What should be paid attention to after the installation of angular contact ball bearing

Power shall be cut off immediately after no-load startup, and large machinery cannot be rotated manually. When the machine is idling, check whether there is vibration, noise, contact of rotating parts, etc., and enter into power operation after confirming that there is no abnormality.

Starting from no-load low speed, power operation. Slowly increase to the rated operation under the specified conditions. During test run, check whether there is abnormal sound, change of bearing temperature, leakage or discoloration of lubricant, etc. If any abnormality is found, the operation shall be stopped immediately, the machinery shall be inspected, and the bearing shall be removed for inspection if necessary.

The temperature of angular contact ball bearing rises gradually from the beginning of operation, and it is usually stable after 1-2 hours. If the bearing device is not good, the temperature will rise sharply and abnormal high temperature will occur. The reasons include too much lubricant, too small bearing clearance, bad device and too much friction of sealing device. In the place of high-speed rotation, the wrong choice of bearing structure and lubrication mode is also the reason.