|
AeroLite uses Turcite® for the bearing surfaces of its pedals. Turcite is used wherever a clean, maintenance-free, long-wearing bearing surface is required. It requires no lubrication and works well when wet. Turcite parts have been used in the NASA Space Shuttle, theme park rides, and ski-lift gondolas, since it has excellent cold temperature properties. AeroLite realized early on how well its properties met the requirements for a cycling pedal.
GENERAL PROPERTIES
 Turcite ® is a self-lubricating thermoplastic bearing material manufactured by American Variseal Bearings Group. These materials are cost effective, chemically resistant, wear resistant, and are well suited to a wide range of temperatures. Turcite ® X is an acetal-based material and its properties and applications can be compared to those of more well-known Delrin AF ®. Turcite ® materials are available in rod form only.
FEATURES
- Self-lubricating
- Maintenance-free, long-wearing bearings
- Low cost
- High chemical resistance
- Moisture resistant
- Always oven annealed for stress-relief
EXAMPLE APPLICATIONS
- Bearings
- Rollers
- Bushings
- Guides
- Sleeves
- Thrust washers
- Valve seats
- Gears
- Liners
- Wear surfaces
- Seals
- Insulators
- Cams
- Cam followers
TYPICAL PROPERTIES of TURCITE ® X
|
ASTM or UL test
|
Property
|
Turcite ® X
|
|
PHYSICAL
|
|
D792
|
Density (lb/in³)
(g/cm³)
|
0.053
1.46
|
|
D570
|
Water Absorption, 24 hrs (%)
|
0.2
|
|
MECHANICAL
|
|
D638
|
Tensile Strength @ break (psi)
|
5,900
|
|
D638
|
Tensile Elongation at Break (%)
|
19
|
|
D790
|
Flexural Strength (psi)
|
8,000
|
|
D790
|
Flexural Modulus (psi)
|
335,000
|
|
D695
|
Compressive Strength (psi)
|
12,000
|
|
D785
|
Hardness, Rockwell
|
M63
|
|
D256
|
IZOD Impact Notched (ft-lb/in)
|
0.54
|
|
THERMAL
|
|
D696
|
Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F)
|
5.2
|
|
D648
|
Heat Deflection Temp (°F / °C)
at 264 psi
|
203 / 95
|
|
-
|
Max Operating Temp (°F / °C)
|
180 / 82
|
|
TRIBOLOGICAL
|
|
*
|
Wear Factor @ 73°F (in/psi-fpm-hr)
|
30 x 10-10
|
|
*
|
Coefficient of Friction, Dynamic (non-lubricated)
|
0.22
|
|
*
|
Limiting PV @ 100 fpm (psi-fpm)
|
16,000
|
* = Values obtained from standard Shamban Test Method (not ASTM).
NOTE: The information contained herein are typical values intended for reference and comparison purposes only.
|
