| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling device having excellent rolling life even under a corrosive environment or an environment required for nonmagnetism. SOLUTION: In a deep groove ball bearing provided with an inner ring 1, an outer ring 2, and a plurality of rolling bodies 3 rotatably disposed between the inner ring 1 and the outer ring 2, the inner and outer rings 1, 2 are constituted ofβtype orα+βtype titanium alloy of 200μm or finer in average particle size ofβphase crystalline granule and the surface hardness is made to be Hv400 or larger.
|
