The Kerk Spline Shaft(SS) series spline shaft system has been designed for light to moderate load applications, where low cost, low friction, and long life are primary design considerations.

Kerk Spline Shafts provide anti-rotation for one axis motion or a drive mechanism with rotation for two axes of motion. They are excellent alternatives for applications where hex shafts, square shafts and high cost ball splines are typically used.

The assembly consists of a stainless steel spline shaft treated with Kerk’s proprietary low friction Kerkote® TFE coating, mated with Kerkite® composite polymer bushing. The bushing is supplied with an integral brass collar to facilitate various mounting configurations without nut distortion.

Standard shaft straightness is .003" (.08mm/30cm) per foot. Typical radial and torsional clearance between shaft and bushing for a basic assembly (SSB) is .002" to .003" (.05-.08mm). An anti-backlash assembly (SSZ) is available for applications requiring minimum torsional play.

As with other Kerk assemblies, special bushing configurations and end machining configurations are available upon request. Aluminum or carbon steel spline shafts are also available upon request.