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The Actual Influence of Gear Ratio Size on the Service Life of Rolling Bearings in Universal Helical Gear Reducers with External Gearing

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Abstract:

This paper highlights the actual influence of gear ratio size on the service life of rolling bearings within the universal helical gear reducers with external gearing. The service life of a reducer primarily depends on the lifespan of its bearings, and further it depends on the gears, keys, shafts, and other components. However, the overall life time of the reducer depends on the intensity of use, working conditions, and maintenance quality. By analyzing the influence of the gear ratio size on the service life of the reducer, it can be concluded that this factor has a remarkably strong impact - not only in single-, double-, and triple-stage reducers, but also in reducers built within a universal housing designed for double-and triple-stage configurations. This influence is somewhat bigger in triple-stage reducers than in double-stage reducers due to the lower rotational speed of the output shaft. Therefore, by properly selecting the bearings and defining the corresponding load of the reducer for specific gear ratios, efforts are made to minimize the influence of the gear ratio as much as possible.

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Periodical:

Advances in Science and Technology (Volume 181)

Pages:

69-74

DOI:

https://doi.org/10.4028/p-DNIzj6

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Cite this paper

Online since:

August 2026

Authors:

Milan Rackov*, Siniša Kuzmanovic

Keywords:

Bearings, Gear Ratio, Service Life, Universal Gear Reducer

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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References

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