The difference between all ceramic bearings and hybrid ceramic bearings lies in the material combination and performance characteristics they use.
1. Material combination: All ceramic bearings are made of ceramic materials, including the inner and outer rings and rolling elements, which are made of ceramic materials such as aluminum oxide, silicon nitride, etc. Hybrid ceramic bearings combine ceramic rolling elements with metal inner and outer rings, usually made of steel.
2. Wear resistance: Ceramic materials have high hardness and wear resistance, so all ceramic bearings perform better in terms of wear resistance compared to hybrid ceramic bearings.
3. Load bearing capacity: Due to the high toughness and strength of metal materials, hybrid ceramic bearings usually have high load bearing capacity. Due to the brittleness of ceramic materials, all ceramic bearings have lower load-bearing capacity compared to hybrid ceramic bearings.
4. Temperature stability: Ceramic materials have high thermal stability and high-temperature resistance, so all ceramic bearings are more suitable for high-temperature environments than hybrid ceramic bearings.
5. Cost: Due to the high purity and difficulty in processing of materials used in all ceramic bearings, the manufacturing cost is relatively high. The manufacturing cost of hybrid ceramic bearings is relatively low.
In summary, all ceramic bearings have good wear resistance and high-temperature resistance, but their load-bearing capacity is weak and their manufacturing costs are high; Hybrid ceramic bearings perform well in terms of load bearing capacity and manufacturing cost, but their wear resistance and high temperature resistance are relatively weak. Therefore, the selection of a suitable bearing type depends on the requirements and needs of the specific application field.
