All Steel Bearings
Steel Balls rolling under load on marginally lubricated steel raceways cause accelerated bearing wear and decreased precision. Marginal
lubrication can be created by: frequent start-stop cycles, high loads or vibration at low speeds, lack of lubricant, low lubricant viscosity. The wear cycle is:
- With Marginal lubrication, micro-welding and subsequent micro-fracture of the steel ball and raceways surface asperities occurs.
- Metallic wear debris contaminates the lubricant and degrades the lubricant chemistry.
- Degraded lubricant with wear debris accelerates the wear process.
- Bearing precision, as measured by vibration, non-repeating run out, and work-piece quality, deteriorates rapidly.
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Hybrid Bearings
CERBEC balls rolling under load on marginally lubricated steel raceways reduce bearing wear and help maintain long term bearing precision because:
- Micro-welding and micro-fracture does not occur at the steel-silicon nitride contact points, because these contacts are structurally dissimilar materials. Therefore adhesive wear is greatly reduced.
- Lubricant contamination and degradation is greatly reduced, which extends lubricant life.
- Smoother ball and raceway surfaces are maintained resulting in lower internal friction and lower operating temperature.
- The synergy of reduced wear, lower operating temperatures, and increased lubricant life mean long term high precision and extended bearing service life for the end user.
- Less Friction and Lower Operating Temperature allow for longer life or less lubricant required. Grease can often replace oil mist systems or less grease is required depending on the bearing and operating conditions.
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