FAG bearings installation in the host is completed, such as measurement of FAG bearing spindle radial runout, can be found in every turn measurements have certain change; continuous measurement, can be found after a certain speed, this change will be repeated approximation. Measure this change index for cyclic rotation accuracy, change required to approximate repeats a few representative cycle of rotation accuracy of "cycle", in the period of quantity change of high amplitude, is the circular rotation accuracy is poor.
The following common adjustment methods of FAG bearing radial clearance:
1, multi-fixed oil wedge bush, do not allow the scraping and adjust bearing clearance gap is not appropriate in principle, should be replaced with new tile.
2, the cylindrical and elliptical bearing clearance, can use manual grinding scraping method of adjustment and scraping or FAG bearing surfaces plus pad after turning
3, the cylindrical and elliptical bearing clearance, the adjustment method of bearing surfaces padded hand allows the scraping or situation.
4, the wedge tilting bushing of oil, do not allow scraping tile, the gap is not appropriate to be replaced in due course. Pad with adjustable thickness, can adjust block behind the tile and stainless steel pad under, or thinning method of thickness of block adjustment adjustment tile volume. Note the wedge tilting bushing of oil, the same group of tile thickness error should be less than 0.01mm.
As to preload on the FAG bearing spindle speed, will gradually rise to close to the speed, bearing the "break-in" effect, can improve the cycle of rotation accuracy of the spindle.