Notes On The Installation Of Oil-free Bearings

1. Should determine the axis, with the shaft shell whether there is bumps, protrusions and so on.

2. Whether there is dust or casting sand attached to the bearing shell surface.

3. Although the minor bumps, protrusions, etc., if you want to use oil mill or fine sandpaper to remove.

4. In order to avoid bumps during loading, the shaft and shaft shells should be wiped with a small amount of lubricant. To install the bearing in the inner ring when the force to be installed in the bearing shell bearing, the force must be in the outer ring. To force the bearing, be sure to pay attention to the power of vertical and even down, partial play will cause the bearing injury. To this end, try to avoid partial play.

5. Oil-free bearing bearing retainer and sealing plate is absolutely not force. The use of hammer and casing installation method is generally used method, because it will damage the bearings, so do not directly hit. Be sure to figure in general, so that the sleeve in the middle and beat into. The hammer should be tapped lightly. In the mechanical structure, the inner and outer rings are tight fit, you should use the plate, be sure to force at the same time added to the inner and outer ring pressed into it. If only the inner ring afterburner pressure, the force will be introduced into the ball and the outer ring, therefore, will cause injury in the track surface. When the bearing with a large margin is mounted on the shaft, the method of heating the bearing to 80 to 90 degrees in the clean oil to expand the inner diameter is widely used.

6. Bearing hardness, because of overheating and reduce the worry, therefore, must not exceed 100 degrees. At this point, the bearings must be suspended using wire, or placed in the metal wire, the support plate, not placed in the bottom of the groove. Bearing to reach the desired temperature (100 degrees below), it should be immediately removed from the tank, quickly set into the shaft, the bearing will shrink as the temperature decreases, sometimes shoulder and bearing face, will produce a gap, therefore, Use the tool to press the bearing in the axial direction.