Bearing disassembly


The disassembly of the bearing is a regular maintenance […]

The disassembly of the bearing is a regular maintenance, carried out when the bearing is replaced. After disassembly, if you continue to use it, or if you need to check the condition of the bearing, the disassembly should be carried out as carefully as when it was installed. Be careful not to damage the parts of the bearing, especially the disassembly of the interference fit bearing, which is difficult to operate.
It is also very important to design and produce disassembly tools as needed. When disassembling, study the disassembling method, sequence, and investigate the matching conditions of the bearings according to the drawings to obtain foolproof operation.
Disassembly of the outer ring The outer ring of the interference fit is provided with several screws for pressing the screw of the outer ring on the circumference of the housing in advance, and the screw is evenly tightened on one side while being disassembled. These screw holes are usually covered with separate plugs such as blind plugs, tapered roller bearings, etc. Several cuts are provided in the housing to block the shoulders, use pads, use a press to disassemble, or gently tap to disassemble.
It is easiest to remove the inner ring with a press. At this time, pay attention to the inner ring to withstand its pulling force. Furthermore, the pull-out clips shown are mostly used, no matter which type of clips, they must be firmly stuck on the side of the inner ring. To this end, it is necessary to consider the size of the shaft shoulder, or study the processing of the upper groove at the shoulder, so as to use the pull-out clamp.
The hydraulic method is used to disassemble the inner ring of large bearings. Oil pressure is applied through the oil hole provided in the bearing to make it easy to pull. Bearings with large widths are used in combination with the drawing method for disassembly.
The inner heating of cylindrical roller bearings can be dismantled by induction heating. The method of heating the local area in a short time to make the inner ring expand and pull. Where a large number of such bearing inner rings need to be installed, the induction heating method is also used.

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