The removal of the bearing should be carried out in the same way as during installation. Care is taken not to damage the bearing and the various parts, especially the disassembly of the interference fit bearing, which is difficult to operate. Therefore, it is important to design and manufacture the disassembly tool as needed in the design stage. When disassembling, study the disassembly method and sequence according to the drawings, and investigate the fitting conditions of the bearing to obtain the foolproof operation.
1. Disassembly of the outer ring
To remove the outer ring of the interference fit, install a few outer ring extrusion screw screws on the circumference of the outer casing, and tighten the screw evenly while disassembling. These screw holes are usually covered with a blind plug, a tapered roller bearing, etc., and a plurality of slits are provided on the outer shoulder of the outer casing, and the spacer is used, disassembled by a press, or gently tapped to remove.
2, the removal of cylindrical hole bearings
The removal of the inner ring can be pulled out by the pressure machine. At this point, pay attention to let the inner ring withstand its pulling force.
The inner ring of large bearings is dismantled by hydraulic method. Oil pressure is applied through an oil hole provided on the shaft to make it easy to pull. The bearing with a large width is used in combination with the hydraulic chucking method and the drawing device.
The inner ring of the NU type and NJ type cylindrical roller bearings can be removed by induction heating. A method of heating a part in a short time to expand and pull the inner ring.
3, the removal of the tapered hole bearing
Disassemble the smaller-sized adapter sleeve bearing, support the inner ring with the block fastened on the shaft, turn the nut back a few times, and then use the pad to knock and disassemble.
The large-sized bearing is easier to disassemble by hydraulic pressure, and the oil is pressurized in the oil hole on the tapered hole shaft to expand the inner ring and disassemble the bearing. In operation, there is a possibility that the bearing suddenly comes out. It is better to use the nut as a block.
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