Comprehensive Service Life Evaluation Methods for RV Reducers under Different Eccentricities

LI Sen; WEI Tengyue; LI Yiwan; ZHANG Kai

doi:10.19554/j.cnki.1001-3563.2026.03.020

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Packaging Engineering ›› 2026, Vol. 47 ›› Issue (3) : 189-197. DOI: 10.19554/j.cnki.1001-3563.2026.03.020

Automatic and Intelligent Technology

Comprehensive Service Life Evaluation Methods for RV Reducers under Different Eccentricities

LI Sen¹, WEI Tengyue², LI Yiwan², ZHANG Kai^2,*

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Abstract

To solve the problems of long test cycle and high cost of service life evaluation of RV reducers, the work aims to provide an efficient calculation framework for eccentric shaft service life based on finite element method and propose a calculation method for evaluating RV reducer service life by combining eccentric shaft and eccentric shaft bearing to shorten the time consuming caused by service life test. The finite element theory was used to establish the service life evaluation model of eccentric shafts, and the service life evaluation model of eccentric shaft bearings was established based on the basic model of bearing service life. Through the service life analysis of eccentric shafts and eccentric shaft bearings under different eccentricities, the weak parts of eccentric shaft mechanisms under different eccentricities were obtained, so as to evaluate the service life of RV reducers. With the increase of the eccentricity, the service life of the RV reducer increased. When the eccentricity was greater than 0.97 mm, the weak part was the eccentric shaft bearing. When the eccentricity was 1.25 mm, the maximum service life of the RV reducer was 7 823 hours, and the error between the calculation method of RV reducer service life and the test results was less than 10%, which verified the accuracy of the theoretical calculation method. Service life serves as a critical criterion for evaluating the reliability of RV reducers. This calculation method provides a theoretical basis for reducing test costs, saving production time, and guiding the design of RV mechanisms.

Key words

RV reducer / service life / eccentric shaft bearing / eccentricity

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LI Sen, WEI Tengyue, LI Yiwan, ZHANG Kai. Comprehensive Service Life Evaluation Methods for RV Reducers under Different Eccentricities[J]. Packaging Engineering. 2026, 47(3): 189-197 https://doi.org/10.19554/j.cnki.1001-3563.2026.03.020

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