How to Distinguish Between High-Speed and Low-Speed Bearings?

[LeJonathan]

Here are the differences between high-speed bearings and low-speed bearings: 1. Smoothness: From appearance, high-speed bearings have a smoother surface without the roughness or pits seen on low-speed bearings. The distance between the outer and inner rings is very small, and the bearing precision is higher. In contrast, low-speed bearings have a rougher surface and lower precision. 2. Roughness: High-speed bearings have higher precision and smaller surface roughness compared to low-speed bearings. The obvious difference is that high-speed bearings have a smoother surface, and the gap between the outer and inner rings is smaller, while low-speed bearings are the opposite. 3. Precision: Compared to low-speed bearings, high-speed bearings have higher precision in their steel balls or rollers, as well as in their raceways. High-speed bearings are of higher grade and made of better materials, such as steel with superior metallographic structure and hardness. General rolling bearings are suitable for low to medium-speed rotation. If high-speed rotation is required, special requirements must be met, and the appropriate model should be selected based on factors like load. Bearings with speeds between 5 to 60 meters per second are not considered high-speed bearings, as most standard bearings with proper lubrication can meet these needs. For applications requiring even higher speeds, such as in high-speed cutting machines or precision machining equipment, special bearings like ceramic bearings, electric bearings, or magnetic bearings may be used. In such cases, consulting with specialized manufacturers is recommended.