How to improve the precision angular contact ball bearing:
1, the angular contact ball bearing spindle and its precision is still cannot meet the requirements, the bold shaft neck and on the race to replace the inner ring, and the steel ball to dense measurement, to size every three grain of a group, each group of steel ball are separated pick up close to 120 °, due to reduced a heavy processing surface, reduce the heavy blend surface, at the same time improve the axial stiffness for angular contact ball bearing system, and the three largest grain and minimum three grain of steel ball nearly equidistant distribution, and improves the precision of drive shaft rotation, thus satisfying the requirements of the precision of the instrument.
TIMKEN 30205-FANADE Bearings http://www.fagbearings-hk.com/newproduct/TIMKEN-30205-bearings-78829.html can usually install space is restricted. In most cases, the diameter of axle (or angular contact ball bearing inside diameter) is designed according to the mechanical design or other restrictions. So angular contact ball bearing type and size of the choice is determined according to the inner diameter of the angular contact ball bearing. As a result, the main dimensions of the standard of angular contact ball bearing table are compiled according to the international standard diameter.
Standard form of angular contact ball bearing size is various, had better use when in machinery design standards for angular contact ball bearings (this design to the angular contact ball bearing is easy to purchase, just as an aside, here some angular contact ball bearing model does have a catalogue, but some non-standard angular contact ball bearings in China there is no spot, futures will be a long time, sometimes to consider when angular contact ball bearing selection so late time cost and the cost of replacement) angular contact ball bearing load, the load on the angular contact ball bearing, the nature, size, direction is changeable. Usually, the basic load rating on dimension table are displayed. But the axial load and radial load, and so on, also is to choose the suitable for angular contact ball bearing of the important factors. When the size of the ball and needle angular contact ball bearing is, angular contact ball bearings are usually have higher load capacity and bear the larger vibration and shock loads.
2, angular contact ball bearings in the host after the installation, such as the measurement of spindle radial runout, can be found that the each measured value of a certain change; Continuous measurement, can be found that after a certain number of revolution, this change will approximately duplicated. Measure for cyclic rotation accuracy degree of the change, change the approximately duplicated the revolution, on behalf of cyclic rotation accuracy "cycle", the value of the amplitude changed in quasi cycle, is the cycle rotation accuracy is poor. Such as the proper preload on the spindle, the speed gradually rise to close to work, to implement angular contact ball bearing "break-in" effect, can improve the circulation of the spindle rotation accuracy.