Turcite

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.

ASTM or UL test	Property	Turcite ® X
*PHYSICAL*
D792	Density (lb/inÂ³) (g/cmÂ³)	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./Â°F)	5.2
D648	Heat Deflection Temp (Â°F / Â°C) at 264 psi	203 / 95
–	Max Operating Temp (Â°F / Â°C)	180 / 82
*TRIBOLOGICAL*
*	Wear Factor @ 73Â°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

Features

Self-lubricating
Low Friction
Maintenance-free, long-wearing bearings
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