The limit speed of the special bearing for the main shaft is related to many factors such as the type, specification, load, lubrication, precision, clearance, cage and refrigeration standard of the bearing. The limit speed is based on the speed limited by the mechanical system/structural mechanics of the special bearing for the main shaft, and the maximum speed that cannot be exceeded by the specified bearing type, unless the bearing design and application can incorporate higher speed. The limit speed of the special bearing for the main shaft lies in: 1. The stability and compressive strength of the cage structure; 2. The lubrication standard of the correct guide surface of the cage; Factors that limit the rotational speed, such as the sealing material and grease of sealed bearings. If the speed conversion speed of the selected special bearing for the main shaft cannot meet the application requirements, some improvement technical countermeasures can be adopted to improve it to meet more satisfactory requirements. Such as improving the bearing tolerance level; moderately expanding the clearance; changing the material and improving the structure of the cage; changing the lubrication method, such as choosing gas, welding fume and gushing lubrication; improving refrigeration conditions, etc. Only when the torque is accurate can the rotation be stable! (http://)
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