For KOYO import bearing flexibility in how to distinguish

In actual production, we often need to test the rotation of the bearing flexibility of KOYO import bearing radial clearance is not easy to measure, because the measuring force can make the KOYO import bearing ring and rolling body itself and its contact produce elastic deformation, the deformation is measurement error caused by many factors, it has to do with measuring force, contact state and the position of the roller are related. KOYO import bearing rotation flexibility general check in a horizontal position, usually the inner ring fixed ( Or holding a inner ring) , turn the outer ring by hand, to check whether there is abnormal sound bearing rotates and blocking phenomenon. Generally speaking, the duration of the bearing rotates, stop slowly, flexibility is good. On the other hand, the rotation time is short, stop all of a sudden, flexibility is bad. Because of different size and bearing structure of the rotating flexibility also should have different requirements. Such as single row centripetal ball bearings, single row angular contact ball bearing, due to small contact area between ring and roller, these KOYO import bearing rotates is brisk, and double row centripetal spherical bearings, thrust roller bearings, as a result of the rolling element and raceway contact area is larger, and the weight of the outer ring is small, when check the rotation flexibility, coupled with a certain load, but its light degree is still less than single centripetal ball bearings. For oversize bearings, when its rotation, should be no jam phenomenon, for rotating noise doesn't check. Available for bearing cone hole, the following methods complement check KOYO import bearing rotating flexibility, specific operation is as follows: to press the bearing tapered bore into mandrel until combined with certain radial load, under the preload, when a ring rotates to listen to a rolling body should be turning. If the sliding roller instead of rotation, the said ring geometry defect too much or uneven size of roller, the rotation of the bearing flexibility is poor.