Correctly disassemble the vibrating screen bearing properly

April 16, 2019

Vibrating screen bearings are mostly used in mine vibration machinery, vibrating screen machinery and vibration motors, and are one of the most critical components of such equipment. The bearing conditions are very harsh, not only the environment humidity is large, dust particles are high, the rotation speed is high, the temperature is high, and there is a strong vibration shock, resulting in a very large working load. The bearing has strong bearing capacity, good impact resistance, high reliability, good lubrication performance, and can overcome the deflection of the shaft.

Improper disassembly of the shaker bearing may result in damage inside the bearing. Contaminants may enter the bearing or may cause errors when reinstalled. Therefore, the vibration of the vibrating screen bearing must be very careful, the shaft must have proper support, otherwise the disassembly force may damage the bearing.

1. Disassembly of the outer ring
Disassemble the outer ring of the interference fit, and set several outer ring extrusion screw screws on the circumference of the outer casing in advance, and tighten the screw equally on one side. Disassembled on one side. These screw holes are usually covered with a blind plug, a split-type bearing such as a vibrating screen Tapered Roller Bearing, 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 and disassembled.

2. Disassembly of the vibrating screen cylindrical bore bearing
The removal of the inner ring can be pulled out by the pressure machine. At this time, pay attention to let the inner ring withstand its pulling force.
The inner ring of large vibrating screen bearings is dismantled by hydraulic method. Oil pressure is applied through an oil hole provided on the shaft to make it easy to draw. 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 vibrating screen bearings 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.

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, and turn the nut back several times.

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