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Linear Guide Element

Spline Shafts and Guide Rails deliver low-cost, low friction and long life for a variety of linear motion control applications. 

KERK® SS and SZ Spline shafts are available in stainless steel and can be coated with our proprietary Kerkote® TFE or Black Ice® coatings. Spline Shafts provide anti-rotation for one axis motion or a drive mechanism with rotation for two axes of motion. The bushing is supplied with an integral brass collar to facilitate various mounting configurations without nut distortion.

KERK GR Guide Rail is the perfect choice for light load applications requiring minimal frictional drag, low cost and long wear. It features a burnished, centerless ground stainless steel shaft (available either uncoated or with Kerkote® TFE for additional lubricity) and a graphite and PTFE-filled thermoplastic bushing.

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Performance Attributes

Series Description Sizes Diameter MaxStroke Motorized  Rail Only  Guide Only Stiffness Major Attribute
Units  mm  m  
SS Spline shaft  with polymer bushing 2, 4, 6, 8, 12 3.2 - 19 0.45 - 3

X **** Low friction, Long life
SZ Spline shaft  with polymer bushing 2, 4, 6, 8, 12 3.2 - 19 0.45 - 3  
X **** Anti-Backlash
GR Guide rod with polymer bushing 4, 6, 8, 12 6.3 - 19 0.9 - 3  
X **** Low friction, Long life