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This paper presents about idea developed in electric car transmission for transverse application and a torque capacity of 200 Nm to 360 Nm. How current differential case support bearing type is changed with added advantage is discussed. Further, in this paper, effect of change in bearing type is discussed. Detailed study on the effect of change in bearing type is done and also bearing stress and life calculations are computed. Further how current differential case material is changed with added advantage is discussed. Detailed analysis of differential case is done to arrive at feasible lightweight conclusion. Our proposed research methodology is expected to be useful in reducing mass and without reducing desired product life.

This paper deals with an analytical method to calculate the press-fit tolerance and fits between gears and shaft for automotive applications. The relative interferences increase sharply in the small diameter range, therefore one must be especially careful when designing small diameter joints. The strength of press-fit depends on the amount of relative interference; extreme interference leads to excessive contact stresses between the gear and shaft eventually leading to failure. Too little interference leads to slippage of gear on the shaft. In the press fit connection a shaft's spline rolling operation and gear internal broaching is eliminated. It is more economical than a conventional spline connection. Press fit connections are used in various transmission between a shaft and a gear. They are used in 6 speed transmission to 9-speed transmission for (German based Vehicle Manufacturer) heavy and light commercial vehicle company.