The strength and stiffness of the differential cage is very important issue, because it affects the functionality of the other components of powered axles. The problem is that for the stress analysis of the differential cage is not possible to use conventional strength and elasticity approaches, because the differetial cage has very complex geometrical shape and is also loaded by the combination of forces generated by the load engagement of the bevel gear. Therefore numerical simulations are more and more frequently used to solve this complex problem when the main task is creation the computational model that correspond the real state. The present paper deals with designing the computational model of the cage differential drive of the rear powered axle of utility vehicle. This model is then used for the strength structural analysis of the differential cage assembly. Presented computational model takes into account also the load of the differential cage thanks to the preload in strength bolts which join the bevel crown gear and differential cage. and Obsahuje seznam literatury a názvosloví