| 摘要 |
PROBLEM TO BE SOLVED: To provide a gear transmission capable of suppressing the deterioration of a tapered roller bearing arranged between a casing and a carrier.SOLUTION: A carrier 10 is supported on a casing 4 via a tapered roller bearing 2 in a gear wheel drive 100. The tapered roller bearing 2 comprises an inner race 46, an outer race 40, tapered rollers 42 and a retainer 44. The inner race 46 is mounted to a carrier 10. The outer race 40 is mounted to a casing 4. The tapered rollers 42 are positioned between the inner race 46 and the outer race 40. The outer peripheral surface of the inner race 46 and the inner peripheral surface of the outer race 40 are not provided with ribs that restrict the tapered rollers 42 from moving in a direction away from the central axis of the bearings. The end 44a where the diameter of the retainer 44 is the greatest comes into contact with the carrier 10 in the central axis direction of the bearing, and comes into contact with the casing 4 in a direction perpendicular to the central axis of the bearing. |
