| 摘要 |
PROBLEM TO BE SOLVED: To shorten a run-in operation time. SOLUTION: A tapered roller bearing comprises an outer ring 1 having a tapered raceway surface 1a; an inner ring 2 having a tapered raceway surface 2a and a small flange surface 2b on the small side of the raceway surface 2a and a large flange surface 2c on the large side; a plurality of tapered rollers 3 arranged in a rolling state between the orbit surface 1a of the outer ring 1 and the raceway surface 2a of the inner ring 2; and a cage 4 holding the tapered rollers 3 at intervals of a given distance in a peripheral direction. The tapered roller is coated with rust-proofing lubrication oil, having dynamic viscosity of 120 cst or more at 20 deg.C during delivery. |
