The object of this study was to investigate for improving of the homogeneous stress distribution according to sliding cage geometry. In order to achieve this, the sliding cage were modelled as type A, type B and type C, then the sliding cage were applied at A-IMS assembly. The numerical simulation was performed by SOLIDWORKS SIMULATION commercial code and the torque range was applied from 10N·m to 40N·m at A-IMS assembly. The results of simulation were compared in terms of Von-mises stress, principal stress and displacement characteristics. Each stress of type B were the highest value. In other hand, Von-mises stress of type A and type C were less than yield stress.