Abstract:Cage pocket hole shape affects the stability of the cage,it is one of the factors determining the stability of the ball bearing.The effect of cage pocket hole shape of the angular contact ball bearing on the stability of the cage was studied.By taking the cages of square and circle holes as an example,the stability was studied under different working conditions of the angular contact ball bearing axial load,radial load,rotation speed and clearance ratio and groove curvature coefficient,as well as for the influence on average friction torque of the cageouter ring guide face by condition parameters and structure parameters.The results show that with the increasing of radial load and clearance ratio,the average friction torque of cage is reduced,the stability is gradually decreased,and the stability of the cage with circular hole is a little higher than that with square hole.Along with the increasing of axial load and rotation speed,the average friction torque of cage is increased,and the stability is improved,and the stability of the cage with square hole is a little higher than that with circular hole.Along with the increasing of inside and outside groove curvature coefficient,the stability of cage is increased first and then reduced,and the influence of outside groove curvature coefficient on the stability of cage is greater than inside groove curvature coefficient.