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ALLOWABLE LOAD OF BEARING HOUSINGS

The allowable loading capacities of the housings differ substantially, depending on the housing shape and the load direction. Since the ball bearing units is complicated in form, it is difficult to calculate their allowable loading capacities. In many cases, such values are entirely different from the actual ones.
  For such reason, the P type housing is taken up as the most popular example. The strength to the load from each direction is shown here as obtained from the actual test.

1. Allowable loading capacity of cast iron housing

As to the P type housing the destruction strength of downward, upward, horizontal and axial directions is shown below.
The difference between the Loading capacity and the destruction of the housing represents the safely of the housing.

 2. Allowable load of pressed housings

Pressed housing shows deformation when subjected to the load. The deformation depends upon direction and amount of the load, form of the housing, and thickness of steel plate. Therefore, the allowable load of the housings must be such an amount that deformation of the housing may not disturbed the function.
The allowable load of the plate housing is approximately 1/3 of the basic load rating in the radial direction and approximately 1/3 of allowable radial load in the axial (thrust) direction.


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