Hybrid Bearings Keep Away The Strays

Hybrid bearings with silicon nitride rolling elements and steel rings insulate against stray currents in large variable speed electric motors. This eliminates electric arc bearing damage. They are less dense than steel balls, reducing centrifugal force and friction for faster, cooler running and longer service and lubricant life. The bearings are harder than steel for better wear resistance against hard particles, contaminants, and vibration. Standard types include hybrid single row deep groove ball bearings with bore diameters from 5 to 110 mm; sealed and greased-for-intended life ball bearings protected by steel-reinforced synthetic rubber seals and filled with premium lubricant; and open basic design bearings available without seals. Cages are glass fiber-reinforced polyamide or pressed steel, depending on bore size.

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