Tuesday, April 24, 2018
Publication Date: 07/1/2007
Archive >  July 2007 Issue >  New Products > 

Kerk Motion Updates ScrewRail Drive Product
Improved Screwrail motion control.
Hollis, NH — Kerk Motion Products has updated the ScrewRail®, which combines drive and support/guidance components in a single, compact, coaxial design to save space and reduce cost. The company's patented ScrewRail is currently being used in applications for a number of industries, including medical, data storage, semiconductor, industrial machinery, printing/plotting and general automation.

By eliminating the need for external rail-to-screw alignment, the ScrewRail simplifies the design, manufacturing and assembly of motion systems. According to the company, the ScrewRail's coaxial design saves as much as 80 percent of the space used by a two-rail system. The ScrewRail reduces cost because it is less expensive than purchasing the equivalent components separately; it contains lower-cost support components; and it dramatically reduces labor content. The product comprises a precision rolled lead screw, supported by sealed bearings and contained within a concentric steel guide rail, that drives an integrated nut/bushing. Because all alignment requirements are achieved within the ScrewRail, support and positioning is much less critical than with traditional slide assemblies. TFE® coating and self-lubricating nut/bushing materials ensure long life without maintenance. The ScrewRail has recently been upgraded with a metal-reinforced bushing, providing increased strength and stability.

The product is unusual in that a single coaxial system enables three-dimensional motion. When mounted vertically, the ScrewRail can be used to simultaneously lift and rotate (Z-theta motion). A compact, self-supporting pick and place mechanism can be built with one motor driving the screw and a second rotating the rail. The ScrewRail is available in outside diameters of 0.5, 0.75 and 1-in., with leads ranging from 0.050 to 1.5-in., and can be manufactured in lengths up to 10 feet. Depending on the

configuration, ScrewRails are able to support loads up to several hundred pounds.

For more information, contact: Kerk Motion Products, Inc., 1 Kerk Drive, Hollis, NH 03049 603-465-7227 fax: 603-465-3598 Web:

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