Bearing disassembly

Update:26-01-2019
Summary:

The disassembly of the bearing is carried out on a regu […]

The disassembly of the bearing is carried out on a regular basis and 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 the installation. Attention should not damage the bearing parts, especially the disassembly of the interference fit bearing, which is difficult to operate.

It is also important to design and manufacture disassembly tools as needed. When disassembling, study the disassembly method, sequence, and investigation of the fitting conditions of the bearing according to the drawings, so as to obtain the foolproof operation.

To remove the interference fit outer ring of the outer ring, 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 shoulder of the outer casing, and the spacer is used, disassembled by a press, or gently tapped and disassembled.

The removal of the inner ring is the easiest to pull out with a press. At this time, pay attention to let the inner ring withstand its pulling force. Moreover, the pull-out fasteners shown are also mostly used, and regardless of the type of fixture, they must be firmly stuck on the side of the inner ring. To do this, consider the size of the shaft shoulder or study the groove at the shoulder to use the pull fixture.

The inner ring of large bearings is dismantled by hydraulic method. The oil pressure is applied to the oil hole of the bearing 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 cylindrical roller bearing can be removed by induction heating. A method of heating a part in a short time to expand the inner ring and then pull it. In the case where a large number of such bearing inner rings are required to be installed, induction heating is also used.