The Kerk LR Series linear rail system has been designed for light load applications where low cost, minimum frictional drag and long wear life are primary design considerations.

The assembly consists of a centerless ground and burnished stainless steel shaftmated with a graphite and Kerkite® composite polymer bushing. The material combinations have been selected so that thermal fluctuations have minimal effect on system performance. Additional lubricity and extended life can be obtained by using Kerk's low friction Kerkote® TFE coating on support shafts available in both stainless and alloy steel.

Standard shaft straightness is .002" (0.05mm) per foot and typical radial clearance between shaft and bushing is .0005" (.013mm) on non-coated assemblies and .001" (.025mm) on TFE coated assemblies.

Bushings are manufactured with standard retaining ring grooves.