2014年7月9日星期三

Bearing Test Machine for mechanical requirements match

Because of their Bearing Test Machine or less, thus requiring its mating parts have a high dimensional accuracy and shape accuracy, especially with the surface to be controlled with precision bearing the same horizontal, which is crucial, but also the most easily overlooked.
Attention must also match the mechanical precision bearings if not meet the above requirements, often makes precision bearings error occurs several times larger than the original high speed bearing after installation, or even 10 times more errors, totally not become a precision bearings, because the match machine member is often not the error is superimposed on the bearing simply error, but in the type of amplification with multiple go.
2. Precision bearings with
In order to ensure the super-precision bearing after installation without excessive deformation must do:
(1) shaft and housing bore roundness and a shoulder block to the verticality of precision bearings according to the respective requirements.
(2) it is necessary to accurately calculate the amount of interference with the rotation of the ring, but also accurately calculate the appropriate amount of fixed rings.
Rotating rings blanch the extent possible, the amount of interference should also get smaller. As long as the effects of thermal expansion and ensure the operating temperature, and the maximum speed under the influence of centrifugal force, so as not to cause a tight fit creeping or sliding surfaces. Fixed according to the work load of the size of the ring and bearing size, select a very small clearance fit or interference fit, too loose or too tight is not conducive to maintaining the exact original shape.

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