Abstract
The crossed axle traction drive developed by authors has been applied to the Shaft Drive CVT (S-CVT). The proper design of crossed axle traction drive is required to improve the efficiency of S-CVT. In this paper, the theoretical power-transmitted efficiency is examined using a shear model of traction in EHL contact area. The traction coefficient decreases due to the spin and large contact pressure. The relation between traction curve and sizes of disk and roller is obtained and it is useful to design the crossed axle traction drive. The result of calculation gives good agreement with the result of experiment.
