Caged Roller LM Guide
The Caged Roller LM Guide is a roller guide that achieves low friction, smooth motion, and long-term maintenance-free operation by using a roller cage. In addition, rollers with optimized lengths and diameters have been utilized as the rolling elements in order to minimize elastic deformation and achieve ultra-high rigidity. Furthermore, the lines of rollers are placed at a contact angle of 45° so that the same rated load is applied in all (radial, reverse-radial, and horizontal) directions.
![](https://www.thk.com/jp/assets/images/products/lm_guide_caged_roller.png)
Types
Highlight feature tags
- Long-term maintenance free
- High rigidity
- Super-rigid
- Ultra-rigid
- High accuracy
- Heavy load
- Low-profile LM Guide
- Low friction
- 4-way equal load
- Wide
- Ultra-heavy load
![](https://www.thk.com/jp/assets/images/products/caged_roller_srg.png)
- Long-term maintenance free
- High rigidity
- Super-rigid
- Ultra-rigid
- High accuracy
- Heavy load
- Ultra-heavy load
- Ultra-heavy load
- Low friction
- 4-way equal load
Size : 15,20,25,30,35,45,55,65,85,100
![](https://www.thk.com/jp/assets/images/products/caged_roller_srn.png)
- Long-term maintenance free
- High rigidity
- Super-rigid
- Ultra-rigid
- High accuracy
- Heavy load
- Ultra-heavy load
- Ultra-heavy load
- Low-profile LM Guide
- Low friction
- 4-way equal load
Size : 35,45,55,65
![](https://www.thk.com/jp/assets/images/products/caged_roller_srw.png)
- Long-term maintenance free
- High rigidity
- Super-rigid
- Ultra-rigid
- High accuracy
- Heavy load
- Ultra-heavy load
- Ultra-heavy load
- Low-profile LM Guide
- Low friction
- 4-way equal load
- Wide
Size : 70,85,100,130,150
Features
Structure and Features of the Caged Roller LM Guide
![](https://www.thk.com/jp/assets/images/products/lm_guide_caged_roller_en_img_f01.jpg)
![](https://www.thk.com/jp/assets/images/products/lm_guide_caged_roller_en_img_f02.jpg)
Caged Roller LM Guide is a roller guide that achieves low-friction, smooth motion and long-term maintenance-free operation by using a roller cage. In addition, to ensure ultra-high rigidity, rollers with low elastic deformation are used as the rolling elements and the roller diameter and the roller length are optimized.Furthermore, the lines of rollers are placed at a contact angle of 45° so that the same rated load is applied in all (radial, reverse and lateral) directions.
Advantages of the Caged Roller Technology
- Evenly arranged rollers circulate in a way that limits the front-to-back and side-to-side movements of the rollers, preventing the rollers from skewing and minimizing rolling resistance fluctuations. The end result is smooth and stable motion.
- The absence of friction between rollers and the retention of lubrication in grease pockets enable long-term maintenance-free operation.
- The absence of friction between rollers achieves low heat generation and superbly high speed.
- The absence of roller-to-roller collision ensures low noise and acceptable running sound.
![](https://www.thk.com/jp/assets/images/products/lm_guide_caged_roller_en_img_f03.jpg)
![](https://www.thk.com/jp/assets/images/products/lm_guide_caged_roller_en_img_f04.jpg)
Smooth Motion
● Rolling Resistance Data
Evenly spaced and aligned rollers circulate, minimizing rolling resistance fluctuations and achieving smooth and stable motion.
![](https://www.thk.com/jp/assets/images/products/lm_guide_caged_roller_en_img_f05.jpg)
[Conditions]
- Feeding speed10mm/s
- Applied loadno load (one block)
![](https://www.thk.com/jp/assets/images/products/lm_guide_caged_roller_en_img_f06.jpg)
Long-term Maintenance-free Operation
● High-speed Durability Test Data
Use of a roller cage eliminates friction between rollers, minimizes heat generation and increases grease retention, thus to achieve long-term maintenance-free operation.
[Conditions]
- Model No.SRG45LC
- Magnitude of preloadclearance C0
- Speed180m/min
- Acceleration1.5G
- Stroke2300mm
- LubricationInitial lubrication only
(THKAFB-LF Grease)
![](https://www.thk.com/jp/assets/images/products/lm_guide_caged_roller_en_img_f07.jpg)
![](https://www.thk.com/jp/assets/images/products/lm_guide_caged_roller_en_img_f08.jpg)
Ultra-high Rigidity
● High Rigidity Evaluation Data
[Preload]
- SRGradial clearance C0
- Conventional typeradial clearance equivalent to C0
Radial rigidity
![](https://www.thk.com/jp/assets/images/products/lm_guide_caged_roller_en_img_f09.jpg)
![](https://www.thk.com/jp/assets/images/products/lm_guide_caged_roller_en_img_f10.jpg)
Reverse radial rigidity
![](https://www.thk.com/jp/assets/images/products/lm_guide_caged_roller_en_img_f11.jpg)
![](https://www.thk.com/jp/assets/images/products/lm_guide_caged_roller_en_img_f12.jpg)
Horizontal rigidity
![](https://www.thk.com/jp/assets/images/products/lm_guide_caged_roller_en_img_f13.jpg)
Rigidity is measured with the two axes placed in parallel and one of the axes not fixed with a bolt in order not to apply a moment.
![](https://www.thk.com/jp/assets/images/products/lm_guide_caged_roller_en_img_f14.jpg)