1,Bearing steel: ordinary class bearings used materials, GB basic level. The dimensional accuracy of less than ± 0.05mm, speed is less than 1000rpm, suitable for low speed, low demand environment. Such as: low-speed transmission equipment, casters, stroller, toys, cars and so on.

2, Bearing steel: Material used in motor bearings, GB P0Z2 level and above. The dimensional accuracy of less than ± 0.01mm, smooth feel, speed is less than 20000rpm, low noise, long life. For motors, toys, models, automobiles, power tools, pneumatic tools, telecommunications equipment, fitness equipment, sports equipment and so on.

3, Bearing steel: Collectibles-bearing materials, GB P6 level and above. The dimensional accuracy of less than ± 0.005mm, can replace imports, smooth feel, speed is greater than 20000rpm, low noise, long life. For high-speed motors, high-speed models, instrumentation, precision equipment, high-grade toys, and other areas have higher requirements.

4, Stainless steel bearings: two motor level and quality level, 440C stainless steel material, size, accuracy, quality level requirements of basic motor bearings and bearing steel grade, quality grade, the main difference is that a waterproof stainless steel bearings, rust, corrosion, acid and alkali, high stability, maintenance-free, long life, no rust characteristics. Widely used in food machinery, medical equipment, instrumentation, high-end products, high-end gear, fishing line wheel, high-grade toys. In addition, the material is 440C stainless steel bearings can not be judged whether there is magnetic, 440C is made of magnetic material, not rust clincher.

5,Non-magnetic 304 stainless steel bearings: non-magnetic 304 stainless steel bearings, the acid is better than 440C stainless steel. But because the material properties, hardness soft, feel and quality of its products is poor appearance, suitable only for low-speed, low-load use. It can not be used in the motor.