Bearing radial clearance - Bearing clearance definition

Radial clearance of preloaded state, can bear radial load bearing, the radial internal clearance G: Angle in different direction, there is no external load one ring relative to the other ring from a radial eccentric limit position, move to the opposite extreme position of the arithmetic mean of the radial distance. Axial clearance a preloaded state, can carry axial load in both directions of bearing, the axial internal clearance G: there is no external load, a relative another ring, ring from an axial limit position to move to the opposite extreme position of the axial distance of the average. 2 bearing in the different stages of its clearance clearance of bearing in the different conditions will have corresponding change, in particular, can be divided into: 1) Original clearance bearing clearance refers to the original bearing before installed on the machine, after complete the clearance is under a state of freedom. So the original clearance inspection clearance is often used as a substitute. Inspection clearance is in the state, under the condition of applying load measurement, instrument detection and clearance data, yan said on the bearing of the original clearance is not the same, but in general the two on the readings were similar, and thus can be replaced each other without much error. 2) Effective clearance effective clearance refers to the bearing clearance or work after installed on the host, under certain load, reaches a certain temperature stable operation condition, existing in the actual bearing clearance. Obviously, the effective clearance is smaller than the original clearance. 3 bearing clearance existed in the role and requirements of the bearing clearance is flexible in order to guarantee the bearing without some blocks, but also to ensure the bearing smooth operation, no significant settlement, the axis of the bearing and the number of rolling element load as much as possible. Therefore, bearing clearance to the bearing dynamic performance ( Noise, vibration and friction) And rotation accuracy, service life, Wear and fatigue) The carrying capacity has very big effect. A: on the service life of the bearing in the next article: bearing anomaly