Hybrid bearings
These characteristics are extremely important for racing applications, for the following potential benefits:
- Electric insulation properties, which eliminate the risk of damages due to electric currents, even at high frequencies
- Low thermal transfer
- Weight reduction: silicon nitride density is 60% less than steel
- High-speed performance: thanks to low density (low centrifugal forces) and low friction (low temperatures)
- Low wear rate due to high hardness
- Improved grease life and resistance to seizure, due to lower running temperature thanks to lower internal friction than all-steel bearings
- Higher stiffness: silicon nitride has a 50% higher elastic modulus (Young's modulus) than steel
- Resist vibrations: silicon nitride balls on steel have much higher resistance against wear caused by small vibrations of the bearings, particularly at stand still
- Longer life in corrosive environment. Silicon nitride is non-corrosive and chemically inert
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