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Selection of roll bearing types
Source: Bearing network time: 2014-07-13
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1. Lifetime refers to a set of rolling bearings; the data of one ferrule (or washer) or rollover is preceded by the first fatigue expansion mark; the rotation of one ferrule (or washer) relative to the other ferrule (or washer) number.
2, the degree of reliability (ie the reliability of the bearing life)
Refers to the percentage of a set of nearly identical rolling bearings that are expected to reach or exceed the ruled life under the same conditions. The reliability of a single rolling bearing is the probability that the bearing will reach or exceed the ruled life.
3. Static load When the relative rotational speed of the bearing ring or washer is zero (central or thrust bearing) or when the raceway element does not move in the rolling direction (linear bearing); the effect on the bearing.
4. Dynamic load bearing ring or washer relative to rotation (central or thrust bearing) or when the tumble element moves in the rolling direction (linear bearing); effect on the bearing load.
5. The extra life is based on the radial extra dynamic load or the axial fundamental extra dynamic load as the base life guess value.
6, the extra extra life is related to the extra life of 90% reliability.
7. The radial fundamental extra dynamic load refers to a stable radial load that a rolling bearing is supposed to accept; the fundamental extra life under this load effect is one million revolutions. Regarding the single-row angular touch bearing; the load is the resulting The radial weight of the bearing ferrules with a pure radial displacement of the load.
8. Axial fundamental extra dynamic load refers to the stable intermediate axial load envisaged in the rolling bearing; under this load effect, the fundamental extra life of the rolling bearing is one million revolutions.
9. Radial (or axial) equivalent dynamic load refers to a stable radial load (or intermediate axial load); under this load effect; the rolling bearing has the same life as the actual load effect.
10. Radial (or axial) fundamental additional static load refers to the radial static load (or intermediate axial static load) corresponding to the total permanent deformation of the rolling body and the raceway. If under zero load; the roller and When the raceway (roller bearing) is or is assumed to be a normal busbar (full line touch); under the maximum touch stress; the total eternal deformation occurring at the roll and raceway touch is 1/10000 of the roll diameter. Touch bearing; radial additional load is the radial weight of the load that causes the bearing rings to be relatively purely radially displaced.
11. Radial (or axial) equivalent static load The radial static load (or intermediate axial static load) will cause the total eternal deformation of the torsion body and the raceway touched by the maximum stress and the actual load condition. The total eternal deformation is the same.
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