Disassembly Of Bearing

Remove bearings with the same care as when installing them.Take care not to damage the bearing and its parts, especially the disassembly of interference fit bearing, which is difficult to operate.Therefore, in the design stage to consider in advance to facilitate disassembly, according to the need to design and manufacture disassembly tools is also very important.During the disassembly, the disassembly method and sequence shall be studied according to the drawing, and the bearing mating conditions shall be investigated, so as to ensure the disassembly operation.1. Outer ring removal Remove the outer ring with interference fit. Set screws for outer ring extrusion screw at several places on the circumference of the shell in advance, tighten the screw equally on one side and remove at the same time.These screw holes are usually covered with blind plugs, tapered roller bearings, etc., with several incisions arranged on the housing baffle shoulder, which can be removed by using a pad block, by using a press machine, or by tapping gently.2. The disassembly of the inner ring of the cylindrical bore bearing can be easily pulled out by pressure machinery.At this point, pay attention to the inner ring to bear its pulling force.The inner ring of large bearing is removed by oil pressure method.An oil pressure is applied through an oil hole arranged on the shaft to facilitate drawing.For bearings of large width, the hydraulic method and drawing clamp are used for disassembly.The inner ring of NU and NJ cylindrical roller bearings can be removed by induction heating.A method of heating the part in a short time to make the inner ring expand and then drawing.3. Disassemble and disassemble the relatively small bearing with fixed sleeve, support the inner ring with the retaining block fastened on the shaft, turn the nut back for several times, and then use the pad block to hammer to disassemble.For large bearings, it is easier to disassemble by using oil pressure. Pressurized oil feeding is carried through the oil hole on the taper hole shaft to make the inner ring expand and remove the bearing.During operation, the bearing may come out suddenly, it is better to use the nut as a retaining block.