Hardness and Wear Resistance
Ceramic Bearings: The Vickers hardness can reach 1500~1800 HV, and the wear resistance is 5~8 times that of stainless steel bearings. They can still operate for a long time without lubrication.
Coated Bearings: The coating hardness is approximately 800~1000 HV, effectively protecting the base steel from corrosion and wear, but there is a risk of coating peeling off.
Load Capacity
Radial Rated Dynamic Load: For the same specifications, the dynamic load capacity of stainless steel bearings is 70%~85% of that of high-carbon chromium bearing steel; the dynamic load capacity of ceramic bearings is close to that of stainless steel bearings of the same specifications, and some models can be increased to 90% through structural optimization.
Radial Rated Static Load: Ceramic material has high compressive strength, and its static load bearing capacity is superior to that of stainless steel bearings. It is not prone to permanent deformation under short-term overload; the static load capacity of stainless steel bearings meets the needs of medium and low load equipment.
Speed Performance
Stainless Steel Bearings: The limiting speed is 80%~90% of that of carbon steel bearings of the same specifications. When equipped with nylon or stainless steel cages, the applicable speed range is 1000~15000 r/min.
Ceramic Bearings: Due to their low density and low coefficient of friction, the limiting speed can reach 1.2~1.5 times that of stainless steel bearings, suitable for high-speed corrosive conditions of 15000~40000 r/min.
Impact of Sealing Structure: Bearings with sealing rings (2RS) have a 10%~15% lower speed than open bearings, but offer stronger protection.
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