These screw holes are usually covered with blind plugs and separable bearings such as tapered roller bearings. When unloading a small-diameter bush, it is best to use a stepped punch. The oil is pumped through the oil hole on the tapered shaft to expand the inner ring to disassemble the bearing.

The small diameter of the punch matches the inner hole of the bushing. Several cutouts are provided on the housing shoulders.The punch is made of steel, the top of the hammer is processed into a spherical shape, so that the end contacting the workpiece is usually inlaid with soft metal, such as copper, aluminum, etc. Remove the outer ring of the interference fit.

Tighten the screws evenly while removing them. Use spacers to remove them with a press or gently tap them. Bearings with a large width can only be disassembled by using oil pressure and drawing fixtures together. A method of heating a part in a short time to expand the inner ring before drawing. It is better to use the nut as a stopper China INA Bearings .

The oil pressure method is adopted for the inner ring disassembly of large bearings. The large diameter of the punch is about 0. For the disassembly of large-diameter bushes and rolling bearings, casings are often used.5mm smaller than the outer diameter of the bushing. Disassemble the relatively small bearing with adapter sleeve, support the inner ring with the stopper fastened to the shaft, turn the nut back several times, and use the spacer to knock it off with a hammer.

To remove them from the holes, the method of unloading is also commonly used. When unloading, the hammered end face of the bushing should be cushioned. Sliding bearing bushings and rolling bearing jackets are interference fits in the holes

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