| 摘要 |
A deep-grooved ball bearing (1) including a rolling contact member formed of a sintered ²-sialon inexpensive and capable of reliably ensuring sufficient durability includes an outer ring (11) and an inner ring (12), and a plurality of balls (13) arranged in contact with the outer ring (11) and the inner ring (12) on an annular raceway. The ball (13) is configured of a sintered body that contains as a main component a ²-sialon represented by a compositional formula of Si 6-Z Al Z O Z N 8-Z and satisfying 0.1 ‰¤ z ‰¤ 3.5 and has a remainder formed of an impurity. |
