How to disassemble bearings

Time：

Jul 09,2022

Bearing disassembly is regular maintenance, bearing replacement. After disassembly, if it continues to be used or the state of the bearing needs to be checked, the disassembly should also be carried out with the same care as the installation. Attention should be paid to not damaging the bearing parts, especially the disassembly of interference fit bearings, which is difficult to operate.

It is also very important to design and make disassembly tools according to the needs. In disassembly, according to the drawings study disassembly method, sequence, investigation of bearing matching conditions, in order to obtain the disassembly operation foolproof.

The removal of the outer ring interference fit of the outer ring, in advance on the circumference of the shell set several outer ring extrusion screw screws, one side equally tighten the screw, while disassembling. These screw holes are usually covered with blind plugs, tapered roller bearings and other separate type bearings, set out a few notches in the shell block shoulder, use a pad, remove with a press, or gently knock the removal.

The removal of the inner ring can be easiest when pulled out by a press. At this point, pay attention to the inner ring to bear its pulling force. Moreover, the pull-out clamp shown is also used, no matter what kind of clamp, it must be firmly stuck on the side of the inner ring. For this reason, it is necessary to consider the size of the shaft retaining shoulder, or study the processing of the upper groove at the retaining shoulder, so as to use the drawing clamp.

The inner ring of large bearing is disassembled by oil pressure method. Oil pressure is applied through the oil hole arranged in the bearing to make it easy to draw. The bearing with large width is disassembled by oil pressure method and drawing clamp.

The inner ring of cylindrical roller bearing can be disassembled by induction heating method. In a short period of time heating local, so that the inner ring expansion after drawing method. Induction heating method is also used when a large number of these bearing inner rings need to be installed.

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