Rolling - Structure

Roller bearing type, structure, size and accuracy class and so forth with the code represents. No special requirements for normal bearings, Chinese code with four Arabic numerals. The front one is a type code, followed by the diameter of the series code, the last two digits for the diameter size code. The bearings have the same diameter of several different diameter, of special light, light, medium and heavy series, respectively, with 1,2,3,4 expressed. Special light series, minimum diameter, heavy series OD Max. 20 to 459 mm diameter bearings, bore size code is bearing diameter by 5. For example 6308:6 represents angular contact ball bearings, three representatives of the series, 08 on behalf of the bearing inner diameter of 08 × 5 = 40 mm.
Bearing load and life of any one element appears before contact fatigue wear running total number of revolutions at a certain speed or the total number of hours worked, called the bearing life. Greatly varied life of rolling bearings, bearing the same batch of operating under the same conditions, its life can vary several times or even several times. Bearing the same batch of 90 percent before the fatigue spalling can meet or exceed the total number of revolutions (or working hours) when referred to the rated life L. Rated life of 1 million revolutions can bear the load of dynamic load rating C. Withstand the maximum load of the rolling element and raceway contact points and the amount of plastic deformation of the rolling element diameter reaches ten thousandth, can bear the load of static load rating C0. Rated load greater load bearing capacity of the stronger. Radial bearings rated load is a pure radial load, thrust bearing load is a pure axial load. Actual load bearing condition often associated with different rated load shall be converted into the equivalent load. In the equivalent dynamic load P under the action of bearing life and the actual life of the same load conditions. In the equivalent static load P0 under the action of the maximum load of the rolling element and raceway contact points with the total amount of plastic deformation under the actual load conditions the same. Bearing rating life, dynamic load and dynamic load equivalent relationship between