Bearing Grade Composite
Poly-Texx HPV is a self-lubricating
Bearing Grade Composite. Typical applications include sleeve
and flanged bearings for railroad safety and service vehicles.
Bushings and slide plates for the railroad, and Timber handling
industry. Also proven as knuckle and pivot bearings for mining
and off-road vehicle applications.
Its
main attribute is its ability to handle high loads under
vibration. Its ultimate compressive strength (P) is 39,000 PSI.
Poly-Texx HPV is capable of a low-load
velocity (V) of over 75 SFM. Its overall PV rating is 30,000.
The combination of excellent bearing properties,
self-lubrication and low cost makes Poly-Texx
HPV a great choice for many demanding high load and
vibration type applications.
|
|
|
Specific
Gravity,
73°F |
.053 |
Lb/in.3 |
|
Flexural
Strength,
73°F |
20,000 |
psi |
|
Shear
Strength,
73°F |
10,000 |
psi |
|
Compressive
Strength
-
Ultimate |
39,000 |
psi |
|
Tensile
Strength
(With
Grain) |
13,000 |
psi |
|
Izod
Impact
Strength
(Edgewise,
with
Grain) |
2.3 |
ft-lb./
in. |
|
Deformation
Under
Load |
0 |
% |
|
Compressive
Strength
I
to
Laminate
(Yield) |
39,000 |
psi |
|
Compressive
Strength
I
to
Laminate
(Ultimate) |
39,000 |
psi |
|
Hardness,
Rockwell
(Scale
as
noted) |
100 |
Rockwell
M |
|
Coefficient
of
Friction
(Dry
vs.
Steel)
Static |
0.14 |
|
|
Coefficient
of
Friction
(Dry
vs.
Steel)
Dynamic |
0.1 |
|
|
Maximum
Static
Bearing
Load
(P) |
37,000 |
psi |
|
Maximum
Unlubricated
No
Load
Bearing
Velocity
(V) |
75 |
ft/minute |
|
Maximum
Limiting
PV
(Unlubricated) |
30,000 |
psi
x
ft/min. |
|
Wear
Factor
"K"
x
10-8 |
3.9 |
Cubic
in.-min/ft.lbs.hr. |
|
Embrittlement
Temperature |
Cryogenic |
°F
Min. |
|
Continuous
Service
Temperature
in
Air |
257 |
°F
Max. |
|
Short
Term
Service
Temperature |
450 |
°F
Max. |
|
Tg-Glass
Transition
(Amorphous) |
N/A |
°F |
|
Melting
Point
(Crystalline
Peak) |
N/A |
°F |
|
Dielectric
Strength
Short
Term |
200 |
Volts/mil |
|
Water
Absorption,
Immersion
24
Hours |
0.5 |
% |
|
Water
Absorption,
Immersion
Saturation |
2.2 |
% |
|
Machinability
Rating |
5 |
1 =
easy,
10
=
difficult |
|
Tube
Diameter
Availability
(Off
the
Shelf) |
.125"
ID
to
60"
ID |
inches |
|
Sheet
Thickness
Availability
(Off
the
Shelf) |
6" |
inches |
|
Characteristics
/
Attributes |
Very
High
load,
Excellent
Bondability |
Self-Lubricating |
|
|
Thank you
for your
interest in our
materials. All
statements,
technical
information and
recommendations
presented are
in good faith,
based upon
tests believed
to be reliable
and practical
field
experience.
Poly-Tech is
not responsible
for its
accuracy or
completeness.
It is our
recommendation
and the
customer's
responsibility
to determine
the suitability
of any material
for any given
application. |
|
|
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