal and vegetable Oils
Poor to Good
Poor to Good
Excellent
Excellent
Good
Water Absorption
Very Good Good to Excellent
Very Good
Fair to Good
Good
Good @ room temp.
Poor @ 212° F.
Resistance to:
Ozone
Fair
Fair
Excellent
Fair
Excellent
Outstanding
Sunlight Aging
Poor
Poor
Very Good
Poor
Very Good
Good
Heat Aging
Good
Very Good
Excellent
Excellent
Excellent
Good
Flame
Poor
Poor
Poor
Poor
Good
Fair
Heat
Good
Excellent
Excellent
Excellent
Excellent
Good
Cold
Excellent
Excellent
Good
Good
Good
Excellent
Oxidation
Good
Good
Excellent
Good
Excellent
Excellent
8,000
800-345-0583
NATURAL
RUBBER
technical info
Compression – Deflection
The Shape Factor
The Shape Factor accounts for urethane blocks or cylinders
bulging at their sides when under a compressive load. Increasing
the area that is free to bulge decreases vertical displacement,
or for the same displacement requires greater force.
8,000
Stress/Strain in Compression
K-750D
Compressive Stress (PSI)
K•Prene® has a far greater load-bearing capacity than do
conventional elastomers of comparable hardness, which
permits the design of smaller parts with savings in weight and
material cost. The graph (to the right) compares the compressive
stresses required to deflect samples of the four standard grades
of K•Prene® by up to 50%. When selecting K•Prene® urethane for
certain applications such as metal forming, major consideration
should be given to two factors: Shape Factor and the Modulus
of Elasticity.
6,000
4,000
K-950A
K-900A
2,000
K-800A
The concept of Shape Factor is numerically defined as the area
of one loaded surface divided by the total area of the unloaded
surfaces that are free to bulge. Dimensionally, this may be written as:
S.F. = l w
2t (l + w)
for rectangular
shaped blocks
OR,
S.F. = d
4h
10
20
Deflection (%)
30
40
(ASTM D575)
for solid discs
and cylinders
Where: l = length, w = width, t = thickness, d = diameter, h = height.
These equations are limited to:
1) Pieces which have parallel loading faces.
2) Pieces whose thickness is not more than twice the smallest lateral dimension.
Modulus of Elasticity
The Modulus of Elasticity, E, is defined as the force per unit area (stress) divided by the percentage of the change in height (strain); or:
E=
F/A
H/HT
Where: F = force, A = area, H = change in height, HT = total height.
For many of the common engineering materials, such as steels, E is a specific value that remains consistent within the elastic range of
the material. With urethane, however, the E value changes with each specific compound. (See curve on page 9).
The test data for those curves was determined over a two year period. Testing was conducted under controlled conditions, and the data
reflects the variation of E vs. Shape Factor for three K•Prene® grades with dry and lubricated surfaces.
The curves represented a statistical average of the test results, and are offered as a guide to help the engineer predict his forces, size
and grade of urethane required, or percent deflection.
Other Engineering Considerations
Heat build -up, due to internal friction (hysteresis effect), is the most common cause of premature failure of urethane. The amount of heat
generated is a direct function of degree of deflection. Thus, in selecting K•Prene® materials minimize the percentage of deflection for
longer life.
K•Prene® urethane can withstand temperatures up to 250° F., although it may soften before that point and lose some load-bearing
capacity. However, upon cooling, it will return to its original physical characteristics. The urethane will also withstand temperatures
down to -80° F.
Lubricated or dry condition of load-bearing area is another factor that affects the stress-strain relationship. For urethane compressed
between parallel plates, there is a tendency for the surface to spread laterally. While a clean, dry loaded surface offers some resistance to
this lateral movement, a lubricated surface will offer essentially none. If extremely high pressures are required, lateral movement can be
prevented by bonding the urethane to metal with double-faced tape or K-20 adhesive.
Cut resistance of K•Prene® urethane is very high. However, placing it near a sharp metal edge or permitting it to bulge over a sharp edge
should be avoided. With forces involved, the urethane may fail due to cutting or fracturing.
8
50
technical info
How to use the Curves
800-345-0583
In solving problems, the engineer should first determine the Shape Factor using the formula previously introduced, and assume a particular size
of urethane pressure pad.
Having once determined the Shape Factor, the engineer can then select the appropriate grade of K•Prene® urethane, and come horizontally
across on the chart to find E. With the Modulus of Elasticity known, one can then apply the basic formula of E to solve for either force or
percentage of deflection.
That is:
% Deflection = H
HT
AE• or (% Deflection) AE*
OR,
F
AE*
www.acrotechinc.com
F=
H
HT
*For deflections more than 20%, E must be modified by the multiplier derived from the small curve. For deflections equal to or smaller
than 20%, this multiplier is one.
Note: Solutions for “force” or “percentage of deflection” using these equations should be accurate to within ± 10% of actual values.
Be sure to allow for this margin of error in problem solving.
Fax: 651-345-3759
Variation of Modulus with Shape Factor
(Inset Curve for Greater Than 20% Deflection)
40,000
K-750D
1.15
K-900A
Multiplier
30,000
1.20
25,000
20,000
1.10
K-800A
Modulus of Elasticity, (E–PSI)
1.05
15,000
1.00
20
22
24
26
28
30
% Deflection
10,000
9,000
8,000
K-750D Lubricated
7,000
6,000
5,000
K-900A Lubricated
4,000
3,000
K-800A Lubricated
2,000
1,000
.1
.15.
2.
25
.3
.4
.5
.6
.7 .8
.9 11
.5
22
.5
34
5
Shape Factor
9
technical info
Electrical Properties
K•Prene® has been used successfully for potting and encapsulation at frequencies up to 100 kilocycles and at temperatures up to 212° F.
(Typical electrical properties are shown below).
Typical Electrical
Properties of K•Prene®
8,000
0.1 kc
100 kc
Power factor
(ASTM D150 - 59T)
75° F.
158° F.
212° F.
4.7
4.7
12.6
5.9
—
3.9
Dielectric constant (SIC)
75° F.
9.4
7.8
(ASTM D150 - 59T)
158° F.
11.0
—
9.9
212° F.
11.5
DC Vol. resistivity, ohm-cm
(ASTM D150 - 59T)
75° F.
4.8 x 1011
158° F.
3.8 x 1010
212° F.
2.3 x 1010
DC Vol. Resistivity, ohm-cm
(ASTM D149)
Arc resistance, seconds
(ASTM D495)
450 - 500
73 - No carbon
tracking
K-750D
6,000
Tensile Stress (PSI)
Temp.
Stress/Strain in Tension
K-950A
K-900A
4,000
K-800A
2,000
100
200
300
400
500
600
Elongation (%) - (ASTM D412-61T)
700
Abrasion Resistance
K•Prene® has outstanding abrasion resistance and can outlast conventional rubbers and plastics which leads to many important applications
where severe wear is a problem. The selection of K•Prene® for these end uses is normally based on service tests, since laboratory abrasion
tests can be misleading. In actual use K•Prene® has demonstrated more than eight times the abrasion resistance of ordinary rubbers and
plastics.
Coefficient of Friction
K•Prene® has a low, unlubricated coefficient of friction which decreases sharply with the harder grades such as K-750D. This property,
in combinations with superior load bearing ability and abrasion resistance, makes K•Prene® desirable for use in bearings and bushings.
Tension Properties
Measurements of tensile strength for K•Prene® are not used as frequently by the design engineer as compression measurements. This is
because the elastomer is used less frequently in tension. On the other hand, tension tests are commonly used by the rubber compounder
and are almost universally used to establish the general performance characteristics of the elastomer.
(Tensile stress-strain curves for various grades of K•Prene® are shown above). Note that they possess high strength even at low elongations,
and that hard grades as well exhibit good elongation.
Adhesion
During fabrication of composite parts, K•Prene® can be readily adhered to many metals, elastomers and plastics to form a bond that is often
stronger than the elastomer itself. Also, because of its hardness and rigidity, K•Prene® components can be mechanically fastened to metal,
wood, or concrete structures with practical results.
Flex Properties
K•Prene® will resist cracking under repeated flexure and accordingly finds successful use in many dynamic applications such as flexible hoses
and couplings. In all elastomers the rate of cut growth can be reduced by decreasing the thickness of the part, normally with a corresponding
loss in strength. With K•Prene®, however, thin sections can be used effectively because of this elastomer’s exceptional strength and toughness.
Impact Resistance
K•Prene® has significantly better impact resistance than structural plastics. All grades of K•Prene® including the hardest grade K-750D show
good impact resistance at low temperatures and low brittle points.
10
properties
800-345-0583
Environmental Properties of K•Prene®
The superior mechanical properties of K•Prene® urethane are not greatly affected by many environmental influences. In comparison with
other elastomers, K•Prene® shows outstanding performance over a wide temperature range. K•Prene® exhibits excellent resistance to
most common lubricants and aliphatic solvents, and has outstanding water resistance.
This section covers the effects upon K•Prene® of normally encountered environmental influences.
www.acrotechinc.com
Cold Resistance
K•Prene® remains flexible at very low temperatures and possesses outstanding resistance to thermal shock. Standard grades remain
flexible at temperatures below -80°F., although stiffening does occur as the temperature is reduced below 0°F. Special compositions
can be formulated which retain a degree of flexibility at temperatures as low as -125°F.
Heat Resistance
K•Prene® can be used for service applications at temperatures up to 200-250°F., with only a minor decrease in physical properties as
tested at ambient temperatures (75°F.).
Fax: 651-345-3759
Use of K•Prene® above 250°F., even if only intermittent, is not recommended and each contemplated use at 200°F., or above should be
evaluated individually beforehand.
Resistance to Aging
Properly compounded products of K•Prene® are not affected by the passage of time under static ambient temperature conditions. This
statement can be substantiated by data on specimens stored for periods of six years or more. Prolonged use in normal service is not a
problem, nor is there any indication of shelf aging.
However, the introduction of certain other environmental influences combined with the passage of time can accelerate deterioration.
For instance, chemical agents or dynamic forces acting upon a K•Prene® product over a period of time can intensify the aging process.
Normally in multiple attacks such as these the effects strictly due to aging may be so masked as to become unrecognizable.
Water Resistance
K•Prene® is resistant to the swelling and deteriorating effects of immersion in water and has excellent long term stability in water at
temperatures as high as 120°F. Tests show that even after immersion in water for as long as one year at 120°F., a typical grade retained
75% of its original tensile strength.
The chemical structure of K•Prene® gives us an excellent hydrolytic stability such that a mixture of water and oil will have no greater effect
on the elastomer than water by itself.
Weatherability and Color Stability
Prolonged exposure to ultraviolet light will gradually degrade physical properties of K•Prene®. For applications in which long term
UV exposure is required, special formulations are available.
Outgassing
Products made from K•Prene® are very stable under high vacuum conditions. They show extremely low weight losses in standard outgassing tests. This property, combined with excellent low temperature performance, suggests logical applications in the aerospace field.
Flame Resistance
All K•Prene® grades are either extremely slow burning or self-extinguishing as tested in accordance with ASTM 0635. It is possible to
obtain special compounds containing flame retardants which are completely non burning under test conditions.
Mold, Mildew, Fungus Resistance
Standard compounds of K•Prene® do not support fungus and are generally resistant to fungus attack and mildew growth. Samples buried
for one year in moist inoculated soil showed no evidence whatever of attack, and the vulcanizate properties were essentially unchanged.
Oxygen and Ozone Resistance
K•Prene® resists oxidation and is immune to the powerfully destructive attack of ozone. Oxygen and ozone in atmospheric concentrations
have no observable effect on K•Prene®. In one test specific, K•Prene® grades were exposed to three parts per million ozone under 20%
static strain conditions for 500 hours with no signs of surface cracking or crazing. It is this property in combination with insulating
electrical properties that makes K•Prene® ideal for use around electrical equipment where ozone concentrations are highest.
Likewise, stress-strain properties of K•Prene® are little changed after oxygen exposure for four weeks at 158°F., under 300 PSI oxygen
pressure.
11
properties
Radiation Resistance
K•Prene® urethane has excellent resistance to the damaging
effects of gamma ray radiation in comparison with other
elastomers and plastics. Products of K•Prene® appear capable
of giving satisfactory service even when exposed to high
gamma ray concentration of up to 100 megaroentgens.
They are more resistant than are other elastomers to stress
cracking and retain a great amount of their original flexibility
and physical toughness while exposed to gamma radiation.
As a result, K•Prene® can be used to provide radiation
protection in atomic reactor installations, x-ray laboratories,
and aerospace facilities.
Oil and Solvent Resistance
Oil resistance is the ability of a part to retain utility in contact
with oil. There are two effects which commonly occur. The
first is a change in dimensions or swelling, and the second
is deterioration of the material’s original properties.
K•Prene® has excellent oil resistance which makes its
products particularly suitable for service in the presence of
lubricating oils and greases. K•Prene® will resist animal fats
and oils, waxes, greases, and most aliphatic hydrocarbons.
Aromatic hydrocarbons and polar or chlorinated solvents
have a moderate to severe effect on K•Prene®.
It is recommended that tests be made beforehand if the
application under consideration will involve direct contact
with oils as sometimes oil additives attack the material.
Chemical Resistance
The best way to determine whether or not the product will
be entirely satisfactory for a given application is to test it in
actual service. Where this is not practical, simulated tests
should be devised to duplicate actual service conditions as
closely as possible. Acrotech should be provided with
complete details on the conditions involved or the intended
application to insure that the parts are correctly compounded
and processed to provide successful resistance against
chemical attack.
The A, B and C ratings (in the table below) are based upon
data from laboratory tests and records of actual service
performance. Where specific information is not available,
T and X ratings are indicated. These are educated guesses
based upon experience and a familiarity with the chemistry
involved. T means, “Test before using but most likely to be
satisfactory”. X means, “Most likely to be unsatisfactory”.
Unless otherwise noted, all ratings are at room temperature
and the concentrations of all aqueous solutions may be
considered saturated. In the case where parenthetical
temperatures are listed, they refer to temperatures actually
used in tests or service applications, but do no necessarily
represent temperature limits.
Rating Chart Key
(see chart to the right)
Little or no effect...................................................................................A
Minor to moderate effect....................................................................B
Severe effect to complete destruction..............................................C
Test before using. No data but most likely to be satisfactory......... T
No data but most likely to be unsatisfactory...................................X
12
Oil, Chemical and Solvent Resistance of K•Prene®
A general guide for the exposure of K•Prene® elastomers to a
wide range of chemicals is provided below. This table should be
used as a guide only. Other requirements for satisfactory performance
must be considered, such as operational temperature ranges, aeration,
length of time exposed, and other pertinent factors.
CHEMICALRATING
CHEMICALRATING
Acetic acid, 20%
B
AcetoneC
Aluminum chloride solutions
T
Ammonia, anhydrous
T
Ammonium hydroxide solutions
A
ASTM hydrocarbon test fluid
T
ASTM oil No. 1 (158°F.)
A
ASTM oil No. 3 (158°F.)
B
ASTM reference fuel A
A
ASTM reference fuel B (122°F.)
B
ASTM reference fuel C
C
Barium hydroxide solutions
A
BenzeneC
Borax solutions
A
Boric acid solutions
A
ButaneA
Calcium bisulfite solutions
A
Calcium chloride solutions
T
Calcium hydroxide solutions
A
Calcium hypochlorite, 5%
T
Carbon dioxide
A
Carbon monoxide
A
Carbon tetrachloride
C
Castor oil
A
Chlorine gas, dry
X
Chlorine gas, wet
X
Chromic acid, 10-50%
X
Copper chloride solutions
A
Copper sulfate solutions
A
Cottonseed oils
A
CyclohexaneA
DOWTHERM A B
Ethyl acetate
C
Ethyl alcohol
C
Ethylene glycol
B
Formaldehyde, 37%
X
Formic acid
X
FREON-11*B
FREON-12* (130°F.)
A
FREON-22*C
FREON-113*A
FREON-14*T
Fuel oil
B
GasolineB
GlueA
GlycerinA
n-Hexane (122°F.)
B
Hydraulic oils
B
Hydrolic acid, 20%
B
Hydrochloric acid, 37%
X
HydrogenA
Hydrogen peroxide, 90%
T
Isooctane (158°F.)
B
Isopropyl ether
B
JP-4
C
JP-5
C
JP-6
X
KeroseneC
Lacquer solvents
X
Linseed oil
B
Lubricating oils
B
Magnesium chloride solutions
A
Magnesium hydroxide solutions
A
MercuryA
Methyl alcohol
C
Mineral oil
A
NaphthaB
NaphthaleneB
Nitric acid, 10%
C
Oleic acid
B
Palmitic acid
A
Perchloroethylene
C
Phenol
C
Phosphoric acid, 20%
T
Potassium hydroxide solutions
A
SEA No. 10 oil (158°F.)
A
SKYDROL 500
C
Soap solutions
A
Sodium hydroxide, 20%
T
Sodium hydroxide, 46.5%
A
Sodium hypochlorite, 5%
T
Sodium hypochlorite, 20%
X
Soybean oil
B
Stearic acid
A
Sulfur dioxide, liquid
T
Sulfur dioxide, gas
T
Sulfur trioxide
T
Sulfuric acid, up to 50%
T
Sulfuric acid, 50-80%
C
Sulfurous acid
T
Tannic acid, 10%
A
Tartaric acid
A
TolueneC
TrichloroethyleneC
Tricresyl phosphate
B
Trisodium phosphate solutions
A
Tung oil
B
TurpentineC
Water (122°F)
A
*FREON is a registered trademark of E.I. du pont de Nemours & Co. (inc.)
machining
Machining of K•Prene®
Machining of K•Prene® urethane proves useful when the required tolerances cannot be obtained by conventional molding methods, or when
low production runs do not justify the cost of molds. We maintain a complete inventory of sheets, round rods, and bars in six different
hardnesses which can often be used to make prototypes or limited production quantities.
800-345-0583
The table below details the general machining characteristics of K•Prene® urethane K-900A durometer and harder. For K•Prene® urethane
below K-800A durometer, cutting tools are often not satisfactory and grinding may be required. In some cases, machinability can be improved
by freezing K•Prene urethane below K-800A durometer with dry ice or liquid nitrogen.
Machining of K•Prene® urethane is similar to that of metals, and in most cases the same tools can be used.
The principle differences between metal and urethane machining are:
www.acrotechinc.com
Modulus of Elasticity
Urethanes are resilient and can be easily distorted, so care must be taken to avoid distortion due to holding or cutting forces.
Softening Point
Gumming, poor finishes and poor dimensional control will readily occur if excess heat is generated and allowed
to accumulate. Proper tool geometry, feed rates and cutting speed in conjunction with coolants can usually
overcome these problems. Water-soluble cutting oils and/or light machine oils are good
coolants for urethanes.
Lower Thermal Conductivity
Fax: 651-345-3759
Heat generated by the cutting tools stays close to the tool and raises the urethane temperature rapidly.
This heat must be controlled. Melting can occur above 350° F.
Elastic Memory
Elastic recovery occurs in urethanes both during and after machining, so the cutting tool must provide clearance to compensate
accordingly. Without compensation, expansion of the urethane after cutting will result in increased friction between the cut surface and
the cutting tool. Excess heat build-up will result. Elastic recovery after machining can result in smaller internal diameters or larger external
diameters than were measured during cutting.
MachiningRecommended
Size
Applications
ToolsLimitations
MaximumWorkholding
Speeds
Recommendations
Suggestions
Vises or clamps
(Not required with flats
or sheets).
• Rotate rounds when
sawing.
• Maintain high blade
tension.
Friction clamps.
• Use bevel edge blades
(square degree, compress urethane, resulting
in uneven cuts).
Vises or clamps.
• Good tolerances
possible with K-750D,
for other grades use
over-size drills.
Vises or clamps.
• Except for K-750D,
use over-size tap to
allow for shrinkage
or urethane.
800 surface ft./min.
Angle of cut to work:
90° - 120°.
• Form tools may be
used (especially when
machining K-750D).
Tool post grinder
20-80 grit wheel.
Lathe–150 RPM or
lower.
Grinder–2000-3500
RPM.
Fixtures or friction
mandrels.
• Air blast to eliminate
build up.
Knifing
Carbide or H.H.S. razor
sharp and as thin as
possible.
600-1000 RPM
Fixtures or friction
mandrels.
• Use lubricant to help
prevent dishing.
Milling
Sharp single-blade
flycutters with 10°
back rake and good
clearance.
Approx. 2000
surface ft./min.
Vise or double-face
clamping tape.
• Flycutting at approx.
3" dia. give best results.
Bandsawing
Sharp 2-4 hook carbide
blade with raker set.
Max. 8" thick
Min. 1/8" thick
sheets.
Cutting
Shearing
Slitting
Shears or belt-cutting
machines with up to
1/8" knife blade.
Thin sheets
(up to 1/2").
Drilling
High speed 90° + twist
drills with blunt point.
Min. of 3/8"
(no minimum
if clamped
between steel).
Tapping
Regular high speed
taps.
None
Turning
Boring
H.S.S. tool bits with
positive rake of
5°-10°.
No limits on dia.
length restricted
(long soft bars
may flex).
Grinding
Min. 3/8" thick
1800 ft./min. (reduce
to 1200 ft./min below
K-900A).
600-800 RPM
13
res
ista
Loo
nc e
se t
ma
ole
chin ran
ce
ing
on s & ro
me
Abr
tal ugh
asio
par
n re
ts
sist
anc
Har
e
dn
and ess p
lu
elo
nga s high
tion
flex
Abr
asio
n re
sist
anc
e
Ozo
ne
res
ista
nc e
Abr
asio
n re
sist
anc
e
per
ties
pro
rica
l
Abr
asio
n
anc
e
res
ist
Ele
ct
ear
ing
Abr
asio
n
ad
b
anc
e
Hig
h lo
res
ist
h
Abr
asio
n
stre
ngt
sile
res
ist
Ten
APPLICATIONS
Abr
asio
n
K•Prene®…
Unequaled
Results in Many
Applications
anc
e
appolications
Strippers, Springs
•
•
•
•
Encapsulating & Potting
•
•
Molds •
•
Tooling and Holding Fixtures
•
•
•
Plungers
•
•
Pedals
•
•
Hangers
•
•
•
Casters
•
•
•
Pulleys
•
•
Oil Field Equipment
•
•
•
•
•
•
•
•
Pallet Wheels
•
•
•
•
•
Seals, Oil
•
•
•
•
•
•
•
Metalforming Pads & Dies
•
•
•
•
•
Valve Seats
•
•
•
•
•
Heels
•
•
•
•
•
Hammers & Mallets
•
•
•
•
•
•
•
Drive or Friction Rolls
•
•
•
•
•
Mounts, Shock Absorbing
•
•
•
•
•
•
Belts (Light Drive)
•
•
•
•
•
& Conveyor Belts
Timing Belts
•
•
•
•
Couplings
•
•
•
•
•
•
•
•
Wheels & Industrial Tires
•
•
•
•
•
•
Drives, Gear
•
•
•
•
•
Diaphragms
•
•
•
•
Bushings
•
•
•
•
•
Packings
•
•
•
•
Bearings
•
•
•
•
•
•
Gaskets
•
•
Liners for Sheaves, •
•
•
•
•
•
Chutes & Hoppers
Rotors (Pump) and Impellors
•
•
•
•
•
Bumpers
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Industries Utilizing K•Prene® Urethane
Aerospace
Chemicals
Industrial
Mining/Quarrying
Recreation
Agriculture
Coated Fabrics
Machinery
Oil
Rubber Products
Appliances
Construction
Marine
Paper
Spill Control
Automation
Consumer products
Medical
Plastic Products
Textiles
Aviation
Electronics
Metal Forming
Railroad
Wheels/Tires
Business machines
Furniture
Military/Defense
Research & Development
14
metal forming
Metal Forming
Applications Using Urethane
Metal Forming Applications
Using Urethane
Deflector BarsBulging
800-345-0583
Die Pad
Why use K•Prene® urethane in forming applications?
There are several families of urethane elastomers, but not all of them will perform equally well. Even within one grade of a given
Die Retainer
Deflector
Bars cured properties can
urethane
formulation,
vary widely. K•Prene® urethane is specifically compounded and processed by Acrotech Inc.,
to maximize the characteristics desired for optimum tool and die operation. Some of the major advantages of urethane
are non-compressibility, resiliency, and the ability to form and hold metal without marring its surface finish.
It behaves similar to a solid fluid with a memory; under force it will change its shape, but its volume will
tion on
informa l forming
e
r
o
m
remain constant. Urethane will produce high, uniform and continuous counter pressure
ta
For
s of me s for our
u
rinciple
under load. And, when the load is removed, it quickly returns to its original shape.
basic p ene®, contact
r
.
P
•
lo
K
a
cat g
with
TB-90
PBulging
Die Pad
Punch
Die Retainer
Plates Can Be Used
ApplicationPunch
Examples where K-Prene® Urethane
Plates
Radius Forming with Deflector Bars
Die Pad
Plates
Bulging Punch
Bars urethane offers Die
InDeflector
bulging applications,
muchRetainer
longer service
life than rubber, and is very cost effective compared to
expanding/shrinking steel punches. Displacement of urethane punch under compression forces metal outward into
desired shape. Amount of bulge is determined by depth of
stroke. When ram is raised (after stroke), urethane resumes
its normal shape and bulged part can be easily removed.
Die Retainer
Plates
Compound Bends
Stripping
Pad
Alignment
Plates
Steel
Die
Deflector Ba
Punch
Bulging
Punch
Fax: 651-345-3759
Bulging
Punch
Deflector Bars
Die Pad
www.acrotechinc.com
Urethane die with deflector bars positioned under pad.
Bars are graduated in size to control deflection of urethane.
This helps form the
difficult bends.
Bulging
Punch
Die Pad
Die Retainer
Deflector Bars
Difficult forms like these can be made with a standard
urethane die pad (definition is best with lighter gauges).
Stripping Punch
Deflector bars beneath die pad
Maximum
Pad
provide air space to permit
60% of
Stripping Pad for Punching
Steel
greater penetration
Pad Width
Die
into pad.
A standard urethane
Die Pad
pressure pad
Deflector
Bars
machined to fit around
Machined
Die
Pad
Machined Die Pad
Die Pad
punch. This is an easy,
Die Pad
Air Space Air Space
Stripping
economical method
Die Retainer
Die Retainer
Pad
of constructing a
Deflector Bars
Deflector Bars
durable, oil resistant,
high pressure
Steel Die
Over-forming
stripping pad.
Unique adaptation of urethane pad to over-form flanges.
Here, the pad is cast or machined-to-shape because greater
pressures are required. This
Roll Bending
design provides compensation
Shaft
for springback.
Max. 60% of
A rotating steel shaft coated with
Pad Width
K•Prene® working with another steel
shaft positioned directly above, results
in round parts with little or no flats on
Machined Die Pad
Die Pad
Shaft
Air
Space
the leading or trailing ends.
Deflector Bars
Die Retainer
Max. 60% of
Die Retainer Pad Width
K•Prene®
Deflector Bars
Stripping
Pad
Punc
Steel
Die
The information
suggestions in this brochure are based upon the best laboratory and technical information available to us. Any recommendaDeflectorand
Bars
tions or suggestions are made without warranty or guarantee, since the conditions of use are beyond our control. Nothing contained herein shall
Die of
Retainer
be construed to imply the nonexistence
any relevant patents nor to constitute a permission, inducement or recommendation to practice any
Shaft
invention covered by any patent owned by Acrotech Inc. or by others, without authority from the owner of the patent.
Shaft
Shaft
15
Deflector Ba
roll bending
Acrotech manufactures a line of
One Pass Two Roll Bending Machines.
If you have large-volume needs for complete or partial cylinders with
little or no flats on the ends, our machines will produce your parts quickly
and cleanly. This includes polished materials containing large cutouts or
perforations!
The Benefits of
“One Pass” Two Roll
Bending Machines
Roll parts with a minimum of flat on the leading
and trailing ends for easier welding and better
looking parts.
Increase production and lower costs because
there is no preforming required.
Roll perforated and other difficult materials
without fluting or kinking. Roll prefinished
materials (stainless, aluminum, prepaint, etc.)
without damaging parts.
Easy set up and operations with
excellent repeatability and quick
tooling changes.
For a quote, contact one
of our machine engineers,
or inquire at:
www.acrotechinc.com
800-345-0583
Custom Rolling
Forget the scheduling headaches
and pursue outsourcing your
rolled product.
In addition to providing rolled samples, Acrotech
offers custom rolling services.
If you roll parts sporadically or in small
quantities, Acrotech will custom roll them for
you! We have several machines and a full
selection of tooling readily available to provide
quality rolled parts in a timely manner. You’ll be
surprised at how economical custom rolling can
be with our One Pass Rolling Machines.
16
machines
800-345-0583
Every model in Acrotech’s unique line of Two Roll
Bending Machines is designed and built for production
and precision. These machines will roll a variety of
materials and configurations into cylinders with virtually
no flats on the ends!
www.acrotechinc.com
Models 1212, 1618 and 1824
Built to meet the demands of production involving small, light gauge parts.
Pneumatic lock-up is standard on all models for increased productivity.
120V 1PH standard wiring simplifies installation. 220 or 440V 3PH wiring
is also available.
Fax: 651-345-3759
Model V-1006
If you would like to see
our machines in action,
call us or check out the video
on our web site!
www.acrotechinc.com
The unique design of the
cantilevered rolls mounted in a
vertical position, allows the parts
to simply drop from the machine
at the end of the rolling cycle,
greatly increasing productivity. Its
short, sturdy rolls are ideally suited
for narrow parts such as clamps,
brake bands, hole saws, light
fixtures, etc.
LD & HD Models
Designed for the production
of larger, heavier gauge parts.
The drop arm and the lower roll
are positioned pneumatically on
all LD machines and hydraulically
on the HD models.
(See pages 20-21 for standard
and optional accessories).
17
roll bending
The Art of Roll Bending
Roll-bending or curving, as defined here, designates the manufacture
of sheet-metal parts that are rolled or curved into cylindrical shapes
or shapes that have a smooth radius associated with them.
Basic Machine Construction
There are two basic frame designs:
1) Horizontal
2) Vertical
LD, HD, 1618, 1212 & 1824 Models
depict a typical horizontal roll-bending machine. Its major parts
include the bottom, urethane-covered roll, the top (steel) roll, and
the overarm, which can be opened and closed to facilitate the
removal of a finished piece part. (See page 17 for models).
Model V-1006 depicts a typical vertical roll-bending machine.
The operation of this machine is basically the same as that of the
horizontal one, except that in this case, piece parts are loaded and
unloaded vertically. In general, the vertical machine is faster than the
horizontal one, but it is limited to rolling piece parts that are shorter.
(See page 17 for models).
In every case, steel plate and steel weldments are used in the frame
of the machine. This provides sufficient rigidity and, at the same time,
resiliency, necessary to roll parts of varying thickness.
Two Roll vs. Three Roll Process
Note that the drawbacks of the three roll systems, whether pinch
or pyramid type, are that the work piece is not confined during the
bending process, i.e., bending takes place “in the air.” When rolling
parts this way to some desired shape and tolerance, several passes
might be required with roll adjustments necessary after each pass.
This is relatively slow and requires considerable skill on the operators’ part.
Getting Parts With
Different Radii
In all cases the radius of the rolled part is controlled by the radius
of the top roll and the natural spring-back of the material
(so accurate is the Pressure of the two roll
system that if, in a given run, parts with wrong
raduius start coming off the machine, the thing
to do is to check the material quality, not the
machine setting).
In other words, the machine has a “zero tolerance”, meaning that
variations in the free diameter of the rolled part are due only to
the variations (hardness, temper and thickness of material) in the
natural spring-back of the material.
Some of the disadvantages of a Three Roll,
Pinch-Type or Pyramid-Type system include:
The ends of blanks must be pre-formed on other
equipment (or cut off which means material waste).
Flat areas may form between cutouts and perforations in
a part, eliminating the possibility of making such openings
while the piece part is flat, requiring more complex process.
Fluting or kinking of material will occur especially in parts
with cutouts and perforations.
It is practically impossible to roll prefinished (polished,
painted, enameled, etc.) material without the possibility
of damaging finished surfaces (cracking and scratching).
Three Roll,
Pinch-Type System:
The Two Roll Principal
The Two Roll Principle method is comprised of a steel top roll and
a urethane bottom roll. A segment of this top roll is pushed into
the urethane bottom roll, and this deflecting volume of urethane
functions the same as hydraulic fluid in a hydroforming process,
exerting very high pressures against the steel roll. When sheet
metal is inserted between two such rolls, the urethane wraps
the sheet metal tightly against the steel roll (similar to a radius
forming urethane press brake die), and since the urethane roller
is driven, the sheet metal is roll formed into a precise radius.
Allowing for natural spring back of the material, this radius
remains uniform irrespective of whether the shape of the part
being formed is a complete circle, or is only a segment of a circle.
In most applications this will eliminate the necessity of either
pre-forming or cutting off the ends. The flat spots on the leading
and trailing edges are very minimal (approx. one to four material
thicknesses, depending on the type of material). Otherwise
difficult-to-roll sheet metal parts, such as those with perforations,
cut-outs, uneven feeding or trailing edges, embossed parts, etc.
can be formed without kinking or fluting. Finally, the relatively
soft urethane surface will not mar or scratch finished surfaces.
18
Two Roll,
Steel Urethane System:
Rotation of both rolls
produces accurate
curving and rolling
of complete or partial
cylinders in one pass!
Material
Slip-on
tube
Flat area
Material
ent
stm
Adju
Adjustment
Steel Rollers
Three Roll,
Pyramid-Type System:
Top shaft
Bending Roll
Bottom
shaft
Material
Adjustment
K•Prene®
urethane
Steel Rollers
roll bending
Roll Benders Specifications
1212
1618
1824
Working length
of rolls
Std. Metric
Diameter of
top roll
Std. Metric
Diameter of
bottom roll
Std. Metric
Rolling speed
f.p.m.
Motor
Std.
Metric
hp.
-
12 ga.
2.7mm12"
305mm3-1/2"
88.9mm9"229mm22
670.6CMPM1.0
M183516 ga.
1.5mm18"
457mm3-1/2"
88.9mm6"152mm15
457.2CMPM1.0
-
18 ga.
1.2mm24"
610mm3-1/2"
88.9mm6"152mm15
457.2CMPM1.0
10 ga.
3.4mm6"152mm4" 102mm8"203mm22.0
6.68CMPM0.75
Understanding One Pass Rolling
The One Pass Acrotech method permits rolling segments of cylinders or complete cylinders from all types of sheet metal – finished, embossed,
perforated, wire mesh, regular or irregular shapes up to ¼" thick in a SINGLE PASS. This can be done at production rates ranging from 100 to
350 parts per hour on standard machines, to 1200 parts per hour on special machines.
Parts 2” wide to full width of the machine roll to the same diameter.
The Two Roll rolling and curving machine has a rather unique construction feature. This is what we call the anti-deflection system and this system
eliminates the possibility of rolling bell-mouth parts, which is caused by roll deflection. The center shaft can deflect under pressure, while the outer
tube stays parallel. The two bearings used between the tube and center shaft are of double roller spherical type and are self-aligned bearings. This
feature is used both in the top roll and the lower urethane roll. Conventional Three roll machines will normally crown the rolls, trying to eliminate the
bell-mouth condition.
The force package of the Acrotech Two Roll machine will consist of either a pneumatic or hydraulic package. The machine itself consists of a set
of linkage that is powered into position by a hydraulic or pneumatic cylinder. Once the linkage is into position, it actually over-centers and mechanically locks the roll into position, thereby eliminating the need for the hydraulic or pneumatic system to provide the pressure. What this means is the
machine is mechanically locked into position and this position cannot change with the entry of material, thereby giving you a repeatable part diameter.
The drive package is a very simple and low maintenance system consisting of an electrical motor and gear reducer and a chain drive to another set of
sprockets, further reducing the rolling speed and then directly to the urethane roll. The reason we are powering the urethane roll is to eliminate any
slippage that would be caused by rolling oily material. The urethane roll itself is not affected by grease or oil; therefore, de-greasing of the sheet stock
is not mandatory.
The Two Roll rolling and curving machine is a machine that is aimed at the high production market. Since each diameter part must have an individual
sleeve or shaft developed to produce this part, it is not feasible to use this style of machine in an atmosphere where there are a very low number of
parts produced and a very high number of sizes. Rather, we are looking for a market where there are a high number of parts to be run.
Roll Bending Spring-Back Example:
Commercial quality hot rolled and cold rolled steels in the 1020 carbon range have a wider tolerance of spring-back and are, therefore, subject
to more variation than the lower carbon steels in the 1010 carbon or lower range. This means that with commercial quality steels, a change can
be expected from one shipment to another, or even within the same batch of material being used. This change in spring-back will alter the free
rolled diameter of the finished part. With the precision roller, compensating for spring-back variations can be accomplished by changing the
diameter of the slip-on-tube being used.
Acrotech cannot be responsible for the variation in spring-back due to different material thickness or temper from the material
submitted for development or subsequent materials used.
19
Fax: 651-345-3759
V-1006 V
www.acrotechinc.com
LD-1418A183514 ga.
1.9mm18"
457mm3-1/2"
88.9mm9"229mm23.2
707.1CMPM1.5
LD-1118
A1840
11 ga. 3.1mm
18"
457mm4" 102mm9"229mm23.2
707.1CMPM1.5
LD-1224
A2440
12 ga. 2.7mm
24"
610mm4" 102mm9"229mm23.2
707.1CMPM1.5
LD-31618
A18503/16"
4.8mm18"
457mm5" 127mm9"229mm19.8
603.5CMPM3.0
LD-1024A245010 ga.
3.4mm24"
610mm5" 127mm9"229mm19.8
603.5CMPM3.0
LD-1230A305012 ga.
2.7mm30"
762mm5" 127mm9"229mm23.2
707.1CMPM1.5
HD-31624
B24603/16"
4.8mm24"
610mm6" 152mm12"
305mm16.0
487.7CMPM5.0
HD-1030B306010 ga.
3.4mm30"
762mm6" 152mm12"
305mm19.5
594.4CMPM3.0
HD-1236B366012 ga.
2.7mm36"
914mm6" 152mm12"
305mm19.5
594.4CMPM3.0
HD-31630
B30703/16"
4.8mm30"
762mm7" 178mm12"
305mm16.0
487.7CMPM5.0
HD-1036B367010 ga.
3.4mm36"
914mm7" 178mm12"
305mm16.0
487.7CMPM5.0
HD-1248B487012 ga.
2.7mm48"
1220mm7" 178mm12"
305mm19.5
594.4CMPM3.0
HD-31636
B36803/16"
4.8mm36"
914mm8" 203mm12"
305mm16.0
487.7CMPM5.0
HD-1048B488010 ga.
3.4mm48"
1220mm8" 203mm12"
305mm16.0
487.7CMPM5.0
HD-1160B608011 ga.
3.1mm60"
1520mm8" 203mm12"
305mm16.0
487.7CMPM5.0
HD-1672B728016 ga.
1.5mm72"
1830mm8" 203mm12"
305mm22.9
698.0CMPM1.5
800-345-0583
Capacity
Model
Model mild steel
Acrotech Di-Acro Std. Metric
roll bending
A
D
C
B
G
13
1
3
5
4
8
6
Roll Bending Applications
Acrotech machines best fit into an OEM type fabrication / manufacturing facility where high volume, consistent parts
are required at low cycle times. Some applications include:
Air Tanks
Architectural Designs
Catalytic Converters
Chemical or Nuclear Industrial Containers
Chimney Flues
Commercial Vehicle Panels
Compressor Casing for Air Conditioning
Electric Motor Casings
20
Exhaust Systems
Fan Blades
Fire Extinguishers
Gas or Fluid Tanks
Hole Saw Blades
Lighting Fixtures
Misc. Ducting Components
Misc. Rings and Bands
Motor and Blower Housings
Name Plates
Pipe Clamps
Pressure Vessels & Tanks
Sleeve Bearings
Tank Heater Elements
Washing Machine Tubes
Water Heaters
accessories
LD & HD Models
Standard Equipment and Optional Accessories
Standard Equipment
Optional Accessories
A
B
D
E
G
H
I
1618, 1824 & 1212 Models
Standard Equipment and Optional Accessories
Standard Equipment
Optional Accessories
Floor Stand
Tooling Slip on Tubes – when the diameter required is larger than what
the top shaft will produce, a Slip-On Tube is used. The tubes are developed
per part size and increase the forming diameter capability of the top shaft.
Quickly change the tube by simply slipping them on and off the top shaft as
needed. A Slip-On Tube will be required for each specific part.
Slip-On Tube Support – facilitates removal of finished piece-part.
Adjustable in height, this accessory supports slip-on tubes to prevent
pinching curved cylinders against lower roll when removing finished parts.
Small-OD Mounting Fixture – required for rolling parts smaller in
diameter than the standard top roll.
Small-OD Shaft Assembly – available in various lengths and diameters
for rolling material to a diameter smaller than standard top roll. Must be
used in conjunction with Small-OD Mounting Fixture. Permits rolling
diameters as small as one inch.
Motorized Roll Drive
Lower Roll Steel Core, Grooved K•Prene® Urethane
Manual Quick-Release Lever
Single–Lever Roll Engagement – Adjustable
Adjustable Feed Table with Finger Guard
Guarded Electric Footswitch
Pneumatic Lock-up
Electricals are UL Compliant
21
Fax: 651-345-3759
F
www.acrotechinc.com
C
Tooling Slip on Tubes – when the diameter required is larger than
what the top shaft will produce, a Slip-On Tube is used. The tubes are
developed per part size and increase the forming diameter capability of
the top shaft. Quickly change the tube by simply slipping them on and
off the top shaft as needed. A Slip-On Tube will be required for each
specific part.
Slip-On Tube Support – facilitates removal of finished piece-part.
Adjustable in height, this accessory supports slip-on tubes to prevent
pinching curved cylinders against lower roll when removing finished
parts.
Small-OD Mounting Fixture – required for rolling parts smaller in
diameter than the standard top roll.
Small-OD Shaft Assembly – available in various lengths and diameters for rolling material to a diameter smaller than standard top roll.
Must be used in conjunction with Small-OD Mounting Fixture.
Auto Timer – for controlling partial curvature of material 90°,
U-bends, etc. Can be used in conjunction with Part Ejectors for
automated rolling and part ejection. (not shown)
Reversing Control – gives added flexibility for special jobs.
(not shown)
Part Ejector – for increased production, part ejectors and part
feeders can be developed for most parts.
Motorized Roll Position Control – speeds the set-up from one job
to another. (not shown)
Additional Safety Features – can be custom built per customer
requests. Features such as light curtains, special guarding…etc
800-345-0583
1 Roll Position Control - single hand wheel provides quick
parallel roll adjustment.
2 Rotating Counter- indicates roll position in increments for
repeat set up. (not shown)
3 Automatic Overarm – Operates sequentially with K•Prene®
roll raising and lowering. Automatically locks in place.
4 Automatic Overarm Guard – protects operator from moving
overarm.
5 Push-Button Control and Signal Light – buttons control
roll and overarm cycle. Light indicates when machine is ready
for operation.
6 Guarded Foot Switch – leaves operator’s hands free to feed
material.
7 Electricals – are UL Compliant. (not shown)
8 Safety Knee Bar – provides additional safety for the operator.
Tripping the bar stops roller rotation, lowers overarm,
disengages rolls, and shuts off power simultaneously.
9 Electro-Hydraulic Control (HD) – for roll positioning and
automatic overarm; all models have motor driven rolls.
(not shown)
10 Electro-Pneumatic Control (LD) – for roll positioning and
automatic overarm. (not shown)
11 Bearings – pre-packed and sealed in upper and lower roll
assemblies. Each shaft is fitted with heavy-duty, self-aligning
spherical roller bearings. (not shown)
12 Anti-Deflection System – prevents bowing in upper and
lower roll assemblies, and provides for perfect cylindrical parts.
(not shown)
13 Feed Table – Machine Supported; units are adjustable for
height and feed angle and includes finger guard.
(See page 17 for models).
k-prene
Round Rods
(metric sizes on page 24).
Diameter
6"
Length
12"
1/4"
3/8
1/2
5/8
3/4
7/8
1
1-1/8
1-1/4
1-3/8
1-1/2
1-5/8
1-3/4
1-7/8
2
2-1/8
2-1/4
2-3/8
2-1/2
2-3/4
3
3-1/8
3-1/4
3-1/2
3-3/4
4
4-1/2
$106.60
5
118.25
6
152.90
7
193.95
8
241.30
(NOT AVAILABLE)
&
shapes
Custom vailable!
ea
sizes ar
24"
$16.20
16.70
12.20
13.15
14.30
15.65
17.25
19.40
21.55
24.15
26.70
30.20
33.70
36.85
40.00
43.65
47.25
51.25
55.25
64.05
76.35
79.10
81.80
92.40
103.85
116.05
145.35
267.00
276.40
358.40
453.00
36"
$21.85
22.90
19.15
21.00
23.35
26.05
29.20
33.60
37.95
43.10
48.20
55.25
62.30
68.60
74.90
82.00
89.15
97.15
105.15
122.85
147.45
152.85
158.25
179.55
202.45
226.80
285.40
347.55
513.25
677.40
866.60
48"
—­—
—
—
$26.05
$27.75
28.90
31.50
32.35
36.15
36.45
41.60
41.20
47.90
47.70
56.55
54.20
65.20
61.95
75.50
69.65
85.80
80.20
99.85
90.75
113.95
100.20
126.55
109.65
139.15
120.40
153.50
131.15
167.80
143.15
183.80
155.10
199.75
181.55
235.10
218.40
284.25
226.60
295.15
234.80
306.00
266.60
348.50
300.95
394.30
337.60
443.10
425.35
560.20
558.75
739.00
765.80
1016.50
1013.00
1344.80
1296.00
1723.20
See stocked inventory dimension tolerances for rods,
squares and rectangulars on page 4.
Square & Rectangular Bars
(metric sizes on page 24).
*Available with 1" diameter center hole at the same price.
To order, specify “ with center hole.”
Width
Height
3/8"
1/2
5/8
3/4
1
1-1/4
1-1/2
1-3/4
*2
2-1/2
*3
3
4
5
6
22
3/8"
1/2
5/8
3/4
1
1-1/4
1-1/2
1-3/4
2
2-1/2
2
3
4
5
6
12"
$11.75
12.70
14.05
15.35
21.75
26.60
32.45
37.85
47.25
66.70
69.85
98.20
165.90
233.45
315.85
24"
$18.20
20.05
22.75
25.40
38.10
47.80
59.55
69.95
89.60
128.10
134.30
191.00
285.80
420.85
585.70
Length
36"
&
shapes
Custom vailable!
ea
sizes ar
$24.70
27.50
31.50
35.50
54.60
69.10
86.75
101.20
131.80
189.55
198.87
283.95
415.00
617.40
864.80
48"
$25.85
29.60
53.05
40.30
65.75
85.05
108.60
126.70
168.65
245.70
258.10
371.50
535.00
804.85
1,134.75
2" Blocks
$27.00 per ft.
$52.70 per ft.
$75.10 per ft.
k-prene
Precision Cast Sheets
See stocked inventory dimension tolerances on page 4.
Width
48"
48
48
48
6
12
18
24
36
48
12
18
24
36
48
18
24
36
48
24
36
48
60
72
48
96
1"
2
3
4
6
12
18
24
48
1/16"
1/8"
$20.25
24.70
29.20
33.60
19.10
22.50
25.85
29.20
35.90
42.65
29.20
35.90
42.65
56.00
69.40
45.90
55.95
76.15
96.30
69.40
96.30
107.30
138.90
150.15
—
—
$22.25
28.80
35.30
41.70
20.60
25.50
30.35
35.20
44.95
54.60
35.20
44.95
54.60
74.05
93.55
59.55
74.05
103.25
132.40
93.55
132.40
155.50
195.20
217.70
—
—
3/4" 1"
48" $43.60 $65.75
48
71.30 87.40
48
99.15 123.30
48 126.95 159.10
6
36.65 42.65
12
57.45 69.50
18
78.35 96.40
24
99.15 123.30
36 140.80 176.95
48 182.50 230.70
12
99.15 123.30
18 140.80 176.95
24 182.50 230.70
36 265.85 338.20
48
349.25 445.65
18 203.40 257.60
24 265.85 338.20
36
390.95 499.40
48
516.00 660.55
24
349.25 445.65
36
516.00 660.55
48
667.00 859.75
60
757.50 982.40
72
892.40 1,162.25
48 1,162.25 1,522.10
96 2,241.85 2,961.55
3/16"
$24.25
32.75
41.30
49.70
22.15
28.45
34.85
41.30
54.00
66.70
41.30
54.00
66.70
92.20
117.60
73.10
92.20
130.30
168.55
117.60
168.55
203.70
251.40
285.10
—
—
1/4"
3/8"
1/2"
5/8"
$26.25 $30.25 $34.25 $39.50
36.75 44.75 52.80
63.30
47.25 59.35 71.30
87.05
57.75 73.80 89.90 110.90
23.65 26.70 29.60
33.60
31.50 37.50 43.60
51.45
39.40 48.40 57.45
69.20
47.25 59.35 71.30
87.05
63.00 81.05 99.10 122.75
78.75 102.80 126.95 158.50
47.25 59.35 71.30
87.05
63.00 81.05 99.10 122.75
78.75 102.80 126.95 158.45
110.25 146.40 182.50 229.75
141.75 189.95 238.15 301.05
86.65 113.70 140.80 176.20
110.25 146.40 182.50 229.75
157.40 211.70 265.90 336.75
204.65 277.00 349.25 443.75
141.75 189.95 238.15 301.05
204.65 277.00 349.25 443.75
251.90 348.30 444.70 570.60
307.65 420.10 532.60 645.00
352.60 487.50 622.45 757.50
442.60 622.45 802.45 982.40
802.40 1,162.251,522.10 1,882.05
1-1/2" 2"
2-1/2"3"
Fax: 651-345-3759
1"
2
3
4
6
12
18
24
48
Length
Thickness
www.acrotechinc.com
800-345-0583
These have more tightly controlled thickness dimensions
than open cast sheets.
&
shapes
Custom vailable!
ea
sizes ar
4"
$73.65 $87.40$102.70$123.30 $159.10
151.75 168.65 238.10 258.10 295.05
217.70 258.10 280.05 371.50 442.60
235.10 295.05 382.65 442.60 535.00
70.45 81.70 93.05 104.30 126.75
113.40 135.90 158.45 180.95 225.85
156.35 190.05 223.86 257.60 325.00
190.05 235.10 280.05 325.00 415.00
257.60 325.00 420.10 487.55 622.45
325.00 415.00 532.60 622.45 802.40
180.95 225.85 280.05 325.00 415.00
257.60 325.00 392.50 460.00 594.95
325.00 415.00 532.60 622.45 802.40
487.55 622.45 757.50 892.40 1,162.25
622.45 802.40 982.401,162.25 1,522.10
386.30 487.55 588.75 689.95 997.40
487.55 622.45 757.50 892.40 1,162.25
690.00 892.401,094.851,297.20 1,702.05
892.40 1,162.251,432.201,702.05 2,241.85
622.45 802.40 982.401,162.25 1,522.10
892.40 1,162.251,432.201,702.05 2,241.85
1,162.25 1,522.101,882.052,241.85 2,961.55
1,432.20 1,882.052,331.852,781.70 3,681.30
1,702.05 2,241.852,781.703,321.40 4,401.00
2,241.85 2,961.553,681.304,401.00 5,840.45
4,401.00 5,840.457,279.908,719.20 11,598.10
23
metric products
Tubes/Springs –
Metric (made to order)
Round Rods –
Metric
(made to order)
Length 500mm
+5/-0mm
Dia.mm
8mm
10
15
20
25
30
40
50
60
70
80
100
Price
$16.90
17.55
19.65
22.60
26.50
31.20
43.20
58.60
77.40
99.65
125.30
186.90
Length 1000mm
+5/-0mm
Price
–
–
$28.70
34.65
42.45
51.80
75.70
106.60
144.20
188.70
240.05
363.20
Note: Metric sizes conform to J.I.S. specifications.
Square & Rectangular
Bars – Metric (made to order)
rsize
ly undhe.
t
h
g
li
S
I.D. – o grip punc
t
.2 mm
th. +/g
L
&
O/D
I.D.
mm
O.D. Lgth.
mm mm Price
I.D.
mm
7
7
7
7
7
8.5
8.5
8.5
8.5
8.5
11
11
11
11
11
11
14
14
14
14
14
14
14
15 25 $1.90
15 30 2.20
15 35 2.45
15 40 2.65
15 500 22.20
20
25
2.20
20
30
2.55
20
35
2.85
20
40
3.15
20 500 28.15
25
25 2.55
25
30 2.95
25
35 3.25
25
40 3.70
25
45 3.90
25 500 34.35
30
25 2.85
30
30 3.40
30
35 3.80
30
40 4.20
30
45 4.55
30
50 4.95
30
55 5.40
14
14
14
14
14
14
14
14
14
14
14
14
14
14
22
22
22
22
22
22
22
22
O.D. Lgth.
mm mm Price
30
30
40
40
40
40
50
50
50
50
60
60
60
60
80
80
80
80
100
100
100
100
60 $6.00
500 41.30
40 5.70
50 6.65
60 8.10
500 58.70
50 7.25
60 8.95
80 11.55
500 64.70
50 9.35
60 11.45
80 15.05
500 85.50
60 17.15
80 22.60
100 26.90
500 130.65
80 33.20
100 39.70
120 49.50
500 194.60
*These sizes fit European style bottom dies.
Width mm
+0 – 0.3
Height mmLength mm
+0 - 0.3
+5 - 0
25
25
*30 25
*50
50
*80
30
75
50
*110
45
24
100
415
500
835
1000
100
415
500
835
1000
100
415
500
835
1000
100
415
500
835
1000
100
415
500
835
1000
100
415
500
835
1000
Price
$11.15
29.60
34.65
52.20
58.70
11.65
31.80
37.30
56.50
64.05
19.30
63.65
75.60
117.70
140.65
18.90
61.65
73.30
114.05
136.00
25.85
90.50
107.95
169.58
205.40
31.00
112.15
134.00
211.25
257.45
SurStrip™ Punch Strippers
Metric (made to order)
Metric Sizes – Stocked with 1/8" dia. air holes
I.D. O.D.
Lgth.
mmmm mm
6
19mm
6
19
6
19
8
21
8
21
8
21
1023
1023
1023
1023
1326
1326
1326
1326
1630
1630
1630
1630
2038
2038
2038
2550
2550
2550
3260
45mm
53
71
45
53
71
45
53
56
71
45
53
56
71
45
53
56
71
45
53
71
45
53
71
45
Part No.
Price
MSS-006045$4.00
MSS-0060534.15
MSS-0060714.55
MSS-0080454.25
MSS-0080534.45
MSS-0080714.70
MSS-0100454.70
MSS-0100534.85
MSS-0100565.00
MSS-0100715.15
MSS-0130454.85
MSS-0130535.15
MSS-0130565.25
MSS-0130715.75
MSS-0160455.00
MSS-0160535.25
MSS-0160565.35
MSS-0160715.75
MSS-0200455.85
MSS-0200536.40
MSS-0200718.20
MSS-0250457.35
MSS-0250537.90
MSS-0250719.80
MSS-03204512.20
tubes/springs
K•Prene® Urethane Tubes/Springs
They do not fragmentize
High load-carrying capability
Protection from marring/galling
Longer life
Oil and solvent resistance (See chart on page 12)
Low noise
Vibration damping and shock absorbance
Effectiveness between -30° F. and 180° F.
The maximum recommended free (unloaded) length is 2.5 times the
springs outside diameter, although springs may be stacked with guide
rods and washer-shaped spacers.
Suggested maximum cyclic frequencies and deflection percentages of
free length are summarized by the following for 95A Durometer Tubes/
Springs.
Maximum Deflection
Slow speeds or
short runs
Less than 25%
200
Intermittent
Up to 25%
700
Continuous
Up to 15%
12,000
Caps
Caps Specifications
Grade - K-750D, very tough, hard urethane.
Can be drilled, pierced or machined to fit the
punch for positive stripping while dampening
vibration. Will not mar prefinished stocks.
I.D. - Press fit to spring.
Length
(Use vise or arbor press to assemble
caps and springs).
Cycle Per Hour
O.D.
I.D.
O.D.
Cap
O.D.
1"
1-1⁄8
1-1⁄4
1-3⁄8
1-1⁄2
1-5⁄8
1-3⁄4
2-1⁄8
2-3⁄8
2-7⁄8
Cap
I.D.
3/4"
7/8
1
1-1⁄8
1-1⁄4
1-3⁄8
1-1⁄2
1-3⁄4
2
2-1⁄2
Order
No.
Price
KPC-1000$4.20
KPC-11084.65
KPC-11044.75
KPC-13084.95
KPC-11025.60
KPC-15085.90
KPC-13046.60
KPC-21087.35
KPC-23088.20
KPC-27089.90
Washers, Seals & Gaskets
Almost any O.D./I.D. combination can be supplied.
We have provided parts from 1/4" dia. to 6" dia. in quantities
of thousands to just a few pieces. Material, size, color, etc.,
all supplied to your specifications.
Bulk or specific quantity packaging is available.
Contact Acrotech for details.
25
Fax: 651-345-3759
100% load-bearing surface
Example: A 1.50" long spring is to be deflected by 15% or .225". The
diameter will then also increase roughly by .225". The material’s lateral
expansion must be considered for many applications.
www.acrotechinc.com
Abrasion resistance
The K•Prene® urethane Tube/Spring material is a polyether-elastomer
that reacts similarly to an incompressible fluid. The volume of material
moved by compression is displaced laterally in the form of bulging sides.
An approximate change in the diameter of our K•Prene® urethane Tubes/
Springs can be made by increasing the diameter by the same amount of
compression.
800-345-0583
Advantages of urethane
Tubes/Springs vs. conventional springs:
Stocked in 95A Durometer, tubes/springs are useful in applications
where vibration, corrosion and magnetism prevent the use of steel
springs. Also, urethane springs have proven to be safest, most efficient
and reliable compression material for punching, stamping and drawing
dies.
tubes/springs
Tubes/Springs
(metric sizes on page 24).
Stocked in K-950A. A minimum order of the 12" or 24" length
is required when ordering any other durometer.
&
shapes
Custom vailable!
ea
sizes ar
.
.D
O
.
I.D
Length
Fits
unch
P
Body
Diam. O.D. Lgth. Order No.
Lb. Lb. Lb.
Per Per Per
1/8" 3/8"1/2"
Def. Def. Def. Price
3/16" 11/16"1-1/4" KPS-0316H01104 220
- 1036 $2.55
High1-1/2KPS-0316H01102 200
- 904 2.75
Press. 12KPS-0316
H12000*--
15.55
1/4" 3/4"
1" KPS-0104H01000 325
- 1101 2.35
High1-1/4KPS-0104 H01104 250
- 975 2.85
Press.1-1/2 KPS-0104 H01102 215
- 790 3.05
1-3/4KPS-0104 H01304 183
- 703 3.80
12KPS-0104 H12000*--
18.10
7/8"
1"KPS-0104 V01000 4751294
- 2.45
Very1-1/4KPS-0104 V01104 3501131
- 2.95
High1-1/2KPS-0104 V01102 3021022
- 3.25
Press.1-3/4 KPS-0104 V01304
275--
4.00
12KPS-0104 V12000*--
19.45
1"
1"KPS-0104 U01000 712 1543
- 2.55
Ultra 1-1/4 KPS-0104 U01104 547 1266
- 3.15
High1-1/2KPS-0104 U01102 399 1082
- 3.50
Press.1-3/4 KPS-0104 U01304 348 933
- 4.35
12KPS-0104 U12000
*
-
- 21.00
5/16" 13/16" 1-1/4" KPS-0516 H01104 280
-1037 3.05
High1-1/2KPS-0516 H01102 255
- 936 3.40
Press.1-3/4 KPS-0516 H01304 235
- 863 3.80
2KPS-0516 H02000 225
- 809 4.20
12KPS-0516 H12000*--
20.60
3/8" 7/8"
1" KPS-0308 H01000 444
-1027 2.75
High1-1/4KPS-0308 H01104 347
- 957 3.40
Press.1-1/2 KPS-0308 H01102 275
- 910 3.70
1-3/4KPS-0308 H01304 224
- 876 4.20
2KPS-0308 H02000 199
- 851 4.65
12KPS-0308 H12000*--
23.10
1"
1"KPS-0308 V01000 5751501
- 2.85
Very1-1/4KPS-0308 V01104 4751265
- 3.60
High1-1/2KPS-0308 V01102 3891108
- 3.90
Press.1-3/4 KPS-0308 V01304 325 998
- 4.45
2KPS-0308 V02000 286 912
- 4.95
12KPS-0308 V12000*--
24.70
1-1/8" 1"KPS-0308 U01000 800 2071 -3.05
Ultra 1-1/4 KPS-0308 U01104 593 1729
- 3.80
High1-1/2KPS-0308 U01102 522 1501
- 4.10
Press.1-3/4 KPS-0308 U01304 450 1338
- 4.75
2KPS-0308 U02000 387 1215
- 5.25
12KPS-0308 U12000
*
-
- 26.50
26
Fits
unch
P
Body
Diam. O.D. Lgth. Order No.
1/2"1" 1"
KPS-0102H01000
High1-1/4 KPS-0102H01104
Press.1-1/2 KPS-0102H01102
1-3/4KPS-0102H01304
2KPS-0102H02000
24KPS-0102H24000
1-1/8" 1"KPS-0102V01000
Very1-1/4KPS-0102V01104
High1-1/2 KPS-0102V01102
Press.1-3/4 KPS-0102V01304
2KPS-0102V02000
24KPS-0102V24000
1-1/4" 1"KPS-0102U01000
Ultra 1-1/4 KPS-0102U01104
High1-1/2 KPS-0102U01102
Press.1-3/4 KPS-0102U01304
2KPS-0102U02000
24KPS-0102U24000
5/8" 1-1/8"
1" KPS-0508H01000
High1-1/4 KPS-0508H01104
Press.1-1/2 KPS-0508H01102
1-3/4KPS-0508H01304
2KPS-0508H02000
24KPS-0508H24000
1-1/4" 1"KPS-0508V01000
Very1-1/4KPS-0508V01104
High1-1/2 KPS-0508V01102
Press.1-3/4 KPS-0508V01304
2KPS-0508V02000
24KPS-0508V24000
1-3/8" 1"KPS-0508U01000
Ultra 1-1/4 KPS-0508U01104
High1-1/2 KPS-0508U01102
Press.1-3/4 KPS-0508U01304
2KPS-0508U02000
24KPS-0508U24000
Lb. Lb. Lb.
Per Per Per
1/8" 3/8"1/2"
Def. Def. Def. Price
512
- 1143 $2.65
340
- 1025 3.05
325
- 946 3.50
275
- 878 4.00
250
- 834 4.35
*
-
- 38.85
681 1709
- 2.85
525 1475
- 3.40
424 1318
- 3.80
350 1207
- 4.45
320 1123
- 4.65
*
-
- 43.40
8632188
- 3.05
6751793
- 3.60
5501529
- 4.10
4921341
- 4.75
4501200
- 5.05
*
-
- 48.30
562
- 1224 2.85
446
- 1169 3.40
375
- 1133 3.80
323
- 1107 4.45
295
- 1087 4.75
*
-
- 43.60
794 1855 -3.05
600 1624
- 3.60
510 1310
- 4.10
424 1232
- 4.85
384 1185
- 5.15
*
-
- 48.65
975 2462 -3.30
775 2129 -3.90
6401907
- 4.45
5461749
- 5.25
489 1630 -5.60
*
-
- 54.10
See stocked inventory dimension tolerances for rods,
squares and rectangulars on page 4.
tubes/springs
800-345-0583
Lb. Lb. Lb.
Per Per Per
1/8" 3/8"1/2"
Def. Def. Def. Price
Lb. Lb. Lb.
Per Per Per
1/8" 3/8"1/2"
Def. Def. Def. Price
1" 1-3/4"1-1/4" KPS-1000H01104 1137
- 2782 $4.45
High1-1/2
KPS-1000H01102 940
- 2588 5.05
Press.1-3/4KPS-1000H01304 788
- 2450 6.00
2
KPS-1000H02000 689
- 2346 6.45
2-1/4
KPS-1000H02104 616
- 2265 7.50
2-1/2
KPS-1000H02102 548
- 2201 8.20
2-3/4
KPS-1000H02304 505
- 2148 9.15
24
KPS-1000H24000
*
-
- 64.30
2" 1-1/4"
KPS-1000V01104 1550 4111
- 5.15
Very1-1/2
KPS-1000V01102 1200 3330
- 6.00
High1-3/4
KPS-1000V01304 971 2911
- 7.15
Press.
2
KPS-1000V02000 854 2624
- 7.60
2-1/4
KPS-1000V02104 770 2367
- 8.95
2-1/2
KPS-1000V02102 700 2262
- 9.80
2-3/4
KPS-1000V02304 636 2121
- 10.10
3
KPS-1000V03000 569 1985
- 10.95
4
KPS-1000V04000 423 1963
- 14.20
24
KPS-1000V24000
*
-
- 78.55
2-1/2"1-1/4" KPS-1000U01104 2593
-
- 6.95
Ultra 1-1/2 KPS-1000U01102 2136 4582
- 8.10
High1-3/4
KPS-1000U01304 1796 4129 -9.70
Press.
2
KPS-1000U02000 1524 3790 -10.40
2-1/4
KPS-1000U02104 1316 3525
- 12.30
2-1/2
KPS-1000U02102 1212 3314 -13.55
2-3/4
KPS-1000U02304 1106 3061
- 14.00
3
KPS-1000U03000 996 2851
- 15.15
4
KPS-1000U04000 734 2272
- 19.85
24
KPS-1000U24000
*
-
- 112.60
1-1/4" 2-1/2"2"
KPS-1104H02000 1860
-
- 10.95
High2-1/4
KPS-1104H02104 1750
-
- 12.95
Press.2-1/2KPS-1104H02102 1675
-
- 14.20
2-3/4
KPS-1104H02340 1530
-
- 14.60
3
KPS-1104H03000 1380
-
- 15.90
24
KPS-1104H24000
*
-
- 118.25
1-1/2" 2-3/4"2"
KPS-1102H02000 2105
-
- 11.70
High2-1/4
KPS-1102H02104 1980
-
- 13.90
Press.2-1/2KPS-1102H02102 1900
-
- 15.25
2-3/4
KPS-1102H02304 1730
-
- 15.75
3
KPS-1102H03000 1565
-
- 17.05
24
KPS-1102H24000
*
-
- 127.70
See stocked inventory dimension tolerances for rods,
squares and rectangulars on page 4.
27
Fax: 651-345-3759
3/4" 1-3/8" 1-1/4" KPS-0304H01104 747
- 1725 $3.90
High1-1/2KPS-0304H01102 642
- 1623 4.45
Press.1-3/4KPS-0304H01304 554
- 1550 5.15
2KPS-0304H02000 479
- 1495 5.60
2-1/4KPS-0304H02104 417
- 1452 6.40
2-1/2"KPS-0304H02102 380
- 1418 7.05
24KPS-0304H24000
*
-
- 53.90
1-1/2"1-1/4" KPS-0304V01104 975 2390
- 4.20
Very1-1/2KPS-0304V01102 810 2105
- 4.85
High1-3/4KPS-0304V01304 688 1902
- 5.70
Press.
2KPS-0304V02000 591 1749
- 6.10
2-1/4KPS-0304V02104 529 1631
- 7.05
2-1/2KPS-0304V02102 475 1536
- 7.70
2-3/4KPS-0304V02304 418 1458
- 8.55
24KPS-0304V24000
*
-
- 59.85
1-3/4"1-1/4" KPS-0304U01104 1400 3382
- 4.95
Ultra 1-1/2 KPS-0304U01102 1200 3191
- 5.70
High1-3/4KPS-0304U01304 1015 2841
- 6.75
Press.
2KPS-0304U02000 896 2578
- 7.15
2-1/4KPS-0304U02104 796 2373
- 8.40
2-1/2KPS-0304U02102 707 2210
- 9.25
2-3/4KPS-0304U02304 551 2076
- 10.30
24KPS-0304U24000
*
-
- 73.60
7/8" 1-5/8" 1-1/2" KPS-0708H01102 855
- 2363 4.55
High1-3/4KPS-0708H01304 780
- 2213 5.40
Press.
2KPS-0708H02000 745
- 2141 5.70
2-1/4KPS-0708H02104 700
- 2072 6.75
2-1/2KPS-0708H02102 670
- 1846 7.35
2-3/4KPS-0708H02304 610
- 1741 7.60
3KPS-0708H03000 560
- 1720 8.20
24KPS-0708H24000
*
-
- 59.15
1-3/4"1-1/2" KPS-0708V01102 1045 3202
- 4.95
Very1-3/4KPS-0708V01304 955 2780
- 5.90
High
2KPS-0708V02000 910 2464
- 6.30
Press.2-1/4KPS-0708V02104 855 2218
- 7.35
2-1/2KPS-0708V02102 820 2021
- 8.10
2-3/4KPS-0708V02304 750 1880
- 8.30
3KPS-0708V03000 675 1726
- 9.05
24KPS-0708V24000
*
-
- 65.55
2" 1-1/2"KPS-0708U01102 1475 4079
- 5.80
Ultra 1-3/4 KPS-0708U01304 1345 3830 -6.95
High
2KPS-0708U02000 1285 3294 -7.50
Press.2-1/4KPS-0708U02104 1205 3032
- 8.75
2-1/2KPS-0708U02102 1155 2823
- 9.70
2-3/4KPS-0708U02304 1055 2652
- 10.00
3KPS-0708U03000 955 2508
- 10.75
24KPS-0708U24000
*
-
- 79.70
Fits
unch
P
Body
Diam. O.D. Lgth. Order No.
www.acrotechinc.com
Fits
unch
P
Body
Diam. O.D. Lgth. Order No.
(metric sizes on page 24).
Length
.
I.D
Tubes/Springs
.
.D
O
tubes/springs
Tubes and springs are made to order. Common sizes are listed below; if you don’t
see the size you are looking for, contact us and we will make it for you.
See stocked inventory dimension tolerances for rods, squares and rectangulars on page 4.
12" Lengths
I.D.
O.D.
Price
1/8"3/8" $13.30
1/8
1/2
13.95
1/8
3/4
15.80
1/8
1-1/8
21.65
1/8
1-1/2
25.65
1/8
1-3/4
30.40
3/16 5/8
15.10
3/16 3/4
16.10
3/16 7/8
17.30
3/16 1
18.70
3/16 1-1/2
26.00
1/4
5/8
17.10
1/4
1-1/8
22.55
1/4
1-1/4
24.30
1/4
1-1/2
28.30
1/4
1-5/8
30.60
9/32 1
20.90
5/16 9/16
18.60
5/16 5/8
19.05
5/16 3/4
20.05
5/16 7/8
21.20
5/16 15/16
21.90
5/16 1
22.60
5/16 1-1/8
24.15
5/16 1-1/4
25.90
5/16 1-1/2
29.90
5/16 1-3/4
34.65
5/16 2
40.10
3/8
5/8
20.90
3/8
3/4
21.90
3/8
13/16
22.50
3/8
15/16
24.00
3/8
1-1/4
28.25
3/8
1-3/8
30.15
3/8
1-1/2
32.25
3/8
1-3/4
37.00
3/8
2
42.45
3/8
2-1/2
55.60
3/8
3
71.65
25/64 7/8
23.00
7/16 3/4
21.60
28
24" Lengths
I.D.
O.D.
Price
7/16"7/8" $36.95
7/16 1
39.50
7/16 1-1/4
45.60
7/16 1-3/8
49.15
7/16 1-1/2
53.05
1/2
3/4
34.10
1/2
7/8
36.30
1/2
1-3/8
51.85
1/2
1-1/2
55.75
1/2
1-3/4
64.55
1/2
1-13/1666.95
1/2
2
74.70
1/2
2-1/2
99.10
1/2
3
128.95
1/2
3-1/4 137.25
33/64 13/16
35.05
33/64 1
38.70
33/64 2
71.25
9/16 3/4
33.40
9/16 1
38.15
9/16 1-1/4
44.25
9/16 1-3/8
47.80
9/16 2
70.70
9/16 2-1/2
95.10
9/16 3
124.95
5/8
3/4
36.00
5/8
1
40.75
5/8
1-1/2
58.00
5/8
1-5/8
62.25
5/8
1-3/4
66.85
5/8
2
77.05
5/8
2-1/8
82.65
5/8
2-1/4
88.60
5/8
2-1/2 101.50
41/64 1
40.55
41/64 1-1/8
46.65
41/64 1-3/8
50.20
41/64 1-3/4
62.90
41/64 2
73.10
21/32 1
40.35
11/16 1-1/4
46.00
3/4
7/8
41.75
3/4
1
44.30
3/4
1-1/8
47.15
3/4
1-1/4
50.35
3/4
1-13/1676.05
3/4
1-7/8
78.55
I.D.
O.D.
Price
3/4" 2"
$83.80
3/4
2-1/4
95.35
3/4
2-1/2 108.25
3/4
2-3/4 122.50
3/4
3
138.10
13/16 1-1/2
58.80
13/16 1-3/4
67.60
27/32 3-1/8 144.80
7/8
1-1/8
44.25
7/8
1-1/4
47.45
7/8
1-3/8
51.00
7/8
1-1/2
54.90
7/8
1-11/1663.25
7/8
2-1/16 82.45
7/8
2-1/2 104.10
7/8
3
133.95
7/8
3-1/4 150.90
7/8
3-1/2 169.20
1
1-1/4
48.05
1
1-3/8
49.70
1
1-1/2
55.50
1
2-1/4
90.10
1
3
142.45
1
3-1/16 146.55
1
3-1/4 159.40
1
3-1/2 177.70
1
3-3/4 197.40
1
4
218.45
1-1/161-3/4
62.90
1-1/162
73.05
1-1/162-1/4
84.60
1-1/162-1/2
97.50
1-3/322-1/4
83.90
1-1/8 1-3/8
48.75
1-1/8 1-1/2
52.65
1-1/8 1-5/8
56.90
1-1/8 1-3/4
61.50
1-1/8 2
71.70
1-1/8 2-1/4
83.25
1-1/8 2-9/16 99.60
1-1/8 3
126.00
1-1/4 1-1/2
49.45
1-1/4 1-5/8
79.15
1-1/4 1-3/4
83.70
1-1/4" 1-7/8" $88.60
1-1/4 2
93.85
1-1/4 2-3/4 132.50
I.D.
O.D.
Price
1-1/4" 3"
$148.10
1-1/4 3-1/4 165.05
1-3/8 1-3/4
80.15
1-3/8 1-7/8
85.10
1-3/8 2
90.35
1-3/8 2-1/2 114.75
1-3/8 3-1/4 161.55
1-3/8 3-1/2 179.85
1-1/2 1-7/8
83.85
1-1/2 2
89.10
1-1/2 2-1/4 100.60
1-1/2 2-1/2 113.45
1-1/2 3
143.30
1-1/2 3-1/2 178.55
1-1/2 4
219.25
1-5/8 2
84.90
1-5/8 2-1/4
90.50
1-5/8 2-1/2 109.35
1-5/8 3
139.20
1-3/4 2-1/4
91.80
1-3/4 2-3/8
98.10
1-3/4 2-1/2 104.70
1-3/4 3
134.55
1-3/4 3-1/4 151.50
1-7/8 3
129.65
1-7/8 3-1/2 164.90
2
2-1/2
94.55
2
2-3/4 108.80
2
3
124.40
2
3-1/4 141.35
2
3-1/2 159.70
2
4
200.40
2-1/163-1/4 138.60
2-1/164
197.60
2-1/164-5/8 256.10
2-1/8 3
118.80
2-1/4 3
112.90
2-1/4 3-1/2 148.15
2-1/4 4
188.85
2-3/8 3
106.65
2-3/8 4
182.60
2-1/2 3
135.30
2-1/2 4
176.00
3
4
146.15
3
5
243.80
4
5
104.85
bumpers
Round Bumpers
800-345-0583
These bumpers have steel cores with male or female threads.
Bumpers are stocked in K-400A, K-600A, K-800A, K-900A, and K-950A.
Specifications
B
Thread
C
Part No.
1-24
A
C
1"
1-1/4
1-1/2
2
2-1/2
3
B
A
ROF
Female Thread
1"
1
1-1/4
1-1/4
2
2-1/2
50+
1/4-20.750"
ROM-001$3.95$3.75 $3.60
1/4-20.750ROM-0024.504.25 4.05
3/8-16.875ROM-0035.405.20 5.00
3/8-16.875ROM-004 7.206.95 6.50
1/2-131.00ROM-005 13.1012.50 11.90
1/2-131.00ROM-006 21.9520.90 19.90
www.acrotechinc.com
ROM
Male Thread
Prices
25-49
B
A
Fax: 651-345-3759
1"
1"
1/4-20— ROF-001 $3.60$3.35 $3.20
1-1/41
1/4-20— ROF-002 4.103.95 3.75
1-1/21-1/4 3/8-16— ROF-003 4.904.60 4.35
2
1-1/4 3/8-16— ROF-004 6.606.25 6.00
2-1/22
1/2-13— ROF-005 12.1511.60 11.05
3
2-1/2 1/2-13— ROF-006 21.0020.00 19.05
Rectangular & Square Bumpers
Base is 1/8" aluminum plate. Mounting holes are drilled and counterbored
for 1/4" socket head cap screws. Stocked in K-400A, K-600A, K-800A,
K-900A and K-950A.
B
D
E
A
C
REC
Rectangular
H
I
F
G
1/2"
1/2"
A
Specifications
B
C
D
E
Part No.
1-24
1"
1
1
1
1-1/4
1-1/4
1-1/4
1-1/2
1-1/2
1-1/2
2"
2
2
2
2-1/2
2-1/2
2-1/2
3
3
3
1/2"
3/4
1
1-1/2
3/4
1
1-1/2
3/4
1
1-1/2
H
G
1"
1-1/2
2
2-1/2
3
4
3/4" 1 Hole-Centered
1
3/8"
3/4"
1
3/8
1-1/4
1
Hole Centers
1-1/2
are 1/2" from
1-1/2
each edge.
A
C
B
A
1-1/4"
1-1/4
1-1/4
1-1/4
1-3/4
1-3/4
1-3/4
2
2
2
F
&
shapes
Custom vailable!
ea
sizes ar
RON
Flat Washer
3/8"
3/8
3/8
3/8
3/8
3/8
3/8
1/2
1/2
1/2
I
Prices
25-49
50+
REC-001$4.40 $4.20$4.00
REC-0024.95 4.754.50
REC-0035.40 5.205.00
REC-0046.45 6.155.90
REC-0055.95 5.605.35
REC-0066.70 6.356.10
REC-0078.30 7.907.50
REC-0086.95 6.606.25
REC-0098.04 7.607.30
REC-01010.35 9.80 9.40
Part No.
1-24
25-49
50+
SQU-001$3.85 $3.70 $3.50
SQU-0025.15 4.90 4.70
SQU-0037.45 7.10 6.70
SQU-00410.25 9.70 9.30
SQU-00517.45 16.6015.85
SQU-00627.45 26.2024.95
Washers
These round bumpers have a flat washer molded into the bumper and will
accept a socket head cap screw of the size indicated. Stocked in K-400A,
K-600A, K-800A, K-900A, and K-950A.
Specifications
B
Thread
C
Part No.
1-24
Prices
25-49
50+
3/4"3/4" 1/4" .500"
RON-001$2.70 $2.60 $2.45
1 1
1/4.500
RON-0023.40 3.25 3.10
1-1/41
3/8 .750
RON-0033.90 3.70 3.50
1-1/21-1/4 3/8 .750
RON-0044.80 4.50 4.30
2 1-1/41/2 .750
RON-0056.40 6.15 5.90
2-1/22
1/2 .750
RON-00612.00 11.40 10.90
3 2-1/21/2 .750
RON-00718.80 18.00 17.10
29
versa roll™
Versa Roll™
A Revolutionary Concept for the Manufacture of Rollers,
Casters & Wheels
Our super tough urethane material forms the functional outer hub of the roller, caster, or wheel.
It readily absorbs shock and resists cutting. This material is bonded to a second material, which
functions as the roller, caster, or wheel’s very durable inner bearing. These two bonded materials
provide the wear resistance and durability that bring extraordinary performance. The Versa Roll™
is manufactured in a uniform roll, which allows the user to simply cut off pieces at the lengths
necessary to become their needed rollers, casters, or wheels.
End users of our Versa Roll™ products discover the unique versatility and shock absorbing toughness
of this product. The rollers, casters, and wheels developed from Versa Roll™ require a much lower level
of maintenance in each type of application in which they are used.
Moving Materials — The level of automation in today’s manufacturing environment continues to grow rapidly.
The movement of materials using rollers, casters, and wheels is the most significant contribution to the savings in
labor in today’s manufacturing facilities. The Versa Roll™ brings a simple and highly-flexible roller, caster, and wheel solution that will
fit existing material handling formats, and can also be used to move your facility into the next generation of material moving efficiencies.
Maintenance Responsiveness — No longer do maintenance staff need to look up replacement parts in a catalog or wait precious days or
weeks for the parts to arrive. With Versa Roll™, your replacement products are each only one band saw cut away. The versatility of Versa Roll™
allows the fabrication of nearly any rolling component on the spot. The resulting replacement component oftentimes last longer than the part
that it replaced.
Manufacturer Value — Versa Roll’s durability and productivity, combined with its low cost, offers manufacturers a value that they can’t find
anywhere else.
Versa Roll™ Advantages:
Maintenance Cost: Versa Roll’s most compelling characteristic is its versatility. Maintenance staff, with the proper Versa Roll™ products
in inventory, can get back up and running in no time. Both the outside diameter and the inside diameter of each Versa Roll™ can be easily
machined to develop custom sizes that fit like a glove and work like a horse. This versatile product gives you unmatched control over roller,
coaster, and wheel maintenance, allowing you to minimize maintenance supply inventory, and introduce replacement parts that often
outperform the parts you replace.
Impact Absorption: Unlike metal roller, coaster, and wheel hubs, Versa Roll™ parts absorb shock. This characteristic extends the wear of
Versa Roll™ parts. Metal parts tend to bang and pound when shock is introduced, resulting in lost concentricity, increased brittleness, and
broken parts. Versa Roll™ parts are constructed of shock absorbing materials that minimize impact-driven damage, extending the life of your
parts.
Lubrication-Free Applications: In many plant situations where lower levels of stress or speed are placed upon your material conveying equipment, Versa Roll™ parts can be run lubrication-free. Our product also brings peace of mind to plan managers who need material
conveyed in a way that keeps a clean environment. Versa Roll™ allows a clean environment to remain clean, completely avoiding dirty oil or
grease dripping.
Low Weight: Conveyor systems on aircraft and in other situations oftentimes require weights to be minimized. Compared to roller parts
fashioned with metal hubs, often constructed of aluminum or metal alloys, Versa Roll™ parts are lighter in weight. This allows you to cut
conveyor weight, while maintaining or improving performance.
Clean Operation: Metal bearings are collection points for dirt, dust, and grime that emanated from a dusty or dirty work environment.
These collected contaminants often lead to expedited wear of these bearings and rollers. Versa Roll™ expels the dirt and grime from the
roller parts, stepping up the cleanliness of the conveying system.
Easy to Install: Versa Roll’s hub (bearing) component makes installation of rollers, coasters, and wheels a snap! Simple standard cold
roll steel can be used for shaft fabrication. Shaft diameters and Versa Roll™ parts can quickly and easily be matched for excellent, smoothrunning operation. Selecting polished shafts extend the life of Versa Roll™ parts, even more!
Quiet Running: No more metal clanging or screeching. Versa Roll™ ends the noisy work environment by bringing significant reductions
to roller and material handling noise.
Moisture, Oil, and Solvent Resistant: The adjoining table outlines the benefits of these excellent Versa Roll™ characteristics.
Mark-Free: Versa Rolls do not mark or scratch conveyed products, like many rubber and metal rollers do.
No Flat Spotting: Leaving some rubber and plastic parts under a stationary load for extended periods can cause permanent flat spots
on the rollers. Versa Rolls recover their shape more quickly and more completely than rubber rollers do. Conversely, plastics do not recover,
as the roller damage to those materials is often permanent.
30
versa roll
Versa Roll™
Tire
800-345-0583
Nominal OD’s 1-1/2"– 6" +
_ 2%
&
shapes
Custom vailable!
ea
sizes ar
I.D.’s are slightly oversized to
provide running clearance for 3/8" to 1" shafts.
Hub
• Two grades of tough K•Prene®
urethane permanently bonded
together, resulting in a hard
anti-friction hub with softer
outer tire.
• Stocked with a K-900A outer
tire and an anti-friction K-750D
hub.
• K-750D hub can serve as a
bearing in some applications.
• ID’s, OD’s, lengths and profiles
can be machined to fit your
application.
• Use to make low cost OEM
components for your
manufactured products.
• For special applications, other
durometers are available.
Bearing
Prices
O.D.
I.D.
Part No.
12" length 24" length
1-1/2" 3/4"
3/8" KVR-15075375
1
No Bore
KVR-1510000
1
3/8
KVR-1510375
1
1/2
KVR-1510500
1
3/4
KVR-1510750
1-3/4
1
3/8
KVR-17510375
1-7/81
1/2KVR-187510500
2
1
1/4
KVR-2010250
1
3/8
KVR-2010375
1
1/2
KVR-2010500
1-1/2
3/8
KVR-2015375
1-1/2
1/2
KVR-2015500
1-1/2
5/8
KVR-2015625
1-1/2
3/4
KVR-2015750
1-1/2
7/8
KVR-2015875
1-1/2
1
KVR-2015100
2-1/2
1-1/2
3/8
KVR-2515375
1-1/2
1/2
KVR-2515500
1-1/2
5/8
KVR-2515625
1-1/2
3/4
KVR-2515750
1-1/2
1
KVR-2515100
2-3/4
1-1/2
1/2
KVR-27515500
1-1/25/8 KVR-27515625
3
1-1/2
No Bore
KVR-3015000
1-1/2
3/8
KVR-3015375
1-1/2
1/2
KVR-3015500
1-1/2
5/8
KVR-3015625
1-1/2
3/4
KVR-3015750
2
1
KVR-3020100
3-1/2
1-1/2
3/8
KVR-3515375
1-1/2
1/2
KVR-3515500
1-1/2
5/8
KVR-3515625
1-1/2
3/4
KVR-3515750
2-1/2
3/4
KVR-3525750
3-3/4
2
1
KVR-37520100
4
1-1/2
3/8
KVR-4015375
1-1/2
1/2
KVR-4015500
1-1/2
5/8
KVR-4015625
1-1/2
3/4
KVR-4015750
2
1
KVR-4020100
3
1
KVR-4030100
4-1/2
2
1
KVR-4520100
5
1-1/2
3/8
KVR-5015375
1-1/2
1/2
KVR-5015500
1-1/2
5/8
KVR-5015625
1-1/2
3/4
KVR-5015750
2
1
KVR-5020100
6
1-1/2
3/8
KVR-6015375
1-1/2
1/2
KVR-6015500
1-1/2
5/8
KVR-6015625
1-1/2
3/4
KVR-6015750
2
1
KVR-6020100
6-1/2
5
1-1/2 KVR-6550150
$41.65
41.65
41.65
41.65
—
45.70
48.10
50.40
50.40
50.40
50.40
50.40
50.40
50.40
—
—
65.00
65.00
65.00
65.00
—
70.65
—
—
80.25
80.25
80.25
80.25
—
102.10
102.10
102.10
102.10
112.50
112.35
122.75
122.75
122.75
122.75
122.75
—
—
177.40
177.40
177.40
177.40
177.40
255.30
255.30
255.30
255.30
255.30
—
—
—
—
—
$79.30
—
—
—
—
—
—
—
90.85
90.85
90.85
104.90
—
—
117.50
117.50
150.95
—
131.95
151.65
—
—
146.45
146.45
169.10
—
—
188.10
188.10
—
207.90
—
—
227.45
227.45
227.45
273.00
297.70
—
—
332.00
332.00
332.00
—
—
479.00
479.00
479.00
671.85
Fax: 651-345-3759
A low-cost alternative
for wheels, casters,
rollers, sheaves, etc.
Nominal
O.D.
www.acrotechinc.com
31
custom products
Metal Backed Sheets
Cut, drill, and saw these sheets to suit your needs. Make your own bumpers,
wear pads, machinery mounts, etc., in any standard durometer. Backing is
10 ga. (.135) mild steel. Available in any standard durometer.
Other backings or urethane thicknesses available.
Urethane Thickness
6" x 6"
1/4"
3/8
1/2
5/8
3/4
7/8
1
12" x 12"
24" x 24"
$52.00 $90.00$263.00
60.00105.00 315.00
69.00121.00 368.00
77.00137.00 420.00
86.00153.00 473.00
94.00168.00 525.00
102.00184.00 587.00
Custom
Bumpers
Solid Urethane Balls
Can be used for check valves, relief vales, light load ball bearings, etc.
Made to order in several durometers and offerd in different colors,
including natural. Please specify durometer.
Specifications
Prices
Part No.
Diameter
Ball-0304 3/4"
Ball-1000 1
Ball-1102 1-1/2
Ball-1508 1-5/8
Ball-2000 2
Ball-2102 2-1/2
Ball-2508 2-5/8
Ball-3000 3
1-24
25-49
$3.10
3.90
4.90
5.10
7.30
10.80
11.50
14.90
50+
$2.80$2.50
3.503.10
4.404.00
4.704.20
6.605.90
9.708.60
10.609.50
14.1513.40
FDA Approved Polyurethane
Acceptable for repeated contact with food under section #177.2600, subpart
F, and can be used in continuous and repetitive contact with dry, aqueous and
fatty foods. Typical features of these urethanes include outstanding abrasion
resistance, high tensile and tear strength, and excellent load bearing capabilities.
Applications include:
Conveyor Systems
Chutes and Chute Liners
Inspection Tables
Custom Molded Parts
Physical
Properties
32
Hardness, Shore A
100% Modulus, PSI 300% Modulus, PSI Tensile, PSI Elongation, %
Split Tear, D-470, PLI Tear, Die C, PLI Bashore Resilience, %
Color
Rollers and Wheels
Bumpers and Feet
Hoppers and Transfer Systems
Gaskets and Seals
K-551A K-651A
K-751A K-853A
K-954A
55
65
75
85
94
210
320
450
750
1500
320
580
950
1800
NA
3000
430
5600
6200
7800
560
500
460
430
430
50
65
75
100
140
180
240
330
500
760
53
44
38
34
24
White White WhiteWhite White
Acrotech has made bumpers
in countless shapes and sizes.
Contact our applications
department with any possible
applications you would like
to discuss. In addition to a
general description, a print
or a sketch, sample parts
would be helpful if available.
press brake die
Press Brake Dies
800-345-0583
K•Prene® urethane female dies are designed for production and will not leave die
marks! They feature tremendous load-bearing capacity and excellent resistance to
abrasion. These are manufactured in 48" lengths and can be butted together as
needed. They are lightweight, easy to handle, stocked for immediate delivery and
may be shipped via UPS.
90 Degree Dies
Dimensions
1/4"
KBDV-0104-12$34.20
KBDV-0104-2458.95
KBDV-0104-3685.45
KBDV-0104-48110.30
12"
24
36
48
KBDV-0308-1234.20
KBDV-0308-2458.95
KBDV-0308-3685.45
KBDV-0308-48110.30
12"
24
36
48
KBDV-0102-1234.20
KBDV-0102-2458.95
KBDV-0102-3685.45
KBDV-0102-48110.30
12"
1-7/8" TYP 24
36
48
1-3/4" TYP
KBDV-0508-1245.20
KBDV-0508-2483.00
KBDV-0508-36119.00
KBDV-0508-48155.30
1-3/4" TYP
3/8"
Up to
18ga. M.S.
1/2"
Up to
16ga. M.S.
Up to
14ga. M.S.
85 Degree Dies
Price
12"
24
36
48
1-1/4" TYP
5/8"
Part No.
Dimensions
Lgth.
KBDV-1104-12$79.40
KBDV-1104-24143.10
KBDV-1104-36205.50
KBDV-1104-48265.60
12"
24
36
48
KBDV-1102-1279.40
KBDV-1102-24143.10
KBDV-1102-36205.50
KBDV-1102-48265.60
12"
24
36
48
KBDB-0000-1279.40
KBDB-0000-24143.10
KBDB-0000-36205.50
KBDB-0000-48265.60
2-1/2" TYP
1-1/2"
BLANK
DIE
Can be
machined
for custom
2" applications.
Ask for
a quote.
2-1/2"
30 Degree Dies
Dimensions
Lgth.
1-3/4" TYP
1/4"
3/4"
Up to
13ga. M.S.
7/8"
Up to
12ga. M.S.
1"
Up to
11ga. M.S.
12"
24
36
48
Up to
22ga. M.S.
KBDV-0304-1245.20
KBDV-0304-2483.00
KBDV-0304-36119.00
KBDV-0304-48155.30
3/8"
12"
24
36
48
Up to
18ga. M.S.
KBDV-0708-1250.75
KBDV-0708-2491.75
KBDV-0708-36136.30
KBDV-0708-48173.55
Up to
16ga. M.S.
KBDV-1000-1250.75
KBDV-1000-2491.75
KBDV-1000-36136.30
KBDV-1000-48173.55
Note: All dies have standard 1/2" x 5/8" tang.
Part No.
Price
12"
24
36
48
KBDA-0104-12$34.20
KBDA-0104-2458.95
KBDA-0104-3688.45
KBDA-0104-48110.30
12"
24
36
48
KBDA-0308-1234.20
KBDA-0308-2458.95
KBDA-0308-3685.45
KBDA-0308-48110.30
12"
KBDA-0102-1245.20
1-7/8" TYP 24 KBDA-0102-2483.00
1/2"
12"
24
36
48
Price
12"
24
2" TYP
36
48
Up to
12ga. S.S.
1-1/4"
Part No.
5/8"
Up to
14ga. M.S.
36 KBDA-0102-36119.00
48 KBDA-0102-48155.30
12"
24
36
48
KBDA-0508-1245.20
KBDA-0508-2483.00
KBDA-0508-36119.00
KBDA-0508-48155.30
33
Fax: 651-345-3759
Up to
22ga.
M.S.
Lgth.
www.acrotechinc.com
Desired opening equals 8X the material thickness if Mild Steel.
Stainless Steel requires 10X the material thickness for die opening.
Recommended for air bending, NOT coining.
acroform inserts
Acroform™ Inserts: It’s as simple & economical as it sounds!
The Acroform™ insert is made of a specially formulated urethane and is designed to fit standard female press brake dies. This
composition does not compress, but flows to form the shape of the male punch, literally wrapping the material around the
punch, providing a scratch-free, accurate bend.
Acroform™
Normal Applications
figure: A
figure: B
For long dies or
severe applications
Just simply slip “Acroform” into an existing female die (Fig. A). Acroform™ sizes correspond to the nominal steel die opening – 1" Acroform™
fits 1" wide standard die. Use approximately 2" longer Acroform™ length than length of bend. If long bends are being made, simply butt
Acroform™ ends together (Acroform™ is available in up to 4' lengths) using two-faced tape in the female die to prevent Acroform from
separating at the joints (Fig. B). Press or die misalignment is not a problem as it is with hard steel dies.
Remember no-marks on stainless, aluminum, vinyl coated stock and pre-painted stock. Cracking is reduced and in many cases eliminated when
forming difficult materials.
It’s the fastest way to short flange bending. For Example try forming these flanges in steel dies:
• 5/16" Leg, 90° Flange, 16 ga. M.S. 1" wide “V” die
• 1/8" Leg, 90° Flange, 24 ga. M.S. 1" wide “V” die
• 1/16" Leg, 90° Flange, .001" Brass, 1" wide “V” die
• 5/8" Leg, 90° Flange, 10 ga. M.S. 1" wide “V” die
NOTE: No female die change was necessary for any of the above forming examples. However, bends of this type may cut and otherwise reduce
the life of the Acroform™ pad.
For maximum life of Acroform™, use the least penetration that will produce the desired bend and generally do not penetrate to a depth of more
than 30% of the Acroform™ height.
*Clean Acroform™ to avoid abrasion.
NOTE: Bends will generally have little or no springback and you may find that standard over-bend punches can be replaced with accurate male
punches.
The maximum thickness capacity of your female die remains approximately the same when using Acroform™, except that you can now also
form thinner materials without changing the female die to a smaller size.
For guidance of the tonnage required with 1" Acroform™ and a 90° bend in M.S.:
20 ga. – 4 tons/ft. approximate • 16 ga. – 6 tons/ft. approximate • 14 ga. – 9 tons/ft. approximate • 11 ga. – 20 tons/ft. approximate
Special NOTE: 2" Acroform™ forms all 90° and 30° bends normally requiring smaller die openings. For short flanges and smaller press brakes,
particularly in gauge stock, 1" is adequate. Because applications of Acroform™ vary, it is not possible for us to predict precise results covering all
cases.
Acroform™ Advantages:
34
Economical
No Marking
Uses Existing Female Dies
Fitted in Seconds
Accurate Forming
No Matted Dies Required
Removed in seconds
Sharper Bends
Eliminates Wear
Forms Many bends
Reduced Springback
Worn Out Dies become Precision Dies
acroform inserts
Acroform™ Inserts
800-345-0583
For a quick and effective way to avoid die marks on stainless steel, prepainted material, etc. simply position these 1" or 2" inserts in corresponding
90°bottom dies! The K•Prene® insert will conform to a variety of punch tips.
In addition to eliminating the secondary procedure expense of removing die
marks, your die will now act like a universal bottom die.
The forming of expanded metal or mesh is simplified, as cracking is reduced
and often eliminated.
www.acrotechinc.com
This product is stocked in K•950A. It is available in softer grades.
Dimension
Length
1" Insert
1/2" H
1" H
Price
12"
24
36
48
KAF-161000-12$13.00
KAF-161000-2425.95
KAF-161000-36 38.85
KAF-161000-4851.85
12
24
36
48
KAF-162000-1229.00
KAF-162000-2458.00
KAF-162000-3687.00
KAF-162000-48115.80
*Double-faced Clamping Tape 1" x 36 yards
Fax: 651-345-3759
2" Insert
Part No.
KPT-13614.00/roll
Double-faced Clamping Tape
This double-faced tape securely holds Acroform™ and Acro-Hyde™ in place. It eliminates
the need for fixtures, clamping devices, bolts, etc.
Acro-Hyde™ for Press Brake Forming
Acro-Hyde™, a urethane film, prevents die marks on a wide range of materials including
stainless, aluminum and other polished stocks. Manufacturing costs will be reduced significantly because the film eliminates secondary polishing or having to scrap expensive blanks.
Simply cut Acro-Hyde™ to length, lay it on top of the bottom die and secure one side with
*Double-faced Clamping Tape.
Description
.015 x 2" wide x 100 ft.
.015 x 4" wide x 100 ft.
.015 x 6" wide x 100 ft.
.030 x 6" wide x 100 ft.
.015 x 12" wide x 100 ft.
.030 x 12" wide x 100 ft.
.015 x 18” wide x 100 ft.
.030 x 18” wide x 100 ft.
.015 x 36" wide x 20 ft. (min.)
.030 x 36" wide x 20 ft. (min.)
Call for volume discounts
Part No.
Price
ACH-02015$45.00
ACH-0401586.62
ACH-06015129.69
ACH-06030209.00
ACH-12015265.00
ACH-12030418.00
ACH-18015285.00
ACH-18030438.00
ACH-360157.81/ft.
ACH-3603014.50/ft.
General Properties:
Specifications
Values
Durometer:
D224085A
Specific Gravity: D7921.20
Tensile Properties:D638
Modulus at100% strain
800 psi
Modulus at300% strain
1800 psi
Modulus at break
7000 psi
Modulus of elasticity
up to 10% strain
30 psi
Elongation at break
400
Set at break
30
Tear Properties:
Die C
D624
425
35
punch strippers
SurStrip™ Punch Strippers
Stocked in K-950A. Other durometers are available.
To order, indicate the part number, durometer, and
quantity desired.
Standard Sizes– Strippers with I.D. of 3/16",
1/4" and 5/16" have 1/16" dia. air holes. All others
have 1/8" air holes.
I.D.
O.D.
Lgth.
Part No.
Price
3/16"11/16" 1-1/4" KSS-316114$3.40
1-1/2
KSS-3161123.65
1/43/4 1-1/4KSS-0141143.40
1-1/2
KSS-0141123.65
1-3/4
KSS-0141344.00
5/1613/16 1-1/4 KSS-5161143.65
1-1/2
KSS-5161124.00
1-3/4
KSS-5161344.25
2 KSS-5162004.60
3/87/8 1-1/4KSS-0381144.00
1-1/2
KSS-0381124.25
1-3/4
KSS-0381344.60
2 KSS-0382004.90
1/21
1-1/4KSS-0121144.25
1-1/2
KSS-0121124.60
1-3/4
KSS-0121344.90
2 KSS-0122005.20
2-1/4
KSS-0122145.50
1-1/41-3/4 KSS-012134A5.65
2 KSS-012200A5.95
5/8 1-1/81-1/4 KSS-0581144.25
1-1/2
KSS-0581124.60
1-3/4
KSS-0581344.90
2 KSS-0582005.20
3/4 1-1/21-3/4 KSS-0341345.80
2 KSS-0342006.45
2-1/4
KSS-0342147.00
2-1/2
KSS-0342127.65
2-3/4
KSS-0342348.20
7/8 1-3/41-3/4 KSS-0781346.75
2 KSS-0782007.35
2-1/4
KSS-0782147.90
2-1/2
KSS-0782128.55
2-3/4
KSS-0782349.15
12 1-3/4
KSS-1001347.35
2 KSS-1002007.90
2-1/4
KSS-1002148.55
2-1/2
KSS-1002129.15
2-3/4
KSS-1002349.80
1-1/42-1/2 2
KSS-11420012.20
2-1/4
KSS-11421413.40
2-1/2
KSS-11421214.60
2-3/4
KSS-11423415.80
3 KSS-11430017.00
1-1/22-3/4 2
KSS-11220014.60
2-1/4
KSS-11221415.80
2-1/2
KSS-11221217.00
2-3/4
KSS-11223418.30
3 KSS-11230019.50
23 2-1/4
KSS-200214A21.00
3-1/42-1/4 KSS-20021421.60
34 2-1/4
KSS-300214A22.05
4-1/22-1/4 KSS-30021427.50
36
Longer Tool Life: These strippers generate high holding pressure
and strip the blank cleanly from the punch, resulting in an optimum
working condition for the punch and longer effective work life.
Very high load-bearing capacities.
Safer than steel springs, since they do not fragmentize.
Easy To Use: Simply push stripper onto punch shank (I.D. is slightly
undersized to grip punch). First stroke of press forces punch tip
through stripper bottom.
Ideal for punching odd shaped holes.
I.D.
Length
Air
Hole
1/4"
6.3mm
O.D.
Di-Acro 902 Series Strippers
Designed for direct use in Di-Acro Hand Turret Punches, as well
as the VT-19P, VT-19S, and VT-19 NC equipped with 903 style
Turrets. See following page for strippers that fit round and
shaped punches.
Di-Acro 906 Series Strippers
The 906 Series Strippers are manufactured specifically for the
VT-19P, VT-19S, and VT-19 NC and the VT-36 NC equipped
with the 906 style Turrets.
Station I.D.
Part No.
Price
B
3/8" 906-1508001 $11.30
B
3/4 906-1508002 11.80
C
3/8 906-1508003 16.20
C
3/4 906-1508004 16.20
C
1 906-1508005 13.20
D 1-3/8 906-1508006 13.20
E-F 2-1/4 906-1508007 23.65
6
ked 90
All Stoc rometer
Du
are 90A
Station Punch Size
A
A
A
B
B
Drill No’s. 1 to 66
1/32" thru 3/8"
25/64" thru 3/4"
49/64" thru 1"
1-1/32" thru 1-5/8" Part No.
Price
902-1508001
902-1508001
902-1508002
902-1508003
902-1508004
$11.30
11.30
11.80
16.20
16.20
Station Punch Size
A
A
B
C
C
1/8" thru 1/4"
9/32" thru 1/2"
17/32" thru 3/4"
25/32" thru 1"
1-1/16" and 1-1/8" Part No.
Price
902-1508005
902-1508006
902-1508007
902-1508008
902-1508008
$13.20
13.20
18.70
18.70
18.70
Part No.
Price
902 Series Ovals
Price
1/32" x1/16" thru 5/16" 902-1508005 $13.20
1/32" x 3/8" thru 1/2" 902-1508006
13.20
1/16" x 1/8" thru 5/16" 902-1508005
13.20
1/16" x 3/8" thru 1/2" 902-1508006
13.20
3/32" x 1/8" thru 5/16" 902-1508005
13.20
3/32" x 3/8" thru 1/2" 902-1508006
13.20
1/8" x 3/16" thru 5/16" 902-1508005
13.20
1/8" x 3/8" thru 5/8"
902-1508006
13.20
1/8" x 3/4" thru 1"
902-1508007
18.70
1/8" x 1-1/2"
902-1508008
18.70
5/32" x 3/16" thru 5/16"902-1508005 13.20
5/32" x 3/8" thru 5/8" 902-1508006
13.20
5/32" x 3/4" or 7/8"
902-1508007
18.70
5/32" x 1"
902-1508008
18.70
3/16" x 1/4" or 5/16" 902-1508005
13.20
3/16" x 3/8" thru 5/8" 902-1508006
13.20
3/16" x 3/4" or 7/8"
902-1508007
18.70
3/16" x 1"
902-1508008
18.70
7/32" x 1/4"
902-1508005
13.20
7/32" x 5/16" thru 5/8" 902-1508006
13.20
7/32" x 3/4" or 7/8"
902-1508007
18.70
7/32" x 1"
902-1508008
18.70
1/4" x 5/16" thru 5/8" 902-1508006
13.20
1/4" x 3/4" or 7/8"
902-1508007
18.70
1/4" x 1" or 1-1/2"
902-1508008
18.70
9/32" x 5/16" thru 5/8" 902-1508006
13.20
9/32" x 3/4" or 7/8"
902-1508007
18.70
9/32" x 1"
902-1508008
18.70
5/16" x 3/8" thru 5/8" 902-1508006
13.20
5/16" x 3/4" or 7/8"
902-1508007
18.70
5/16" x 1"
902-1508008
18.70
11/32" x 3/8" thru 5/8" 902-1508006
13.20
11/32" x 3/4" or 7/8" 902-1508007
18.70
11/32" x 1"
902-1508008
18.70
3/8" x 7/16" thru 5/8" 902-1508006
13.20
3/8" x 3/4" or 7/8"
902-1508007
18.70
3/8" x 1" or 1-1/2"
902-1508008
18.70
13/32" x 7/16" thru 5/8" 902-150800613.20
13/32" x 3/4" or 7/8" 902-1508007
18.70
13/32" x 1"
902-1508008
18.70
7/16" x 1/2" or 9/16" 902-1508006
13.20
7/16" x 5/8" or 3/4"
902-1508007
18.70
7/16" x 7/8" or 1"
902-1508008
18.70
15/32” x 1/2”
902-150800613.20
15/32" x 9/16" thru 3/4"902-1508007 18.70
15/32" x 7/8" or 1"
902-1508008
18.70
1/2" x 9/16" thru 3/4" 902-1508007
18.70
1/2" x 7/8" or 1"
902-1508008
18.70
5/8" x 1"
902-1508008
18.70
3/4" x 1"
902-1508008
18.70
7/8" x 1"
902-1508008
18.70
Station Punch Size
A
A
A
A
A
A
A
A
B
C
A
A
B
A
A
B
A
A
B
A
A
B
C
A
A
B
A
A
B
A
B
A
B
C
A
B
A
B
A
B
A
B
C
B
C
B
C
B
C
C
1/32" x1/16" thru 3/8" 902-1508005
1/32" x 7/16" or 1/2" 902-1508006
1/16" x 1/8" thru 3/8" 902-1508005
1/16" x 7/16" or 1/2" 902-1508006
3/32" x 3/16" thru 3/8" 902-1508005
3/32" x 7/16" or 1/2" 902-1508006
1/8" x 3/16" thru 3/8" 902-1508005
1/8" x 7/16" thru 3/4" 902-1508006
1/8" x 7/8" or 1"
902-1508007
1/8" x 1-1/2"
902-1508008
5/32" x 1/4" thru 7/16" 902-1508005
5/32" x 7/16" thru 3/4" 902-1508006
5/32" x 7/8" or 1"
902-1508007
3/16" x 1/4" thru 3/8" 902-1508005
3/16" x 7/16" thru 3/4" 902-1508006
3/16" x 7/8" or 1"
902-1508007
7/32" x 5/16" or 3/8" 902-1508005
7/32" x 7/16" thru 3/4" 902-1508006
7/32" x 7/8" or 1"
902-1508007
1/4" x 5/16" or 3/8"
902-1508005
1/4" x 7/16" thru 3/4" 902-1508006
1/4" x 7/8" or 1"
902-1508007
1/4" x 1-1/2"
902-1508008
9/32" x 5/16" or 3/8" 902-1508005
9/32" x 7/16" thru 3/4" 902-1508006
9/32" x 7/8" or 1"
902-1508007
5/16" x 3/8"
902-1508005
5/16" x 7/16" thru 3/4" 902-1508006
5/16" x 7/8" or 1"
902-1508007
11/32" x 7/16" thru 3/4"902-1508006
11/32" x 7/8" or 1"
902-1508007
3/8" x 7/16" thru 3/4" 902-1508006
3/8" x 7/8" or 1"
902-1508007
3/8" x 1-1/2"
902-1508008
13/32" x 1/2" thru 3/4" 902-1508006
13/32" x 7/8" or 1"
902-1508007
7/16" x 1/2" thru 3/4" 902-1508006
7/16" x 7/8" or 1"
902-1508007
15/32" x 9/16" thru 3/4"902-1508006
15/32" x 7/8" or 1"
902-1508007
1/2" x 9/16" thru 3/4" 902-1508006
1/2" x 7/8" or 1"
902-1508007
1/2" x 1-1/2"
902-1508008
5/8" x 1"
902-1508007
5/8" x 1-1/2"
902-1508008
3/4" x 1"
902-1508007
3/4" x 1-1/2"
902-1508008
7/8" x 1"
902-1508007
7/8" x 1-1/2"
902-1508008
1" x 1-1/2"
902-1508008
$13.20
13.20
13.20
13.20
13.20
13.20
13.20
13.20
18.70
18.70
13.20
13.20
18.70
13.20
13.20
18.70
13.20
13.20
18.70
13.20
13.20
18.70
18.70
13.20
13.20
18.70
13.20
13.20
18.70
13.20
18.70
13.20
18.70
18.70
13.20
18.70
13.20
18.70
13.20
18.70
13.20
18.70
18.70
18.70
18.70
18.70
18.70
18.70
18.70
18.70
37
Fax: 651-345-3759
A
A
A
A
A
A
A
A
B
C
A
A
B
B
A
A
B
B
A
A
B
B
A
B
C
A
B
B
A
B
B
A
B
B
A
B
B
A
B
B
A
B
B
A
B
B
B
B
B
B
B
Part No.
Station Punch Size
www.acrotechinc.com
902 Series Rectangulars
902 Series Squares
800-345-0583
902 Series Rounds
strippers
2
ked 90
All Stoc rometer
Du
are 90A
strippers
Strippers - Wiedeman
For Wiedeman W–20, W–30, W45, & Centrum Models
112 Style Tooling
Station
B
C
D
D
D
E
E
F
F
F
G
G
K
K
Shape Face Dia. I.D.
O.D.
Lgth.
Part No. Price
Std.
1-5/32" 31/32" 2"
1-27/32"500-1453 $8.30
Std.
1-23/32 1-15/322-1/2 2-1/16 500-1455 9.35
Std.
2-7/32 1-31/323
1-1/2 500-1456 9.35
1" sq.* 2-7/32
1-31/32 3
1-1/2
500-1520 11.05
Rect.**2-7/32 1-31/323
1-1/2 500-1511 10.50
Std. 2-29/323-3/32 4-9/321-1/2 500-145711.55
Rect.**2-29/32 3-3/32 4-9/32 1-1/2 500-1459 13.25
Std. 3-11/163-3/32 4-9/321-1/2 500-146211.55
2" sq.* 3-11/16 3-3/32 4-9/32 1-1/2
500-1467 13.25
Rect.**3-11/16 3-3/32 4-9/32 1-1/2 500-1526 13.25
Std.
4-3/16 3-15/32 4-25/321-1/2
500-1463 12.90
Rect.** 4-3/16 3-15/32 4-25/321-1/2
500-1527 14.10
Std.*1" & 2" Squares Only.
Rect.**
** 1/2" & Narrower Rectangles Only.
O.D.
I.D.
114 Style Tooling
Station
B
C
D
D
D
E
E
F
F
F
G
G
G
H
H
J
J
K
K
O.A.L.
Shape Face Dia. I.D.
O.D.
Lgth.
Std.
1-1/8" 1-1/16" 1-31/32" 2.362"
Std.
1-23/32 1-3/4 2-1/2 2-5/16
Std.
2-7/32 1-31/32 3
2-3/32
1" sq.* 2-7/32
1-31/32 3
2-3/32
Rect.** 2-7/32 1-31/32 3
2-3/32
Std.
2-29/32 2-31/32 4
2-3/32
Rect.** 2-29/32 2-31/32 4
2-3/32
Std.
3-9/32 2-31/32 4
2-3/32
2" sq.* 3-9/32
2-31/32 4
2-3/32
Rect.** 3-9/32 2-31/32 4
2-3/32
Std.
3-25/32 4-11/32 5-5/32 2-3/32
2" sq.* 3-25/32 4-11/32 5-5/32 2-3/32
Rect.** 3-25/32 4-11/32 5-5/32 2-3/32
Std.
4-17/16 4-11/32 5-5/32 2-3/32
Rect.** 4-17/16 4-11/32 5-5/32 2-3/32
Std.
5-11/32 4-23/32 5-13/162-3/32
Rect.** 5-11/32 4-23/32 5-13/162-3/32
Std.
6-5/8 5-23/32 6-5/8 2-3/32
Rect.** 6-5/8 5-23/32 6-5/8 2-3/32
Part No. Price
500-1342$9.40
500-1344 11.55
500-1351 11.55
500-1379 13.25
500-1421 13.25
500-1354 12.90
500-1448 14.10
500-1355 12.90
500-1531 14.35
500-1530 14.35
500-1359 17.40
500-1426 18.50
500-1528 18.50
500-1360 17.40
500-1452 18.50
500-1375 22.35
500-1431 24.25
500-1534 26.50
500-1535 29.25
Urethane Parts for Piranha Ironworkers
Piranha
Part No.
Acrotech Part No.
Durometer
/Color
Price
PUNCH ASSEMBLY : STRIPPER BLOCK
0330403 PIR-P35/P50
90A-Blue$11.95
0340403PIR-P70/P90
90A-Blue24.95
SHEAR HOLDDOWN ASSEMBLY : SHEAR URETHANE
0330207 500-5470
95A-Black53.50
0340207 500-9975
95A-Black72.95
0350207 501-0087
95A-Black62.50
0376227 501-0089
95A-Black58.95
SHEAR HOLDDOWN ASSEMBLY : ANGLE URETHANE
03302081500-7043
95A-Black 33.85
0340208 500-9974
95A-Black42.75
0350208 501-0090
95A-Black35.10
0376228 501-0091
95A-Black33.85
SHEAR HOLDDOWN ASSEMBLY : ROUND BAR URETHANE
0330209 501-0092
95A-Black14.10
0340209 501-0093
95A-Black15.15
38
Face Dia.
custom products
800-345-0583
Tool Holsters
Designed to reduce costly repairs and down time of expensive
pneumatic tools used in fast paced assembly lines. Stocked in
K•Prene™ K-900A which is hard and slick, insuring easy-in and
easy-out, yet will flex upon contact. Mounting holes at top and
bottom mean secure and easy installation.
Contact our factory for additional sizes or styles.
Part No.
Taper ID Cup Length Overall Length Price
500-0221 4" to 1-1/2"
500-9201 Straight ID 2"
500-9201
7"
5-3/4"
Slick Strip™ Tape
8-1/2"
6-1/4"
www.acrotechinc.com
500-0221
$37.80
$37.80
(10Mil.)
UHMW Polyethylene
Withstands temperatures up tp 150° F.
4 mil. backing
Part No.
Width
Length
Price
SST-1001
SST-1015
SST-1002
SST-1003
SST-1004
SST-1006
SST-1022
1"
1-1/2
2
3
4
6
22
36 yards
36 yards
36 yards
36 yards
36 yards
36 yards
10' min.
$46.20
60.90
74.55
106.05
138.60
208.95
9.45/ft
K-20 Adhesive
Especially formulated to withstand continuous flexing. Exhibits great
strength when used to bond K•Prene® to K•Prene®, metal, or plastic.
Two-part kit composed of equal containers of resin and hardener.
• 45 minute pot life • 12 hour cure time • 2-3 day full cure
Applications:
Applying K-Prene
To
For applying urethane - to - urethane OR urethane - to - steel.
K-20 has high tensile strength, yet remains flexible to withstand
continuous shock of press strokes.
Composed of a two-part A and B kit. 1+ year shelf life.
Wear PadsUrethane Die Pads
Description
Part No.
Clamping Pads
Steel Clamping Plates
Stripping Pads
Steel Stipper Plates
Pressure Pads
Steel Pressure Plates
1/2 Pint Kit (2 – 1/4 Pint Cans)
1 Pint Kit (2 – 1/2 Pint Cans)
2 Pint Kit (2 – 1 Pint Cans)
KPA-202$22.00
KPA-20340.90
KPA-20478.45
Embossing pads
Steel Sub-Plates
Wiping Blocks
Steel Holders
Fixture Blocks
Steel Sub-Plates
Price
39
Fax: 651-345-3759
When applied to metal surfaces, this pressure sensitive tape will reduce
friction and protect finished stock (wood, metal, etc.) from scratches
and dents. To apply, cut to length with scissors, remove adhesive
protector and apply to clean, dry surface. Work hardens.
performance
K•Prene® and High Performance Applications
K•Prene® has become a great option for numerous applications due to ongoing efforts to reduce
weight and increase speed and handling without sacrificing anything in the process. Its growing
use makes perfect sense once you consider its characteristics, including the ability to absorb shock,
strong, lightweight, fluid and abrasion resistance.
Spring Rubbers
Spring Rubbers
for 5"–5-1/2"
Springs
Coil Over
Spring Rubbers
for 3"–3-1/2"
Springs
Size
Size
Price
1/2"
$27.80
5/8
28.30
3/4
30.45
7/8
33.60
1
38.85
1-1/8 40.70
1-1/4 42.55
1-3/8 44.90
1-1/2 47.25
1-5/8 48.00
1-3/4 48.50
1-7/8
47.90
2
53.00
Price
.600 $19.95
.600
19.95
.600
19.95
.600
19.95
.700
21.00
.700
21.00
.700
21.00
.700
21.00
.850
22.05
.850
22.05
.850
22.05
.850
22.05
1"
22.85
1
22.85
1
22.85
1
22.85
5"–5-1/2" Springs
Pullouts are optional.......... $1.05 each
Spring
Spring
Rubber
Spring
3"–3-1/2" Springs
Durometer:
(hardness color table)
40A: Soft
60A: Hard
80A: X Hard
Use dims, between coil springs to determine part size.
Cut part and feed in between coil springs.
Approximate clearance between bottom of coil spring and top
of rubber radius is 1/4".
95A: XX Hard
Automotive and Other High Performance Applications
There are many K•Prene® applications for the automotive industry.
They weigh less than existing metal parts and have significant tensile strength.
Sway Bar (Stabilizer Bar) Bushings
Control Arm Bushings
Leaf Spring Bushings
Strut Rod Bushings
Shock Bushings
Bump Stops & Street Stops
Shock Reservoir Isolators
… or many other custom applications that your automobile,
motorcycle or snowmobile needs may require.
40
Size
wood indusrty
Urethane Drive Wheels
800-345-0583
STOCKED IN 80A DUROMETER – other durometer’s are available upon request.
DESIGNED WITH 3 OR 6 BOLT MOUNTING HOLES to fit various re-usable hubs
on woodworking Moulders, Planers and Re-Saws like:
Wadkin
Diehl
… and more
www.acrotechinc.com
SCMI
Bridgewood
Extema
Weining
Mattison
Baker
TIRES/WHEELS CAN BE USED IN OTHER APPLICATIONS to drive various other
materials beyond wood without marking or damaging.
NON-MARKING: Won’t mark pre-surfaced or pre-finished stock as does steel
or rubber wheels.
ELIMINATES SLIPPAGE: Excellent traction out performing steel wheels and
they provide feed control for higher output.
Fax: 651-345-3759
GONE ARE RAISED GRAIN PROBLEMS: The high-friction of the tire/wheel
provides more traction with less pressure, eliminating the major cause of
raised grain. This will increase the overall quality of the product
ECONOMICAL TO USE: Tires/Wheel are easy and quick to change.
When ordering, be sure to specify the durometer desired.
3 Hole Bolt Pattern
Part No.
DW3-0009
DW3-0010
DW3-0011
DW3-0012
DW3-0013
DW3-0014
DW3-0015
DW3-0016
DW3-0017
DW3-0018
DW3-0019
DW3-0020
DW3-0021
DW3-0022
DW3-0023
OD
ID
4-3/4"2"
5-1/2 2-3/16
5-1/2 2-3/8
6 2-1/4
6-5/16 2-3/4
6-5/8 2-3/4
6-5/8 2-3/4
7 2-1/4
8-3/4 4
6 2-3/4
5-1/2 3
7-5/16 2-3/4
5-1/2 3
5-1/2 2-1/4
5-1/2 2-1/4
Width
Price
2"$23.10
2 24.15
2 24.15
2 34.65
2 30.45
1 21.55
2 34.65
2 45.05
2 56.35
2 29.75
2 23.65
2 51.45
1 15.75
3/4 13.15
2
23.10
6 Hole Bolt Pattern
Part No.
OD
ID
DW6-0040
DW6-0041
DW6-0042
DW6-0043
DW6-0047
4-3/4"
5-1/2
6-5/8
4-3/4
6
3"
3
3-3/8
3
3
Width
Price
3/4"$12.30
3/4 14.20
3/4 16.70
2 21.15
3/4 15.30
Re-Covering Bonded Drive Wheels
Weinig Molders
Part No.
500-0079
500-0080
500-0081
500-1102
OD
Width
5-1/2"
5-1/2
5-1/2
4-1/2 2"
1-3/16
3/4
2
Duro
K-800A
K-800A
K-800A
K-800A
Price
$30.80
24.75
22.00
25.80
41
wood industry
Replacement Urethane Power Feed Tires
Our tires feed better and cost less than the rubber-coated hubs which are
standard on many feeders.
Replacement Tire Only: Tire fits re-usable 2 piece hub
Power Feeder Models: Fits most import and standard domestic feeders and Cantek
and Co-matic models AF38, AF48. Other models include:
Silver
Northech
Powermatic …and others
Tires are Stocked in 60A Durometer: other durometer’s are available upon request.
Durometer 70A recommended for rough stock and 60A recommended for
smooth surfaces.
Part No.
Description
OD
Width
Price
SHT-0066
Tire
120mm (4.75")
60mm (2.75")
$15.00
2.00
Width
Ø3.20
Press Fit Power Feed Tires
Fits models like: Powermatic, Maggi, Steff, Univer, Rockwell, Oliver, Forest
City… and many more. Also made to fit PFH-0070 standard hub. (fig. 1)
2 Holes at .385
Dia. on 1.84 B.C.
Tires are Stocked in 60A Durometer: other durometer’s are available upon
Ø1.38
Width
(fig. 1)
request.
Durometer: 70A recommended for rough stock and 60A recommended for
smooth surfaces.
Assembled: Tire will expand after pressing on hub. OD size listed is before
pressing on hub.
Narrow Stock: PFT-0063 is recommended for stock 1" wide or less.
Part No.
Description
PFT-0060
PFT-0061
PFT-0062
PFT-0063
PFT-0064
*PFT-0065
OD
Width
Price
Tire 3" 1"$8.35
Tire
4-3/8 1-3/415.75
Tire
4-7/8 1-3/423.10
Tire
4-3/82 18.90
Tire
4-3/8 2-1/422.05
Tire
4-3/82
24.70
(fig. 2)
* This ribbed design works best for slick surfaces. Tire OD’s increase when installed.
PFH-0070 PFT-TOOL
Hub–fits all tires except PFT-0060
Tire mounting tools (see fig 2) $8.95
18.90
Re-covering of Bonded Power Feed Wheels
Other durometers are available upon request.
Part No.
OD
SMALL Power Feeder
Commatic, Delta, Grizzley etc.
LARGE Power Feeder
Delta, Jet, Nandini, Steff, Maggi etc.
RFP-001
3-1/8"1-1/8" K-700A $18.00
RFP-002
4-5/8
42
Width
2
Duro
K-700A
Price
30.64
replacement
Re-covering of OEM Hubs and Shafts
With so much machinery imported, this service results in better performance,quicker delivery and reduced expenses!
Below are several examples of brands and models.
To order, send part/parts with information — re: the part number, durometer, and quantity desired.
800-345-0583
Some of the brands and models are listed below:
Delta, Jet, Nandini, Steff, Maggi, etc.
Makita Wood Planer-2030 & 2040
Barr Mullin Wunder Saw - Turbo
Ultimizer
Mereen-Johnson Gang Rip Saw
Gre Con Optimizer In-Feed Wheel
Weinig Molders
Mid Oregon Gang Rip Saw
www.acrotechinc.com
Hubs
Progressive Gang Rip-pressure roller
Hessman Sander
SAC - Planer Roller
Mattison Molder
Shafts
Multiscore
AEM Planer Sander
Sears Planer
Power Feeder – Sm.
Barr Mullin - Brute Pressure Roller
Williams & Hussey Molder
Commatic, Delta, Grizzley, etc.
Bridgewood Stile/Rail Trimmer
Power Feeder – Lg.
Delta Planer
Fax: 651-345-3759
OEM Replacement Parts
Acrotech has redesigned several parts in response to requests for parts that
“work better, cost less, and are more readily available!”
Let us know if you have suggestions.
Challoner Tenoner Holddown Pad
Part No.
500-2570
500-8269
Length
Width
2-11/16"
2-11/16
1"
1
Duro
K-600A
K-700A
Price
$4.00
4.00
Some of the brands and models are listed below:
Barr Mullin Wonder Saw Rollers
Sander - Holddown Rollers
Progress Tennon Machine Pads
Brute - Press Fit
Gre Con Optimizer Holddown Rollers
Shaper Feed Tires - Press Fit
Brandt Edge Bander/Arminus Profile
Jenkins Tenoner Hold Down Pad
Roller Manufacturing &
Re-covering
Manufacturing of steel shafts coated with K•Prene®, complete
with various groove types is available to satisfy many applications.
Removal of worn out or damaged coatings and re-covering with
K•Prene® is also available.
Several groove types, angles, widths and depths are available.
Smooth
Vertical
Horizontal
Herring Bone Serrate
Diamond
43
policies
Acrotech Terms, Conditions & Ordering Information
To Order
Indicate the part number (or the dimensions if there is no part
number), along with the durometer and quantities desired for
each part. Minimum orders required as noted.
Terms
Net due 30 days with approved credit, C.O.D., Visa,
MasterCard, Discover and American Express.
Availability
Products are stocked in K-400A, K-600A, K-800A,
K-900A, K-950A and K-750D, unless noted otherwise,
and often can be shipped the same day as ordered.
Prices
Subject to change without notice. Cutting charges may
be additional.
Acrotech Warranty
Return Policy
Please note, custom and non-standard
orders shipped to customer specifications
cannot be returned. A 20% re-stocking fee
will be charged when returning stocked
products.
To return defective goods for replacement or
credit, Acrotech must be notified within 30 days of
your receipt of the material. All requests for credited
returns must be confirmed with Acrotech before the
material is returned. Acrotech’s liability for returned
materials is limited to the cost of our materials.
For ordering information,visit:
www.acrotechinc.com
Defective parts of a Roll Bending Machine manufactured by ACROTECH will be replaced or repaired at no charge for twelve (12) months following delivery
to the original purchaser. Labor is included for the first 90 days. This warranty becomes void when products have not been used according to instructions
furnished by ACROTECH nor does it cover any altered parts or unauthorized repairs. We cannot be responsible for the cost of repairs made or attempted
outside of our factory. All other warranty claims are made FOB our plant, providing such item(s) is returned freight prepaid to our plant for examination.
This warranty does not apply to parts, components or systems not manufactured by ACROTECH.
These products are covered instead by the existing warranties, if any, of their manufacturers. Normal service items with a reasonable life expectancy of less
than one year are warranted only to the extent of the reasonable life under normal use and service.
Authorization must be obtained from ACROTECH before returning parts or equipment to the factory. ACROTECH will satisfy this warranty by replacing the
product or refunding the purchase price upon receipt and inspection of the product.
Standard and custom urethane products will be for a period of 60 days after shipment from defects in material only. Misuse of the urethane material voids
the warranty. Parts cannot be guaranteed to perform for specific applications without full disclosure of application prior to manufacturing by ACROTECH.
ACROTECH’s liability under this warranty shall not exceed the amount paid for the product.
THIS IS ACROTECH’S SOLE WARRANTY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, WHICH ARE HEREBY EXCLUDED, INCLUDING IN
PARTICULAR ALL WARRANTIES OF MERCHANTABILITY, FITNESS OR ANY LOSS, DAMAGE OR EXPENSES DIRECTLY OR INDIRECTLY RELATED TO THE USE
OF ITS PRODUCT OR FROM ANY OTHER CAUSE OR FOR CONSEQUENTIAL DAMAGES INCLUDING, WITHOUT LIMITATION, LOSS OF TIME AND LOSS OF
PRODUCTION.
IT IS EXPRESSLY UNDERSTOOD THAT ACROTECH IS NOT RESPONSIBLE FOR DAMAGE OR INJURY CAUSED TO OTHER PRODUCTS, MACHINERY, PROPERTY
OR PERSONS BY REASON OF THE USE OF ITS PRODUCTS.
MADE IN THE U.S.A.
980 West Lakewood Avenue P.O. Box 466
Lake City, Minnesota 55041
Toll Free: 800-345-0583 • Fax: 651-345-3759
www.acrotechinc.com / email: [email protected]
Cat. 2013-1, effective 11/1/13