THK Caged Ball LM Guide Global Standard

Image on this page only as Representative Image, Please check the specifications of each size for details

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. Each row of balls is placed at a contact angle of 45° so that the load ratings 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. In addition, the LM block can receive a well-balanced preload, increasing the rigidity in the four directions while maintaining a constant, low friction coefficient.

Four-Way Equal Load


Each row of balls is placed at a contact angle of 45° so that the load ratings 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 and smooth linear motion.

Global Standard Size


SHS is designed to have dimensions nearly equal to the Full-Ball LM Guide Model HSR, the de facto global standard with which THK pioneered the LM System.

Stainless Steel Type also Available


A special type whose LM block, LM rail, and balls are made of stainless steel is also available. This is applicable only to models 15 through 25.