Back-to-back angular contact ball bearings are generally used in areas bearing double axial forces, and in applications that require high speed ratio and precision. Angular contact ball bearing back-to-back installation steps: 1. Clean first and then assemble; paired angular contact ball bearings should be cleaned with diesel oil or gasoline before installation, and then applied after drying to ensure good lubrication. Bearings are generally lubricated with grease, or Lubricate with oil. When using grease lubrication, it is advisable to choose lubricating grease with excellent properties such as no impurities, oxidation resistance, anti-rust treatment, and extreme pressure. The filling amount of lubricating grease is 30%~60% of the capacity of the bearing and bearing box, and it should not be too much. Bearings with sealed structures and shaft-connected bearings of centrifugal water pumps have been filled with lubricating grease, which can be used directly by customers and cannot be cleaned. 2. Pressing in during installation; It is necessary to increase the equal pressure on the center of the end face of the ferrule to press the ferrule in. Do not use tools to beat the end face of the angular contact ball bearing to prevent damage to the bearing. ① The interference is relatively small Under the premise that the interference is relatively small, you can press the end face of the bearing ring with the sleeve specification at room temperature, hit the sleeve specification with a hammer, and use the sleeve specification to press the ring into it in a balanced manner. . If it is installed in large quantities, a four-column hydraulic press can be used. When pressing in, it must be ensured that the outer end face and the shoulder end face of the casing, and the end face of the inner hole and the shaft shoulder end face are clamped tightly, and there must be no gap. ② Relatively large interference When the interference is large, the angular contact ball bearing can be assembled by heating in an oil bath or by sensor heating. The temperature of the heating environment is 80°C-100°C and must not exceed 120°C. At the same time, use nuts or other appropriate methods to tighten the bearings to prevent the bearings from shrinking in width after cooling and creating a gap between the ring and the collar. 3. Adjust the clearance After installing the paired angular contact ball bearings, adjust the clearance of the bearings, and adjust the clearance according to different application conditions and fit interference dimensions. Experiments should be done to clarify if needed. Only when the torque is accurate can the rotation be stable! (http://)
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