Refers to a bearing, in which a ferrule (or washer) or the material of the rolling elements occurs before the first signs of fatigue extension, a ferrule (or gasket) relative to the other ferrule (or gasket) the number of revolutions.
2, reliability (ie, the reliability of the bearing life)
Refers to a group under the same operation conditions, nearly the same rolling bearing reaches or exceeds a predetermined percentage of the desired lifetime. Reliability single rolling bearing life for the bearing reaches or exceeds a predetermined probability.
3, static load
When the relative rotational speed of the bearing ring or gasket is zero (or thrust bearing to the heart), or when the scroll direction of the raceway element for no motion (linear bearings), the load acting on the bearing。
4, static and dynamic load
When the relative rotation of the bearing ring or gasket when (or thrust bearing to the heart) or when the rolling elements in the direction of movement when scrolling (linear bearings), acting on the bearing loads。
5, rated life
The basic dynamic load rating radial or axial basic dynamic load rating is based on the life of the predicted value.
6, the basic rating life
Associated with a 90% reliability rating life.
7, radial basic dynamic load rating
Refers to a set of rolling bearings can withstand constant imaginary radial load, the basic rating life under this load for a million revolutions. For single row angular contact bearings, causing the load bearing rings refers to the radial component of each other to produce a pure radial load displacement.
8, the axial basic dynamic load rating
Refers to the imaginary center of the rolling bearing acting on a constant axial load, the basic rating life of rolling bearings under the load for a million revolutions。
9, radial (or axial) equivalent dynamic load
Refers to a constant radial load (or central axial load), in which load, the service life of the rolling bearing has the same effect under the actual load.
10, radial (or axial) Basic static load rating
And the rolling members and that the total amount of permanent deformation corresponding to the raceway radial static load (or the central axis of the static load). If at zero load roller and the raceway (roller bearing) is the total amount of permanent deformation or presumed normal bus (line contact), the maximum contact stress in the rolling element and raceway contact of rolling elements produced at diameter 10000. For single row angular contact bearings, radial load rating for causing the radial component of the bearing rings relative to each other pure radial displacement loads.
11, radial (or axial) equivalent static load
The same total amount of permanent deformation of the total amount of permanent deformation under load and the actual conditions of the radial static load (or central axial static load) causes maximum stress by rolling element and raceway contact points generated.