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Rulon Bearings

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TriStar CJ Composite Bearing
Categories: Polymer; Thermoset; Epoxy

Material Notes: This family of materials offers the combination of high compressive strength, low coefficient of friction, and excellent abrasion and corrosion resistance while running without lubrication. They are used in bearing and seal applications from temperature extremes of -320°F to 350°F with and without additional lubricants.

TriStar CJ Composite Bearing: Multi-layer lightweight construction provides dry lubrication with high reliability. The innermost layer features a braided synthetic fiber/PTFE tubular liner saturated with epoxy resin. A low helix angle layer of epoxy-coated glass filaments follows for axial strength. Multiple high helix angle layers comprise the outer structure and provide compressive strength. Ideally suited for non-lubricated high-load/low-speed shock load applications. Operates well in demanding and destructive environments. Rc 50 and higher steel mating surface. Material has thermal and electrical insulating properties. Suitable for use in steam, wet, dry, or vacuum environments. Markets for CJ Composite Bearings include Agricultural, Appliances, Automotive, Construction, Industrial, and Transportation.

Vendors: TriStar Plastics Corp. provides engineering, custom fabrication and manufacturing of high-performance plastics and self-lubricating bearing materials, such as Rulon, PEEK, Torlon, CJ Composites and Ultracomp. Capabilities include component design, material selection, prototype and production, manufacturing and surface modification. Call (800) TRI-STAR (800) 874-7827 or visit or www.TStar.com

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Physical PropertiesOriginal ValueComments
Density 1.90 g/cc
Water Absorption <= 0.50 %
@Time 86400 sec
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell R 103
Compressive Strength 50000 psi
Shear Strength 5.00 ksi
Izod Impact, Notched 14.0 ft-lb/in
Coefficient of Friction, Dynamic 0.080Dry vs. Steel
Coefficient of Friction, Static 0.50Dry vs. Steel
Limiting Pressure Velocity 25000 psi-ft/minUnlubricated
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 2.41e+18 ohm-cm
Surface Resistance 3.93e+15 ohm
Dielectric Constant 4.15
@Frequency 1e+6 Hz
Dielectric Strength 200 kV/in
Dissipation Factor 0.0094
@Frequency 1e+6 Hz
 
Thermal PropertiesOriginal ValueComments
CTE, linear 70.0 µin/in-°F
Thermal Conductivity 1.40 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 300 °FContinuous
 335 °FShort Term
Deflection Temperature at 1.8 MPa (264 psi) 350 °F
Minimum Service Temperature, Air -320 °F

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PTRIST980 / 99331

Rulon Bearings

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