Composite Bearings Are Better
Filled Thermoplastic Bearings
Filled engineering grade thermoplastics have much lower mechanical properties. They also are subject to cold flow, an inherent problem when using any engineered thermoplastic today.
Additional Performance Differences:
- Dynamic and Static Loading Capacities. Engineered thermo-plastic bearing materials exhibit very poor loading capacities.
PolyLube™ improves this by use of continuous filament reinforcement and a thermoset resin matrix. Thermoplastics are prone to creep under prolonged loading. - Sizing predictability. Injection molding is prone to variation.
- Impact Fatigue. Even glass filled thermoplastic resins have limits to repeated impact resistance.
- Limited Self-Lubrication Capabilities. Filled thermoplastics have a low lubrication percentage, and PolyLube's PTFE coatings are superior. In-use coefficient of friction and break-in characteristics of each bearing material is different.
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