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BEFORE MOUNTING A BEARING


Every possible care must be taken for following factors, to ensure smooth and satisfactory bearing performance.

  • Before unwrapping a bearing a bearing, all designation and symbols on carton should be thoroughly checked to make sure that bearing is exactly to required specification.

  • The fitter, must have a proper knowledge of bearing of bearing Mounting procedure, various operations involved, knowledge of force to be applied and amount of lubrication enquired etc.

  • Generally, anti frication bearings are coated with rust primitive oil. Therefore bearings should never be washed or cleaned before mounting. Washing and cleaning of bearing means damaging the bearing.

  • Any packed bearing must be used as it is. No supplementary modifications should be done to a bearing, such as putting additional shield, groove on outer race, taper bore, slots, lubricating hole etc. Such modification may damage the bearing and reduce it's a normal life.

  • For bearing, DIRT means Damage. All bearings must be properly protected from dirt. Work-shape premises used for bearing mounting must be neat, clean, dust-free and absolutely dry.

  • All tools to be used for mounting operations, must be totally clean.

  • Care should be taken to see that bearing shaft, housing and other parts are absolutely clean and dry.

  • Dimensions and tolerances of shaft and housing must be checked for utmost accuracy. Inaccurate shaft or housing dimensions may misalignment and thereby invites premature break-down of the bearing.

  • Shaft and housing dimensions should be kept in such a way that bearing gets a tight fit, (not to tight) on shaft and housing. in case inner ring slips in housing, result will be premature failure.

  • Small size bearings are generally passed on to the shaft whereas large size bearings are heated in an oil bath ( around 80 degree c.) for easy placement of a bearing on to the shaft.



 

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