THK Caged Ball LM Guide Wide Rail

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Balls roll in four rows of raceways precision-ground on the LM rail and LM block and are circulated by ball cages and end plates incorporated in the LM block.
A wide and highly rigid LM Guide that uses ball cages to achieve low noise, long-term maintenance-free operation, and high speed.

Wide with a Low Center of Gravity


The Model SHW, which has a wide LM rail and a low center of gravity, is optimal for locations requiring compactness a and large MC moment rigidity.

Four-Way Equal Load


Each row of balls is placed at a contact angle of 45° so that the rated loads applied to the LM block are uniform in the four directions (radial, reverse-radial, and lateral directions), enabling the LM Guide to be used in all orientations and in extensive applications.

Self-Adjustment Capability


The self-adjustment capability of the front-to-front configuration of THK’s unique circular-arc grooves (DF set) enables mounting error to be absorbed even under a preload, thus achieving highly accurate, smooth linear motion.

Low Dust Generation


Use of ball cages eliminates friction between balls and retains lubricant, thus achieving low dust generation.