The relationship between rolling bearing clearance and rotational flexibility

Rolling bearing clearance and rotational flexibility of the interrelationship, the complete set of bearings radial clearance measurement is not easy. The measuring force causes the collar and rolling body itself and its contact to produce elastic deformation, the amount of deformation is the multiple factor causing the measurement error, it is related to the measuring force, the contact state and the position of the rolling body.

Rolling bearing rotational flexibility is generally in the horizontal position check, usually the inner ring fixed (or hand-held inner ring), hand rotation of the outer ring, check the bearing rotation when there is abnormal sound and blocking phenomenon. Generally speaking, the bearing rotates when the duration is long, stop slowly, flexibility is good. Conversely, the rotation time is short, stop suddenly, flexibility is not good. Because the bearing structure type and size is different, its rotational flexibility should also have different requirements. For example, single row to the heart of the ball bearing, single row to the heart of the thrust ball bearing, due to the contact area between the rolling body and the ring is small, these bearings rotate faster, and double row to the heart of the spherical bearing and thrust roller bearing, due to the rolling body and the contact area of the raceway is larger, and the weight of the outer ring is smaller, in the check its rotational flexibility, although plus a certain load, but its light degree is still less than the single row to the heart of the ball bearing. For very large bearings, when it will rotate, there should be no jamming phenomenon, and the rotation sound is generally not checked