GENERAL PROPERTIES
Turcite ® is a self-lubricating thermoplastic bearing material manufactured by American Variseal Bearings (formerly Shamban Polymer Technologies) Group. These materials are cost effective, chemically resistant, wear resistant, and are well suited to a wide range of temperatures. Turcite ® A and Turcite ® X are acetal-based materials and their properties and applications can be compared to those of more well-known Delrin AF ®. Turcite ® materials are available in rod form only.
( see also HiMod Grade Specifications )
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
TURCITE ® GRADES Turcite ® A ( also known as Turcite ® TA )
Turcite ® A is suitable for moderate to heavy loads at moderate speeds. It performs well under vibratory and dynamic loading and is readily machinable. It is recommended for a maximum continuous service temperature of 180°F (80°C). Turcite ® A has higher wear resistance than Turcite ® X. It is BLUE in color.
Turcite ® TX ( also known as Turcite ® X )
Turcite ® X excels in low load and high speed applications, and can be easily machined. It has minimal hygroscopic characteristics and possesses low thermal expansion properties, resulting in a structurally stable material. Its maximum continuous service temperature is also 180°F (80°C). Turcite ® X has lower friction than Turcite ® A. It is RED in color.
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TYPICAL PROPERTIES of TURCITE ® A and X | |||
| ASTM or UL test | Property | Turcite ® A | Turcite ® X |
| PHYSICAL | |||
| D792 | Density (lb/in³) (g/cm³) |
0.054 1.49 |
0.053 1.46 |
| D570 | Water Absorption, 24 hrs (%) | 0.2 | 0.2 |
| MECHANICAL | |||
| D638 | Tensile Strength @ break (psi) | 7,600 | 5,900 |
| D638 | Tensile Elongation at Break (%) | 15 | 19 |
| D790 | Flexural Strength (psi) | 11,000 | 8,000 |
| D790 | Flexural Modulus (psi) | 350,000 | 335,000 |
| D695 | Compressive Strength (psi) | 13,000 | 12,000 |
| D785 | Hardness, Rockwell | M81 | M63 |
| D256 | IZOD Impact Notched (ft-lb/in) | 0.57 | 0.54 |
| THERMAL | |||
| D696 | Coefficient of Linear Thermal Expansion (x 10-5 in./in./°F) |
5.2 | 5.2 |
| D648 | Heat Deflection Temp (°F / °C) at 264 psi |
205 / 96 |
203 / 95 |
| - | Max Operating Temp (°F / °C) | 180 / 82 | 180 / 82 |
| TRIBOLOGICAL | |||
| * | Wear Factor @ 73°F (in/psi-fpm-hr) | 43 x 10-10 | 30 x 10-10 |
| * | Coefficient of Friction, Dynamic (non-lubricated) | 0.30 | 0.22 |
| * | Limiting PV @ 100 fpm (psi-fpm) | 7,500 | 16,000 |
* = Values obtained from standard TSS Test Method (not ASTM).TURCITE is a registered trademark of Trelleborg Sealing Solutions.
NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets.
All values at 73°F (23°C) unless otherwise noted.
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Copyright Boedeker Plastics, Inc.