Jixie chuandong (Nov 2020)
Analysis on Cage Dynamic Characteristic of Ultra-low Temperature Angular Contact Ball Bearing
Abstract
The bearing used to support turbopump works in ultra-low temperature environments， its cage pockets is elliptical usually. Based on the dynamics theory of the rolling bearings， the dynamics differential equations of angular contact ball bearing are established in which the pocket shape of the cage is elliptical. The influences on cage slip ratio and friction power consumption that caused by different working conditions and different structural parameters are investigated. The research show that， as the bearing speed， radial clearance and pocket axial clearance increase， the cage slip ratio increases， as the bearing load， guide clearance and pocket circumferential clearance decrease， the cage slip ratio decreases. As the bearing speed， axial load clearance increase， guide clearance， pocket circumferential clearance and axial clearance increase， friction power consumption increases， as the radial load and radial clearance increase， friction power consumption decreases.
