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Turcite

TurciteAeroLite 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
  • 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

 

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