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The bearing model is generally selected by the user’s technicians according to the service conditions and load of supporting products. The business personnel mainly know whether the actual load of the user is consistent with the selected bearing. If the INA Bearing fails to meet the use requirements, they should advise the customer to change the model as soon as possible, but there will be no problem in selecting the model unless special products.
when purchasing ina bearings, users generally only tell what model and grade, and rarely put forward requirements for bearing clearance. Business personnel must ask about the service conditions of bearings, including bearing speed, temperature and fit tolerance, which are directly related to the selection of ina bearing clearance. Generally, CM clearance is mostly used for motors with speed below 3500 rpm. For example, relatively large clearance is required for high-temperature and high-speed motors. After assembly, the clearance of INA Bearing will be reduced due to the increase of inner hole and the reduction of outer circle. The reduction of clearance = interference × 60% (unless the bearing housing is aluminum). For example, if the clearance of INA Bearing before assembly is 0.01mm and the interference during assembly is 0.01mm, the clearance of INA Bearing after assembly is 0.004mm. Theoretically, the noise and service life of INA Bearing reach the state of zero clearance, but considering the problems of temperature rise in actual operation, the clearance of INA Bearing after assembly is 0.002mm-0.004mm.
the selection of grease is generally based on the speed, temperature resistance, noise requirements and starting torque of INA Bearing. The business personnel are required to understand the performance of various grease.
bearing lubrication can be divided into oil lubrication and grease lubrication. Oil lubricated bearings are generally formal bearings, and grease lubricated bearings are generally sealed with dust covers or rubber seals. The dust cover is suitable for parts with high temperature or good service environment. The seals are divided into contact seal and non-contact seal. The contact seal has good dust-proof performance but large starting torque, and the non-contact seal has small starting torque, but the sealing performance is not as good as the contact seal. At present, ina bearings are professionally manufactured in automobile motor bearings, household appliance motor bearings, motorcycle bearings, health motor ina bearings and other industries, so that the noise and service life of ina bearings reach the state.