Abstract
Cycloidal reducers are nowadays widely used in various industrial fields, from robotics to their use in the latest electric motors. Their ability to achieve high reduction ratios while maintaining compact geometries is just one of the reasons why the study of such component is highly relevant. In this work, a cycloidal reducer with fixed rollers was studied. The main purpose of this research is to propose an analytical-numerical method for calculating the efficiency of the system. First, a finite element simulation of the reducer was developed. The data was then processed to calculate the gearbox efficiency. Five different combinations of rotation speed and transmitted torque were tested. Eventually, these values were compared with data collected from literature. The comparison between the two resulted in a maximum error of 1.95%, confirming that the model predicts the behavior of a real reducer with good accuracy. The numerical simulation considers only some of the causes of power losses, and in this regard, it needs further implementation of the model to be able to consider all types of losses of a real-world cycloidal reducer.