Graphical Methods Used to Solve Misalignment Problems of Mechanical Transmissions


  • Ramona-Monica Stoica Military Technical Academy "Ferdinand I"
  • Daniela Voicu
  • Radu Vilău Military Technical Academy "Ferdinand I"


misalignment; mechanical transmissions; graphic method


This paper presents some graphical methods used to solve different misalignment problems of mechanical transmissions. For this purpose, it was created a mechanical transmission composed of an electric motor with a driving shaft, a coupling and a driven shaft mounted on two pillow block bearings. With the use of two dial indicators, there were measured both parallel and angular misalignment of the constituent elements and follow-up, it was realised a graphic display of the measured values, in order to determine the needed adjustments. Such alignment method has a high level of precision and it does not imply expensive devices. Misalignment of mechanical transmissions represents a broad issue in all factories, and the working personnel is constantly interested in ways to remedy such problems.

Author Biographies

Ramona-Monica Stoica, Military Technical Academy "Ferdinand I"

PhD Eng

Daniela Voicu

PhD Eng

Radu Vilău, Military Technical Academy "Ferdinand I"

PhD Eng


[1] Festo Didactic, Industrial Maintenance. Introduction to Mechanical Drive Systems. Job sheet, Canada, 2017
[2] Mobley Keith R, Plant Engineer's Handbook, 54 Shaft alignment, 2001
[3] Piotrowski J, Shaft Alignment Handbook – Third Edition, CRC Presss, Taylor&Francis Group, 2007
[4] Stoica R M, Voicu D, Vilău R, Barothi L, “Aplicații practice în domeniul transmisiilor mecanice. Îndrumar de laborator”, Editura Academiei Tehnice Militare “Ferdinand I”, Bucharest 2021






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