Q: What is the acceleration level of the bearing and the corresponding speed?

A: The limit speed of the bearing is the speed limit value at which the frictional heat does not cause burns and can be continuously rotated. Therefore, the ultimate speed of the bearing depends on the structural type, size and precision of the bearing, the way of lubrication, the quality and quantity of the lubricant, the material and type of the cage, and the load conditions. The limit speed of each manufacturer's bearings is indicated on each product sample. The actual speed of use of the product should be selected according to these conditions. In general, the higher the tolerance level of the product, the higher the speed of use of the product. The indications Z1, Z2 and Z3 are not the indication of the tolerance class of the product and are the indication of the vibration performance of the product. For example, in JB/T 7047-2006 "Technical Conditions for Vibration (Acceleration) of Rolling Bearing Deep Groove Ball Bearings", the vibration acceleration level limits of deep groove ball bearings are divided into 5 groups, Z, Z1, Z2, Z3, Z4. From low to high. The better the vibration performance of the bearing, that is, the higher the level of vibration, the better the speed of the bearing in use.

In short, the speed of the bearing in actual use must be based on the various properties of the bearing and the various circumstances of the use, a reasonable choice of speed.

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