RG Series

Brand: Uhing (made in Germany)

The RG series of Rolling Ring Drives are the original aluminum bodied traversal units. They are friction drives which convert the constant rotation of a plain round shaft into reciprocating motion. A unique technology first invented by Uhing from Germany, widely used in the Wire and Cable Winding industry.

They operate like nuts on a threaded bar, however the pitch both left and right-hand is capable of fine adjustment or set to zero.

This effect is achieved by using ball bearing based Rolling Rings which are designed to pivot about the shaft, their specially crowned running surfaces being pressed against the shaft as it rotates. High quality product made in Germany by Uhing.

Main advantages of the Uhing Rolling Ring Principle:

automatic reciprocating motion*
variable adjustment of traverse speed up to 4.2 m/sec max, also different from both directions *
variable adjustment of traverse length
high dynamics at the reversal points
low operating costs

*at constant speed and direction of shaft rotation

Specifications Order Information

Model Number	For use with shaft dia. (mm)	Side Thrust (N)	Max. Pitch Per Rev. (mm)	Weight (kg)
RG3-15-2MCRF	15	110	11.4	0.71
RG4-15-2MCRF	15	220	11.4	0.86
RG3-20-2MCRF	20	160	15.9	1.33
RG4-20-2MCRF	20	320	15.7	1.53
RG3-22-2MCRF	22	160	17.2	1.33
RG4-22-2MCRF	22	320	17.0	1.53
RG3-30-2MCRF	30	260/400	26	2.70
RG4-30-2MCRF	30	520	26	3.20
RG3-40-2MCRF	40	420	33	4.40
RG4-40-2MCRF	40	840	33	5.30
RG3-50-2MCR	50	700	41	9.80
RG4-50-0MCR	50	1400	41	11.1
RG3-60-0MCR	60	1000	49	17.0
RG4-60-0MCR	60	2000	49	19.6
RG3-80-0MCR	80	1800	76	27.0
RG4-80-0MCR	80	3600	76	32.0

Indicate the model number of the Rolling Ring Drives in the above table.

Each model represents only one Traversal Drive, with no shaft, bracket and no motor.

*It is necessary for us to know what is the ‘Direction of Shaft Rotation’ you require* Download the file here for clarification.

An alternative is the ARG sub-assembly, by adding an ‘A’ in front of the model number, it indicates your would like the configuration as per image below.

Shaft and bracket included, motor is optional.

The following fields are required for us to quote an ARG:

RG Rolling Ring Drive model number: refer to specs table
Maximum desired traverse distance: in mm
Position of shaft extension: Left or Right
Length of shaft extension: in mm
Direction of shaft rotation: Left or Right
Motor (optional): your specs