Date: 2013-08-20

Bearing dynamic load rating and the difference between static load rating

A, rated radial (or axial) load: refers to the Rolling theoretically can withstand constant radial load (or constant axial load). Bearing under the load, the rated life of the bearing of one million rpm. This mainly reflects the ability of the bearing rolling fatigue resistance.
Radial bearings and thrust bearings of the basic dynamic load rating, respectively called basic dynamic radial load and axial basic dynamic load rating, expressed with Cr and Ca.
B, radial (or axial) Basic static load rating: refers to the maximum load rolling element and raceway contact center with the following calculation produces a radial contact stress fairly static load (central axial static load). For self-aligning ball bearings, 4600MPa; For other types of radial ball bearings and thrust ball bearings, 4200MPa; For radial and thrust roller bearings, 4000MPa.
In these contact stress produced under the rolling element and raceway permanent deformation total of about 0.0001 times the rolling element diameter.
Bearings withstand excessive static load or low speeds and withstand shock loading, the rolling element and raceway contact surface will produce permanent deformation. The deformation increases with the load, exceeding a certain limit, it will affect the normal rotation. Radial bearings and thrust bearings were basic static load rating Basic static radial load and axial basic static load rating, and Coa expressed by Cor.
Dynamic load and static load various manufacturers have different designs, and its value is also a greater difference. The manufacturers of the values were recorded in the respective samples. Your equipment in the design process, the load on the bearing is not bearing dynamic load rating, it should be the role of the bearing radial load or axial load.

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