(A) basic concepts and terminology
1, life
Refers to a rolling bearing, a ring (or washer) or to scroll through the materials before the first signs of fatigue propagation, a ring (or washer) relative to another ring (or washer), number of revolutions.
, Reliability (ie, the bearing life and reliability)
Refers to a group operating under the same conditions, nearly the same Rolling expect the percentage to meet or exceed the prescribed life. The reliability of a single rolling bearing of the bearing or the probability of exceeding the prescribed life.
3, the static load
When the relative speed of rotation of the bearing ring or gasket is zero (to the heart or thrust bearings) or when the raceway components in the rolling direction movement (linear bearing), the role of the load on the bearings.
4, static and dynamic load
When the relative rotation of the bearing rings or gaskets (to the heart or thrust bearings) or when the rolling element in the rolling direction of movement (linear bearing), the role of the load on the bearing.
5, rated life
Dynamic load or axial to radial basic rated basic dynamic load rating based on the life prediction value.
6, the basic rating life
Reliability associated with 90% rated life.
7, radial basic dynamic load rating
Refers to a set of the Rolling supposedly able to withstand constant radial load, this loads the basic rating life of one million revolutions. For single row angular contact bearings, the load is caused by the bearing ring with each other to produce the radial component of the pure radial displacement of the load.
8, axial basic dynamic load rating
The center of the axial load constant refers to the hypothetical role of rolling bearings, the basic rating life of rolling bearings in the load under the action of one million revolutions.
9, the equivalent dynamic load of radial (or axial)
Refers to a constant radial load (or the center axial load), the loads, rolling bearings have the same life and actual loads.
10, radial (or axial) and the basic static load rating
Refers to the rolling element and raceway permanent deformation corresponding to the radial static load (or the center axial static load). If the zero load, roll the child and the raceway (roller bearings) for or assume that the total amount of permanent deformation for a normal bus (all contacts), the maximum contact stress, the rolling element and raceway contact points generated for the rolling element diameter of 1/10000. Single row angular contact bearings, radial load rating cause the radial component of the bearing rings relative to each other pure radial displacement of the load.
11, radial (or axial) equivalent static load
The radial static load (or the total amount of permanent deformation of the rolling element and raceway contact at the center of the axial static load) causes the maximum stress under actual load conditions, the total permanent deformation of the same.



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