Linear Drive / Rolling Ring

Rolling ring drives are friction drives which convert the constant rotary movement of a plain shaft into a traversing movement. They operate like nuts on a screw rod but have a pitch - either right-handed or left-handed - that can be precisely adjusted and can equal zero. This effect is achieved by using pivoted rolling rings that are mounted on roller bearings and have a specially shaped running surface which is pressed against the rotating shaft. A roller lever capable of making contact with cams arranged along the stroke path makes it possible to implement even complicated patters of motion.

The main advantages of the Uhing rolling ring principle are:

• highest possible efficiency due to the fact that the gear and the payload are completely supported by roller bearings
• automatic traversing movement
• variable traversing speeds ranging from 0 m/s to a maximum of 4.2 m/s; can also be separately set for the two directions with constant rotation of the shaft
• variable traversing width and traversing position
• high dynamics at the points of reversal
• can be released from the shaft
• low operating costs
• low maintenance requirements

Linear drive nut type RS

Uhing's linear drive nuts are non-positive drives which convert the rotation of a plain round shaft into a traversing movement. This effect is achieved by using rolling rings that are mounted on roller bearings and have a specially shaped running surface. These rings are pressed against the shaft so that they roll on the surface of the shaft at a specific angle.

Characterstics:

• Backlash-free
• low noise emission
• high efficiency due to rolling on the shaft
• travel and guide units
• can be freely moved on the shaft by using a release lever
• compact design
• installation does not require much space
• overload protection by slipping, side thrust can be multiplied by coupling several linear drive nuts
• different pitch settings available
• pitch can be set for either direction on the shaft
• good sealing properties against dust, dirt, humidity, etc.

Wherever linear movements are required, the linear drive nuts are a state-of-the-art alternative to hydraulic and pneumatic actuators, chain feeding systems and lead screws.

 Catalogue RS

Sizes	F max N	Max kg	a	b	c
RS3-10-4	100	0,14	47	35	35
RS4-10-4*	200	0,18	55	35	35
RS4-15-4	260	0,23	62	40	40
RS4-20-4	420	0,55	83	52	52
RS4-25-4	600	0,70	85	60	60
RS4-35-4	900	1,55	105	80	80
RS4-50-3*	1300	2,70	120	100	100
RS4-60-3*	2000	4,20	130	120	120
* On request