▎ 摘　　要

NOVELTY - The utility model claims a bicycle steel bowl structure without using grease, comprising a steel bowl seat, a steel ball, a steel ball clamp, an inner gear and a nanometer carbon ball solid lubricant, the steel ball in the steel ball clamp, steel ball clamped to ball distance separating function, a steel ball and a steel ball is clamped between the steel bowl seat and the inner gear, wherein said steel bowl seat, steel ball and the inner surface of the friction coating on nanometer carbon ball solid lubricant, the nanometer carbon ball solid lubricant is graphene and the nanometer carbon ball composite; The beneficial effects are as follows: coating the steel bowl seat, steel ball, inner surface of the nanometer carbon ball solid lubricant not only very hard, very small friction coefficient, surface lubrication and permanent lubrication, there is no volatilization and agglomeration, so it does not need lubricating grease.