A New Running Torque Formula for Tapered Roller Bearings Under Axial Load

Abstract

Conventional formula for calculating the running torque of tapered roller bearings often showed discrepancy from actual running torque, particularly under axial load. Therefore, an equation was formulated based on the knowledge of EHL rolling resistance and EHL oil film thickness. Careful examination of actual bearing running torque suggested the load dependency of EHL rolling resistance which previous theory did not include. Such load effect was confirmed by means of two disc machine and the equation was partly corrected. A new running torque formula of a tapered roller bearing under axial load was proposed and good agreement with actual bearing torque was confirmed.

Dynamic behaviour of rolling bearings: Simulations and experiments

“…A good set of experimental data for fully flooded conditions was published by Aihara [5,6]. Figure 2 shows the rolling friction as function of the non-dimensional load parameter M (line contact), according to Moes [2].…”

Theoretical and experimental investigation on the thermal characteristics of double-row tapered roller bearings of high speed locomotive

“…11.057 0017-9310/Ó 2014 Elsevier Ltd. All rights reserved. torque for tapered roller bearings also have been proposed by many researchers [4][5][6]. However, there are some application restricts for application of these formulae in a wide range of bearing operating conditions due to their different limitations [7].…”

Theoretical Calculation and Simulation Analysis of No-load Torque of Main Reducer

“…l e is effective roller resistance, m. Aihara and Zhou-Hoeprich [5,6] Based on these problems, H. Matsuyama and S. Kamamoto [4] have put forward an experimental equation which can be widely used. They firstly used the EHL theory to make the viscous rolling resistance dimensionless:…”

“…It can be seen from Figure.4 that due to the uneven distribution of pressure under the EHL effect, the theoretical calculation of viscous rolling resistance becomes very difficult and complex. Therefore, scholars have chosen to obtain the simplified equation of viscous rolling resistance or the whole friction torque by experiments [4][5][6][7].…”