The spindle bearing parameter results

• Operation performance is better than that of ceramic ball bearing has the advantages of full steel bearing, the positioning preload more fully embodied, the speed limit of all steel bearings and ceramic ball bearing 4; n value, positioning preload were 1 X10 and 6.4 XIO 'bucket', fixed pressure preload were 2.4 XIO 'XIO', and 3.4 fixed pressure preload, ceramic ball bearing stiffness is greater than all steel bearings, and the positioning of preload on the contrary.

• In general, the angular contact ball bearings inner ring of the highest temperature, lowest temperature, the outer ring, but the constant preload - Factory rotate speed reaches to a certain value, the temperature may be higher than the inner ring outer ring.

• Measurement of  precision spindle bearings translational inherent frequency and the radial stiffness value and calculated value is consistent, ignore W1) d influence the measurement value is less than the calculated value, indicates that the theoretical analysis is correct.