THK SHS LM guides use ball cage eliminates friction between balls, and achieves low noise, acceptable running sound, long-term maintenance-free operation, and superbly high speed response.
Balls roll in four rows of raceways precision-ground on an LM rail and an SHS LM block, and ball cages and endplates incorporated in the LM block allow the balls to circulate.
Types of THK SHS LM guides
- Model SHS-C
- The flange of THK SHS-C LM block has tapped holes. Can be mounted from the top or the bottom. Used in places where the table cannot have through holes for mounting bolts.
- Model SHS-V
- With this type, THK SHS-V LM block has a smaller width (W) and tapped holes. Used in places where the space for table width is limited.
- Model SHS-R
- THK SHS-R LM block has a smaller width (W) and the mounting holes are tapped. It succeeds the height dimension of full-ball type LM Guide HSR-R.
- Model SHS-LC
- THK SHS-LC LM block has the same cross-sectional shape as model SHS-C, but has a longer overall LM block length (L) and a greater rated load.
- Model SHS-LV
- THK SHS-LV LM block has the same cross-sectional shape as model SHS-V, but has a longer overall LM block length (L) and a greater rated load.
- Model SHS-LR
- THK SHS-LR LM block has the same cross-sectional shape as model SHS-R, but has a longer overall LM block length (L) and a greater rated load.
Structure of THK SHS LM guides
- 4-way Equal Load
- Each row of balls is placed at a contact angle of 45 degree so that the rated loads applied to THK SHS 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 through front-to-front configuration of THK’s unique circular-arc grooves (DF set) enables a mounting error to be absorbed even under a preload, thus to achieve highly accurate, smooth straight motion.
- Global Standard Size
- THK SHS is designed to have dimensions almost the same as that of Full Ball LM Guide model HSR, which THK as a pioneer of the linear motion system has developed and is practically a global standard size.
- Stainless Steel Type also Available
- A special type whose LM block, LM rail, and balls are made of stainless steel is also available. Applicable only to models 15 through 25.