2014年8月15日星期五

mobile crane bearing The size of load

Deep groove ball bearings generally consists of a pair of rings a retainer, a group of rigid ball and a group of cage, deep groove ball bearing type code 6 is most popular, the most widely used one kind of bearing, deep groove ball bearing has the advantages of simple structure, mobile crane bearing convenient use, is the largest production volume, bearing a certain axial load. When the bearing radial clearance increased, with the function of angular contact ball bearings, can bear large axial load. ,
Deep groove ball bearings are mainly used to withstand pure radial load, also can bear radial load and axial load, when the only subject to pure radial load, the contact angle is zero. When deep groove ball bearings with a larger radial clearance, with angular contact bearing performance, can bear large axial load. Deep groove ball bearing friction coefficient is small, the limit speed is very high, especially in the high speed operating condition of large axial load, deep groove ball bearing thrust ball bearings are more advantages Other bearing than. The other kind of bearing with the same size, such bearing small friction coefficient, high limiting speed. In high speed should not adopt the thrust ball bearings are available in case the axial load of bearing, deep groove ball bearings mounted on the shaft, the axial displacement of the shaft or housing restrictions in bearing axial clearance range. At the same time the shell, when the hole and shaft (or outer ring of the inner ring) relative to tilt, (not more than 8-16 according to play determination) can still work properly. However, that is inclined to exist, it is necessary to reduce the service life of bearing.
Compared with other types of bearings, deep groove reali slim bearings ball bearings of the same size, friction loss, high limit speed, should not be used in high speed thrust ball bearing case, available such bearings subjected to pure axial load. If we improve the manufacturing precision, and the bakelite, bronze, aluminum and other materials of the solid cage.                                                            

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