Full-Ball LM Guide Wide-Rail Model HRW
This LM Guide model possesses a low center of gravity thanks to its wide rail 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.
Sizes : 12,14,17,21,27,35,50,60
Types
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- 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
Sizes :
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
Sizes :
12,14
Features
Structure and Features
Balls roll in four 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. Since retainer plates hold the balls, they will not fall out even if the LM block is removed from the LM rail (except models HRW 12 and 14LR). 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 constantly low friction coefficient. The LM rail is wide and has a low center of gravity with a low overall height, so it can be used as a single axis in locations where space is limited or where high rigidity is required due to moment loads.
Compact with Large Load Capacity
Because of the large number of load-bearing balls, this model is highly rigid in all directions. The LM rail is wide and sufficient to receive a moment load even in a single-rail configuration. Additionally, since the secondary cross-sectional moment of inertia of the LM 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 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.
Detailed information for each model number
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- Models HRW-CA/CAM
- Models HRW-CR/CRM
- Model HRW-LRM
