THK Linear Motion System LM Guide

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LM Guide 3. Marking on the Master Rail and Combined Use 3-1 Marking on the Master LM Guide All LM rails mounted on the same plane are marked with the same serial number. The LM rail marked with "KB" after the serial number is the master LM rail. The LM block on the master LM rail has its reference surface finished to a designated precision,

  Guide, System, Master