| 摘要 |
<p>PURPOSE:To facilitate the control of preload by engaging a cylinder which is driven with oil supplied from an oil passage to a shaft member and pressing an inner ring with a piston which is brought into contact with the inner ring of an angular bearing. CONSTITUTION:Taper roller bearings 17, 18, a cylinder 19, and an output gear 20 are fastened to an output shaft 10 with a lock nut 21, and a sealed space is formed inside the cylinder 19. When oil is filled in an oil passage 27 and an adjusting screw is fastened, oil pressure is applied to pistons 24, 24 of the cylinder 19. By the oil pressure, the piston 24 on the bearing 17 side presses an inner race 17b against a piston gear 12, and the piston 24 on bearing 18 side presses an inner race 18b against an outer gear 20 to apply preload taper roller bearings 17, 18. By adequately controlling the fastening of the adjusting screw 29, each preload value of the taper roller bearings 17, 18 can be adjusted.</p> |
