Miniature Spline Shafts do not require external lubrication.

Press Release Summary:

Featuring .125 in. OD, SS 2 Spline Shaft series is designed for light- to moderate-load applications where low friction and extended life are critical considerations. Assembly consists of solid steel or aluminum spline shaft, treated with low-friction Kerkote® TFE coating, coupled with plain or thread-mount bushings. To adapt to any required format, custom machining of bushing and spline shaft is available.

Original Press Release:

Kerk Motion Products Introduces Its New SS 2 Miniature Spline Shaft Series

Designed for Light to Moderate Load Applications Kerk Motion Products, one of the world's premier manufacturers of non-ball lead screws, announces its new SS 2 Spline Shaft series. The Kerk® Spline Shaft SS 2 is the smallest spline shaft in the line, with an outside diameter of Ø.125" (3.18mm). The Spline Shaft series has been designed for light load applications, where low cost, low friction and long life are critical design considerations. This includes any application that requires a rotary drive with adjustable linear position or a linear guide with high torsional stability. Depending on the particular application, a Kerk Spline Shaft can offer a wide range of benefits. In an application currently using a ball spline, hex-, square- or D-shaft, it can provide a lower cost alternative without sacrificing positional accuracy. Because of its low-friction performance, it can allow a user to downsize certain process equipment, including motors, reducing heat buildup and energy requirements. Ultimately, its low friction performance will also contribute to longer product life. The assembly consists of a solid steel or aluminum spline shaft treated with Kerk's proprietary, low-friction Kerkote® TFE coating, coupled with plain or thread-mount bushings. The Kerkote® TFE coating eliminates the need for external lubrication and maintenance. Kerk's other spline shafts are available with any combination of the following standard features: basic or anti-backlash bushing, plain or thread mount bushing, and 1/4", 3/8", 1/2" or 3/4" diameter shaft. Custom machining of both the bushing and spline shaft is available for mounting considerations or to adapt to any required format. For more information on the Kerk Spline Shaft SS 2 please visit About Kerk Motion Products Established in 1976, Kerk Motion Products, Inc. is one of the world's largest exclusive manufacturers of non-ball lead screws. The company, headquartered in Hollis, NH, develops internationally patented, anti-backlash designs and materials that provide high accuracy, unsurpassed repeatability, and long life in a full range of motion control components, for all types of applications. The company's production facilities include its own injection molding and moldmaking, CNC machine tools, and a quality control department utilizing real-time SPC. For more information about Kerk Motion Products and its lines of lead screws, screw rails, and linear rails, contact Kerk Motion Products, Inc., 1 Kerk Drive, Hollis, NH 03049; Call 603-465-7227; Fax 603-465-3598. More information is available at

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