Three cooperation relationship between contact ball bearing and the bearing seat

Aeroengine transmission with high speed, wide speed range, start times, the characteristics of compact structure, three point contact ball bearings and cylindrical roller bearing combinations can adapt to the above characteristics. With three contact ball bearings and cylindrical roller bearing combination as a fulcrum composite applications, on the basis of three contact ball bearing and bearing the cooperate relationship between the three kinds of forms: both axial and radial clearance; Only the radial clearance and axial and radial are no clearance. 1, both axial and radial clearance between figure 1 three contact ball bearing and bearing axial and radial clearance both axial and radial clearance, three point contact ball bearing installation position of total radial activity should be greater than cylindrical roller bearing installation position of the radial activity; Axial travelmotion structure design at the same time should consider the impact on the shaft parts. Three axial force contact ball bearing, cylindrical roller bearing under radial force. This kind of structure design is simple, but the long life of the transmission device should be used carefully, has some influence of bevel gear transmission and processing. 2 in figure 2, only the radial clearance between three contact ball bearing and bearing radial clearance only radial clearance only three contact ball bearing need to specify the location to install, the location specified by reasonable bearing load calculation is given. Three contact ball bearing in addition to bear axial force. Start state also bear all the radial force; Work status also bear radial force. Cylindrical roller bearing radial force. This kind of structure design is simple, can have the additional load combination bearings. 3, axial and radial no figure 3 ball bearings and bearing clearance between the axial and radial without clearance both axial and radial clearance, contact ball bearing must be installed on the elastic support at three. Three contact ball bearing in addition to bear axial force also share a few of radial force, cylindrical roller bearing most of the radial force. This kind of structure design of complex stress most reasonable adaptation each kind of condition, can change the rotor bearing rigidity.