▎ 摘　　要

NOVELTY - Low friction force ball bearing, is claimed, where the ball surface has a graphene nickel-based composite coating having a thickness of 20-30 mu m. USE - Used as low friction force ball bearing. ADVANTAGE - The composite coating can makes the friction coefficient and reduces wear rate, and has low friction coefficient, and it has more excellent plating resistance than chromium under each load, and the wear rate is reduced by not less than 50% than a base.