Roller bearing

摘要

A roller bearing capable of effectively restraining occurrence of smearing or the like is provided. A cylindrical roller bearing includes: an outer ring having an outer ring raceway surface; an inner ring having an inner ring raceway surface that faces the outer ring raceway surface; and a plurality of cylindrical rollers rollably disposed between the outer ring raceway surface and the inner ring raceway surface. The inner ring raceway surface of the inner ring is provided with a manganese phosphate coating, and a rolling contact surface of each cylindrical roller is provided with a diamond-like carbon coating.

主权项

1. A roller bearing, comprising:
a fixed ring having a fixed raceway surface; a rotary ring having a rotary raceway surface that faces the fixed raceway surface; and a plurality of rollers rollably disposed between the fixed raceway surface and the rotary raceway surface, wherein: two different films are separately applied on the rotatory raceway surface and a rolling contact surface of each of the rollers, respectively, and one of the two different films is a manganese phosphate coating and an other of the two different films is a diamond-like carbon coating.