2015年1月9日星期五

A cylindrical bearing installation space

Tight fit of the bearing inner ring and the shaft, the outer ring bearing hole is relatively loose fit of the non-separation of bearings installed, can press the bearings installed in the shaft, and the shaft bearings mounted together along with the bearing hole inside, if the bearing is small, can also be used a metal hammer tap softer ferrule end face is forced into the bearing, but the striking force to be evenly distributed in the bearing rings.
Bearing outer ring and the bearing hole is a tight fit, while the inner ring and the shaft is relatively loose fit can be installed first day of the shaft bearing.
Bearing ring and shaft or housing bore are a tight fit when applied to install a special set of barrels while the rotary bearing pressed onto the shaft or bearing housing.
Separate bearing installation due to inner and outer rings, respectively, can be easily mounted to the shaft or rolling mill bearing housing, then that should be noted is that the already installed inner shaft insert has been installed when the outer ring of the bearing box try to keep it concentric to prevent abrasions rolling elements and raceways.
When the tomb bearing large scale, by the installation of days required for large or heavy duty bearings work interference with the use of larger and therefore have difficulty when cold installed, you will need to pre-heat the bearing inner ring or bearing after installation. When installing hot, the heating temperature should be strictly controlled. When heating slewing ring bearings, the maximum heating temperature should not exceed 1200C, should generally be in the 80 ~ 1000C. Bearings with shields or seals can not be heated, otherwise it will cause the loss of lubricant. Beauty can be electric induction heating oil bath heating methods.

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