Washer Construction
The thrust washer is constructed by bonding woven Teflon® fiber fabric liner to one or both faces of a washer substrate. The substrate may be metallic, such as low carbon steel, stainless steel or aluminum. It may also be a non-metallic substrate such as NEMA grade G-10 or NEMA grade C. Standard washers are made with G-10 substrate.
Size range
Standard and special inch and metric sizes are available from 3/8” to 18” outer diameter.
Load Capacity
Typical dynamic loads: 4,000 to 20,000 psi Ultimate strength: 60,000 psi for G-10 washer substrate.
Motion
The thrust washer works well in oscillatory and slow speed full rotation. Alternate configurations work well in linear sliding applications.
Friction
Duralon® bearings offer low-friction operation. Friction decreases with increasing load. Friction coefficients vary from .16 @500 psi to .07 @ 20,000 psi.
Self-lubricated
The bearing is constructed with woven Teflon® fiber. Teflon® is deposited on the mating surface during the start up phase and provides lubrication. Lubrication can be added if desired. Consult a Duralon® engineer for approved lubricants.
Electrical Properties
The Duralon® G-10 substrate material is an electrical insulator. Its dielectric strength is about 550 volts per mil. Since the back-up material is electrically non-conducting, electrolytic or galvanic action will not take place between it and the housing or the shaft.
Chemical Properties
Duralon® bearings are typically resistant to most chemicals. Due to the wide range of exposures, specific conditions must be checked. Consult a Rexnord engineer for specific chemicals.
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