In this assignment "Analysis of the high-torque radial-piston hydromotor", it was necessary to calculate the simulation in Microsoft Excel using the calculations to select the optimum version of the cam ring. For example, a Hägglunds Rexroth Cab 30 hydraulic motor was used. The paper is divided into several chapters. Throughout the introduction, little is said about the types of engines that convert energy into mechanical work, after which the task and goals that are desired to be achieved by solving the final work are described in detail. Before the estimation is described, the hydrostatic system with its components of this kind of hydromotors and their working principles is described. After that, a radial piston hydromotor calculator was calculated in which all the working parameters that would be needed to perform the simulation were calculated. A total of three simulations were performed, which required the optimal deflection path. The first simulation gave the answer that the polynomial curve has the highest working performance values at a speed of 150 rpm, in the second simulation the working parameters for each deflection path are processed at 150 rpm, 100 rpm and 50 rpm the optimum speed of rotation would be chosen and thus extended the life of the hydromotor, and by the last simulation it was known how much flow and torque produced the active pistons at maximum speed. Followed by a conclusion in which the optimal polynomial curve is chosen and the choice is justified.