2014年7月9日星期三

Fixed according to the work load of the size taper roller bearing

In order to ensure the 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 Sealed bearing  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.
(3) If the bearing at high speed operation, and higher operating temperature, should pay special attention to rotating rings can not be too loose to prevent the tie appeared eccentric, and a gap can not be fixed ferrule to prevent the ferrule deformation under load taper roller bearing and vibration excitation.
Impact (4) to take a small Four-Row Taper Roller Bearing fixed ring interference fit condition is to match the shape of the surface of both sides have high accuracy and less roughness, or cause installation difficulties disassembly harder, also need to consider the thermal expansion of the spindle .
(5) the use of pairs of angular contact ball bearing spindle, mostly lighter loads, such as interference with its larger, its internal axial preload amount will be significantly larger, adversely affected. Double row cylindrical roller bearings and tapered roller bearing spindle spindle, its load is relatively large, so its interference with relatively large.

1 条评论:

  1. For the large slewing bearing, Vibration inevitably comes into being in the course of rotating, and the impact brought by vibration may impair the intensity of assemblies.

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