Caged Ball LM Guide Super-Low Waving Model SPR
Model SPR achieves super-low waving comparable to hydrostatic guides. In addition, the deformation of the ball is minimized to achieve ultra-high rigidity that surpasses even roller guides.
Sizes : 15,20,25,30,35,45
Types
Highlight feature tags
- Ultra long block
- Bolts mounted from above
- Ultra long block
- Bolts mounted from above
Basic load rating (kN): Basic dynamic load rating 22.5 to 178 / Basic static load rating 58.2 to 434
Sizes :
15,20,25,30,35,45
Features
We achieve super-low waving and high rigidity through our unique technology.
Eight raceway grooves
Doubling the number of grooves halves the load on the balls and enables ultra-low waving on a nanoscopic scale.
Small-diameter balls
The increased number of load-bearing balls stabilizes support and reduces compression when under a load.
Ultra-long blocks
More balls can be incorporated, reducing each ball's individual load to achieve super-low waving and ultra-high rigidity.
Super-low waving
Model SPR and Model SPS have super-low waving performance breaks conventional standards.
They are proficient in nanometer-stroke applications.
Waving Evaluation
The product was installed on a single-axis table, and the vertical and horizontal displacement during operation was measured. SPR/SPS models have 1/10 the waving value compared to our conventional, standard LM Guide models (100 nm to 300 nm).
| Tested model | SPS25LR |
|---|---|
| Rail span | 250 mm |
| Block span | 250 mm |
| Measurement point | Upper 250 mm of the middle of the table |
| Measurement direction | Vertical and horizontal |
Ultra-high Rigidity
Model SPR and Model SPS achieve outstanding rigidity with small-diameter balls and ultra-long blocks.
They improve the precision of load-bearing strokes and provide stable motion.
Rigidity Comparison and Evaluation
When a force was applied to the product from above or below, and the resulting displacement was measured it achieved even higher rigidity than a roller guide.
Note: This test was in comparison with LM Guide units with C1 clearance.
Lineup
|
Each model |
Model No. |
||||||
| 15 | 20 | 25 | 30 | 35 | 45 | ||
| SPR | ○ | ○ | ○ | ○ | ○ | ○ | |
Effective on radial loads when force is applied perpendicular to the shaft. Suitable for the stroke of heavy machines.
Detailed information for each model number
Dimensional drawing/Dimensional table
THK Online Services
Member-Exclusive Content
These contents can be accessed
after registering as a member.
Benefit 1: Useful features
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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. |
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. |
