Theoretical and experimental verification of one stage cycloidal gearbox efficiency

  • Krzysztof OlejarczykEmail author
  • Marcin Wikło
  • Krzysztof Kołodziejczyk
  • Roman Król
  • Kazimierz Król
Conference paper
Part of the Mechanisms and Machine Science book series (Mechan. Machine Science, volume 73)


The article presents a theoretical efficiency calculation of a one stage cycloidal gearbox and its experimental verification on the testing bench. The methodology of numerical calculation is presented in the first part of the article. The gearbox power loss was divided into separate parts, and its presentation on a percentage share plot shows components with the highest influence on the efficiency. A comparison of experimental and theoretical results for different values of the velocity on load is presented in the second part. To be able to compare the results from theoretical calculations with experimental results, all working conditions during the test of the gearbox were set to identical values from calculations, i.e. oil used, the level of the oil, braking torque, input velocities, and constant temperature.


cycloidal gearbox theoretical efficiency efficiency measurements 


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The authors acknowledge for cooperation and financial support of Airbus Helicopters.


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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Faculty of Mechanical EngineeringUniversity of Technology and Humanities in RadomRadomPoland

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