Angular adjustment device between cam shaft and cam shaft wheel - has first row of balls pressed axially and or radially into second row of balls by hydraulically moving piston between contact bearing faces

摘要

A first row of balls (16) and a second row of balls (18) are placed between the first bearing face on the shaft (1) and the second bearing face on the drive wheel (2). The second balls can be pressed by the hydraulically axially movable piston (11) axially and/or radially into the first row (16) so that the arc spacing between the first and second bearing faces can be changed within wide ranges. A hub unit (3) rotationally secured on the shaft by a screw (4) supports the track (15) for the first balls on its outer circumference and the drive wheel has a guide track (17) on its inner circumference for the second balls. The drive wheel is connected rotationally secured by several screws (9) to a ring unit (7) and cover unit (8). A ring cylinder (10) with ring piston (11) set in the cover unit acts on the second row of balls. ADVANTAGE - Space saving design allowing wide angular adjustment.