Full-Ball LM Guide Separate Type Model HR
This is an LM Guide that is capable of receiving an equal load in all four directions with parallel installation of two rails. It has a low cross-sectional height and allows the clearance to be adjusted.
Sizes : 918,1123,1530,2042,2555,3065,3575,4085,50105,60125
Types
Highlight feature tags
- Long block LM Guide
- Bolts mounted from above and below
- Bolts mounted from above and below
Basic load rating (kN): Basic dynamic load rating 2.82 to 226 / Basic static load rating 3.48 to 232
Sizes :
918,1123,1530,2042,2555,3065,3575,4085,50105,60125
- Long block LM Guide
- Bolts mounted from above and below
Basic load rating (kN): Basic dynamic load rating 20.8 to 153 / Basic static load rating 24.3 to 161
Sizes :
2042,2555,3065,3575,4085,50105
Features
Structure and Features
Balls roll in two rows of raceways precision-ground on an LM rail and an LM block, and end plates incorporated in the LM block allow the balls to circulate. Each of the two rows of balls that circulate through the LM rail contact the raceway at a 45° angle. With this angular contact structure, installing one set (a combination of two LM rails and LM blocks on the same plane) on a flat surface allows the system to bear an equal load in all four directions (radial, reverse-radial, and horizontal directions). In addition, because the cross-sectional height is low, this linear motion guide configuration provides stability in a compact form. Clearance adjustments are relatively easy to perform, and the product is highly capable of absorbing mounting error.
Easy Installation
With Model HR, it is easier to adjust clearance and achieve accuracy than with cross-roller guides.
Self-Adjustment Capability
Even with poor parallelism or level between the two rails, the self-adjustment capability in the face-to-face configuration of THK’s unique circular-arc grooves (DF set) absorbs mounting error and achieves smooth linear motion, even under a preload.
Four-Way Equal Load
When the two rails are mounted in parallel, 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 various orientations.
Cross-Sectional Dimensions Approximate to Cross-Roller Guides
Since Model HR utilizes end caps for recirculation, it is not susceptible to the cage displacement that occurs in cross-roller guides. In addition, the cross-sectional shape of Model HR is similar to that of cross-roller guides, and the two product types are interchangeable.
Stainless Steel Type also Available
A special type whose LM block, LM rail, and balls are made of stainless steel is also available.
Example of Clearance Adjustment
Design the clearance adjustment bolt so that it presses the center of the side face of the LM block.
Comparable Cross-Roller Guide Model Numbers
Each type of LM Guide Model HR has cross-sectional dimensions approximate to that of the corresponding cross-roller guide model.
Detailed information for each model number
Toggle chart
- Model HR Heavy-Load Type
- Model HR-T Super-Heavy Load Type
