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No.1019E 2023Special Edition on Automotive Technologies Development of Grease-lubricated High-speed Bearing

Category TECHNICAL REPORT
Author S. AKIMOTO
Engineering Planning Dept., Industrial and Bearing Business Unit
Abstract High-speed bearing rotation is required to make electric vehicle drive motors more efficient, smaller, and lighter. We have developed a resin cage with a novel shape that offers excellent centrifugal force resistance and lubrication performance, and that dramatically improved the high-speed performance of grease-lubricated bearings, achieving a dmn value of 1.85 million.
Keyword grease-lubricated, high-speed, bearing, cage, electric vehicle
Reference

2) Y. TANIGUCHI, T. UMENO: Development of Deep Groove Ball Bearings for High-speed Rotation, JTEKT ENGINEERING JOURNAL, No. 1015E (2018) 52.
4) Y. OOSHIMA, K. HASEGAWA, T. ONIZUKA: Development of Bearing Dynamics Analysis System, JTEKT ENGINEERING JOURNAL, No. 1017E (2020) 83.
5) JTEKT CORPORATION: High speed ball bearing for EV motors, CAT. NO. BA019EN-0MY.
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