What should be paid attention to when installing the paired angular contact ball bearing? Sanli summarized the following steps for you:
Step 1: ensure the natural environment of installation, and clean the shaft, bearing seat and other components;
Step 2: accurately measure the specifications, concentricity and vertical angle of the shaft and bearing seat;
Step 3: open the outer packaging of the bearing, wipe off the rust prevention oil on the inner and outer rings, and carry out the appearance inspection of the bearing;
Step 4: specify the bearing installation position, and the standard step must be back-to-back installation;
Step 5: apply electric heater to heat the bearing, ensure that the temperature probe is on the inner ring, and the matching single row angular contact ball bearing should be heated together; Generally, the bearing temperature can be 70 ° C higher than the shaft, and the maximum bearing temperature can not exceed 120 ° C. (Bearing must be demagnetized)
Step 6: install the angular contact ball bearing, and the matching single row of angular contact should be installed together;
Step 7: Use the wrench and lock nut to manually lock the bearing to the appropriate position, ensure that the inner hole is tightened on the shoulder of the shaft, and the matching two angular contact ball bearing inner holes are close to each other; (No lock washer is added at this time)
Step 8: Wait for the bearing to cool to the indoor temperature;
Step 9: Remove the lock nut, install the lock washer, and then install the nut. If conditions permit, apply a layer of floating oil on the fillet of the lock nut;
Step 10: Use a wrench to install the lock nut to a suitable position. On the premise that it can not be screwed manually, use a hammer to lock it for another 1/8 - 1/4 turn to remove the gap in the whole process of refrigeration;
Step 11: Find the lock washer foot that is close to the lock nut groove. If the two ends are not aligned, it is not necessary to loosen the lock nut to align the two ends of the lock groove. Lock the lock nut again, align the two ends of the recent seal ring foot, and then bend the seal ring foot to the groove body;
Step 12: After installation, turn the bearing manually to check whether it is running smoothly, the torque is too large, and the torque is unstable.
Step 13: If the next step is not carried out immediately, the parts need to be covered for maintenance to avoid the entry of slag.
Step 14: For the bearings placed back to back, the outer fixed parts can be relatively loose fixed in the bearing seat, preferably with a radial side clearance of 0.00~0.05mm.
Only when the torque is accurate, can it rotate stably!