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Proper Installation Of a Mounted Bearing Unit

Proper installation of a mountable bearing unit is crucial to the units' long life. Failure to follow recommended mounting practices can result in short bearing life and poor operation.

Properly installed, a bearing should be firmly supported by two or more balls on each end. A bearing is normally made up of two balls that are mounted on a shaft with two ends, or "bearings". If the bearing housing has only one ball, the shaft is typically made of steel and the bearing housing is made from plastic. Mounting a bearing requires proper attachment of the bearing housing to the shaft. Mounting of the housing should include:

A bearing should be mounted to the shaft on both the top and bottom sides of the housing. Bearings should be placed so that they form a circle around the shaft. It is important to make sure that the housing is positioned in the correct position when the bearing is being installed. Properly mounting the housing will ensure long life and good performance of the bearing unit. Some bearing housing models have a flat top side and a rounded top side, while other models have a rounded top side and a flat top side.


When installing a bearing, it is best to install it as far down as possible on the shaft, especially if you plan on using multiple bearings on your shaft. Bearings should be installed as close to the center of the shaft as possible without bending the shaft. Mounting a bearing properly means placing it as close as possible to the shaft while still allowing enough clearance for moving the shaft freely.

The bearing should be screwed onto the shaft so that it is securely seated between the shaft and housing, but not so tight as to create a stress fracture of the bearing. Bearings are usually screwed together using a bolt, but if you cannot get a straight shaft screw, then you could use a T-nut or a nut sleeve. Some shaft screws do not have threads and are screwed with T-nuts or a sleeve.

Proper mounting of the bearing requires that the housing be screwed onto the shaft using the proper screw. Some bearing models can be screwed into place using a special threaded bolt, while others are screwed into place using a bolt that uses a screw that does not have threads.

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