1. Bearing fault repair and wear parts
The shaft is rotated by the bearing support, which is the heaviest part of the load and is a component that is easy to wear.
Check failure:
▲ Check in operation; When the rolling bearing is short of oil, you will hear the sound of “bone bones” ; if you hear the sound of a discontinuous “stalk” , the bearing steel ring may be broken. When the bearing is mixed with sand and other debris or the bearing parts are slightly worn, a slight noise is generated.
▲ Check after disassembly; First check the crusher bearing rolling element, the inner and outer steel ring for damage, rust, scars, etc., then pinch the inner ring of the bearing and level the bearing, The other hand pushes the outer rigid ring. If the bearing is good, the outer steel ring should rotate smoothly. There is no vibration and obvious stuck in the rotation. After the rotation, the outer steel ring does not reverse. Otherwise, the bearing can no longer be used. The left hand is stuck in the outer ring, and the right hand pinches the inner steel ring and pushes it in all directions. If it feels loose when pushed, it is severely worn.
▲ Repair failure: The rust on the outer surface of the bearing can be erased with sandpaper and then washed in gasoline; If the bearing has cracks, the inner and outer rings are broken or the bearing is excessively worn, the new bearing should be replaced. When replacing a new bearing, use the same bearing as the original model.
2. Shaft troubleshooting
▲ Shaft neck wear; When the shaft neck wear is not large, a layer of chrome can be plated on it and then ground to the required size; When there is more wear, it can be surfacing on the shaft neck and then cut and polished on the lathe; If the shaft neck wear is too large, it is also turned 2-3 mm on the shaft neck, and then a sleeve is placed on it, and then turned to the required size.
▲ Shaft bending; If the shaft of the crusher is not bent, it can be repaired by polishing the shaft neck and slip ring; If the bending exceeds 0.2mm, the rotating shaft can be placed under the press, and the bending can be corrected at the bending point. The corrected shaft surface is polished by a lathe; If the bend is too large, a new shaft will need to be replaced.