The performance of the rolling bearing was analyzed

In the application, in order to analyze the performance of the rolling bearing, you must make sure every ball or roller load. In most applications, the ball or roller bearing under part load performance will determine the service life. For example a slight radial load on the thrust bearing of contact Angle is 90 °, will make bearing failure quickly. Similarly, a role on the contact Angle of deep groove ball bearings, thrust load will be as the final formation of the contact Angle and significantly enlarged. Will discuss in chapter 7 action of load distribution in the ball or roller, it will be clear that each load bearing roller way will also affect other hydraulic body load. In angular contact ball bearing, ball load will also significantly affect the speed of the ball and cage. Therefore, this chapter is a foundation, even so is according to the preliminary analysis of the rolling bearing. Case 5. 1 role the axial load produced by ball radial load problem: case 3. 3 209 DCBB each ball bearing thrust (under The axial) Load is 445 n, assumes that the contact Angle is not load changes ( This assumption is not accurate, here only to illustrate the problem. ) How much is the radial load, each ball? Solution: by example 3. 3 = 725 = 7。 The type 4170 ( 5. 3) Q = 0, tana Q Q = 3419 n 445 ana tan ( 7. 417°) Case 5. 2 under the thrust load, the angular contact ball bearing in the ball method to the load problem: case 3. 3 218 acbb thrust angular contact ball bearing under each ball Q ( The axial) Load is 2225 n, assumes that the contact Angle is not changing with load ( This assumption is not accurate, here only to illustrate the problem. ) , how much is the normal load of each ball? Solution: by example 3. 3a＝38°54＇＝38. 9 ° by type ( 5. 3) 2225 Q = sina tan ( 38. 9°) = 3543 n case 5. 3 caused by axial load of tapered roller end face and penal load problem: 9000 series large contact Angle of taper roller bearing size is as follows: a1 = 22 °. ＝290 a1＝64( With the bearing axis Angle) D = 22。 86 mnm l=30. 48毫米