Drive Nut Runs on Threadless Shaft - Eliminates Risk of Jamming, Enhances Clean Operation

November 2016, Aston PA - Amacoil-Uhing Model RS drive nuts provide smooth backlash-free linear motion in machine design. Unlike a screw, the RS drive nut runs on a smooth shaft. This eliminates the potential for debris to become trapped in threads which could then clog or jam. If material does fall onto the shaft, it is easily removed by wiping the shaft with a clean cloth. Should an object somehow become caught between the nut and the shaft bearing end support, the drive simply slips until the operator can remove the obstruction. Slipping, as opposed to the churning and grinding associated with screw-based systems, prevents damage to the nut and other components in the linear motion system which, in turn, reduces downtime for repairs and enables more consistent production rates.

Designers of automated machinery requiring a linear motion component will find RS drive nuts meet requirements for a variety of indexing and reciprocating linear motion applications. When integrated with sensing devices such as a linear scale, RS drive nuts provide high accuracy backlash-free linear motion in material handling machines, winding equipment, test and measurement devices, metrology machinery, packaging machines and other converting and finishing equipment.

Options include a stainless steel housing and shaft scrapers which wipe off the shaft while the nut moves. This enhances smooth, clean operation. Customers may also specify special sealing procedures for the RS nut housing as is sometimes desirable in food processing machinery to meet regulatory standards. RS nuts require no maintenance except periodic lubrication of the shaft with grease.

RS linear drive nuts offer axial thrust from 22 to 449 pounds. The drive operates on the rolling ring engineering principle which produces linear motion from a smooth, rotating shaft while assuring no play or backlash during movement of the drive nut. Available in ten sizes to meet varying payload and thrust requirements, the RS drive nut is suitable for vertical or horizontal travel. Each of the ten sizes is available in five different linear pitch settings. Shaft rotational speeds may be up to 10,000 rpm depending on the size of the drive. Linear travel speed ranges from 0.5 ft./sec. up to 4.0 ft./sec. depending on the size of the drive and also on the weight of the payload and the manner in which it is attached.

As the exclusive North American distributor for Uhing rolling ring linear drives, Amacoil provides product sales, technical support, service/repairs and parts. For more information please contact Amacoil, Inc., PO Box 2228, Aston PA 19014. Tel: 610-485-8300. Fax: 610-485-2357. email: Web:

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