Full-Ball LM Guide Wide-Rail Model HRW
This LM Guide model possesses a low center of gravity thanks to its large rail width and low overall height. As a result, it can be used as a single rail in places where a compact design or high rigidity against an applied moment is required.
Size : 12,14,17,21,27,35,50,60
Types
Highlight feature tags
- Flange
- Bolts mounted from above and below
- Bolts mounted from above
- Flange
- Bolts mounted from above and below
Basic load rating (kN): Basic dynamic load rating 5.53 to 80.3 / Basic static load rating 9.1 to 109
Size :
17,21,27,35,50,60
- Bolts mounted from above
Basic load rating (kN): Basic dynamic load rating 5.53 to 62.4 / Basic static load rating 9.1 to 86.3
Size :
17,21,27,35,50
- Bolts mounted from above
Basic load rating (kN): Basic dynamic load rating 3.29 to 5.38 / Basic static load rating 7.16 to 11.4
Size :
12,14
Features
Structure and Features
Balls roll in four rows of raceways precision-ground on an LM rail and an LM block, and endplates incorporated in the LM block allow the balls to circulate. Since retainer plates hold the balls, they do not fall off even if the LM rail is pulled out. (except models HRW 12 and 14LR). 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. In addition, the LM block can receive a well-balanced preload, increasing the rigidity in four directions while maintaining a constant, low friction coefficient. In a low center of gravity structure with a large rail width and a low overall height, this model can be used in places where space saving is required or high rigidity against a moment is required even in a single axis configuration.
Compact, Heavy Load
Since the number of effective balls is large, this model is highly rigid in all directions. It can adequately receive a moment even in a single rail configuration. Additionally, since the second moment of inertia of the rail is large, the rigidity in the lateral directions is also high. Accordingly, it does not need reinforcement such as a side support.
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.
Detailed information for each model number
Dimensional drawing/Dimensional table
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Save items for laterreview Favorites feature
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| Products | Contents |
|---|---|
| LM Guide | LM rail standard lengths and maximum length, tapped-hole type LM rail, frame for LM rail clamps, steel plate for LM rail clamps, etc. |
| Ball Screw | Axial clearance, maximum manufacturing length of shaft, etc. |
| Actuator | Movable part mass, etc. |
Standard Lengths and Maximum Lengths of LM Rails
THK Online Services
Member-Exclusive Content
These contents can be accessed
after registering as a member.
Benefit 1: Useful features
-
Easy product comparisonsHighlight feature
-
Save items for laterreview Favorites feature
Benefit 2: Exclusive content
| Products | Contents |
|---|---|
| LM Guide | LM rail standard lengths and maximum length, tapped-hole type LM rail, frame for LM rail clamps, steel plate for LM rail clamps, etc. |
| Ball Screw | Axial clearance, maximum manufacturing length of shaft, etc. |
| Actuator | Movable part mass, etc. |
