JKSPE

Improved Formulation for Sliding Friction Torque of Deep Groove Ball Bearings
볼베어링의 미끄럼 마찰토크 예측 방법 개발

홍성욱/금오공과대학교

Sliding friction torque (Msl) in deep groove ball bearings has been investigated with detailed sliding friction components: Spinning friction torque (Ms), differential sliding friction torque due to ball rotation (Mr), and differential sliding friction torque due to ball orbital motion (Md).
An efficient and accurate computational method was proposed for the estimation of sliding friction torque components based on locating pure rolling lines (PRLs) between the ball and races - updated c-value method.
This paper presents a comparison of the proposed model with other existing methods and with empirical formulae provided by a bearing company subjected to several loading and speed conditions.
This study reveals the advantageous usage of the updated c-value method for estimating sliding friction torque. The proposed method can also be applied to angular contact ball bearings.