FRICTION ROLLER TYPE SPEED CHANGE GEAR

摘要

A friction roller type speed change gear in which a first roller (1) and a second roller (2) centering about two shafts (1a, 1b) extending in parallel while being spaced apart from each other are arranged on the two shafts (1a, 1b) such that they do not abut each other, a third roller (3) and a fourth roller (4) abutting against both the first roller (1) and the second roller (2) are arranged between the first roller (1) and the second roller (2) oppositely to a line connecting the centers thereof, and a backup bearing (30) for regulating displacement of the third roller (3) and the fourth roller (4) by abutting against the third roller (3) and the fourth roller (4) is provided. In such a friction roller type speed change gear, position of the backup bearing is adjustable.