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Series 121 (With End Shaft Support Blocks) Two Pillow Blocks

GBV Ball Rail

Composed of precise hardened steel forming V-shaped rail guides to create linear motion elements with high accuracy. Limited stroke linear motion system with high rigidity, high load, and fast moment.


  • Suited for micro-movement applications due to small amount of frictional resistance, with almost no difference between starting friction resistance and dynamic friction resistance.
  • Stability in low speed applications: Even in the case of light loading, low to high speed variations are stable due to the low amount of frictional resistance.
  • High rigidity - high loading capacity applications:
  • Low noise: Nook linear motion cross ball rail has no circulated rotating, no noise occurred. Using ball with ball retainer makes no noise caused by contact friction in between each rolling unit moves alternately, to ensure a quiet movement motion.

Part numbers include two sets of rails.

Product Info Performance Specifications
Product Nominal Shaft Diameter [in] Pillow Block End Support Load Maximum/Block [lbf]
PowerTrax 121-06-SXX 0.38 XEP-6 NSB-6 68 Specs Configure/Quote
PowerTrax 121-08-SXX 0.50 XEP-8 NSB-8 175 Specs Configure/Quote
PowerTrax 121-12-SXX 0.75 XEP-12 NSB-12 406 Specs Configure/Quote
PowerTrax 121-16-SXX 1.00 XEP-16 NSB-16 725 Specs Configure/Quote
PowerTrax 121-24-SXX 1.50 XEP-24 NSB-24 1376 Specs Configure/Quote