In order to maintain the normal use of the main shaft and the main shaft bearing, in addition to the performance of the main shaft and the bearing itself, a point that is often overlooked by the public is to choose the appropriate special bearing lubricating oil for the main shaft. The special bearing lubricating oil for the main shaft is also called bearing oil. Appropriate bearing lubricating oil for main shaft plays a very important role in maintaining the precision, life and other aspects of the main shaft. The key factors that affect the selection of lubricating oil for machine tool spindles are the structure of the spindle bearing, the speed and the clearance of the spindle bearing. The suitable temperature and viscosity of the special spindle bearing lubricating oil will make the spindle work at high speed and high temperature. Very good lubricity. The selection of the special bearing oil for the spindle should consider the following points: 1. The viscosity of the oil should be good, and the temperature should be matched with that of the spindle; during the high-speed operation of the spindle, the temperature of the spindle will increase, or the ambient temperature in the workshop will change greatly. This requires that the special lubricating oil for the spindle needs to have good viscosity and viscosity-temperature, and will not affect the degree of lubrication with the increase of the spindle temperature or the change of the surrounding temperature, otherwise the temperature of the machine tool spindle bearing will increase. As a result, the machine tool will be damaged, which will affect the machining accuracy of the machine tool. 2. It must have good oxidation resistance; the special bearing lubricating oil for the main shaft has a long service life, and it is necessary to ensure that it will not deteriorate due to contact with oxygen during long-term use, which requires the lubricating oil to have good oxidation resistance. . 3. Good lubricity; during the high-speed operation of the machine tool spindle and bearing, the impact will cause damage to the oil film on the contact surface, so the special bearing for the spindle is required to have good lubricity, which can maintain the friction between the spindle and the bearing. The force is reduced and the temperature generated by the friction is reduced. 4. Have good anti-rust ability; when the spindle is in the long-term operation process, it will be mixed with moisture in the air and machine tool coolant. These moisture and coolant will cause the spindle or the bearing to rust, so the special bearing lubricating oil for the spindle It needs to have a certain anti-rust ability. For 37 years, we have been focusing on the research and development and production of special bearings for spindles and angular contact bearings. We have kept improving in bearing production and maintenance, never forgetting our original intention, and have been sticking to the goal of building an excellent domestic bearing brand!