THK’s LM Guide NR X and NR CX SERIES represent a significant advancement in linear motion technology, specifically engineered to handle ultra-heavy loads with exceptional precision and reliability. These full ball type, radial configuration guides are designed for applications where high load capacity, rigidity, and durability are paramount. The series incorporates a unique raceway geometry that maximizes ball contact, distributing loads evenly across the rolling elements to withstand substantial radial forces while maintaining smooth, low-friction motion. Constructed from high-grade steel and subjected to THK’s proprietary heat treatment processes, these components exhibit superior wear resistance and long-term operational stability, even in harsh industrial environments.
Key technical features of the NR X and NR CX SERIES include their optimized ball circulation system, which ensures consistent lubrication and minimizes heat generation during high-speed or high-load operations. The guides are pre-loaded to eliminate backlash, providing high positional accuracy and repeatability essential for precision applications. Their sealed design incorporates advanced sealing technologies to prevent contamination from dust, chips, and other particulates, thereby extending service life and reducing maintenance requirements. Additionally, the series offers various accuracy grades and preload levels, allowing for customization to meet specific performance criteria.
Performance advantages are evident in their ability to support ultra-heavy loads without compromising on smoothness or precision. The radial type design ensures high rigidity and moment load capacity, making them ideal for applications subjected to significant side forces or overturning moments. Low friction coefficients contribute to energy efficiency, reducing operational costs and heat buildup. The guides’ robust construction and precision manufacturing result in quiet operation, minimal vibration, and enhanced system longevity, even under continuous heavy-duty use.
Typical applications span multiple industries, leveraging the series’ strengths in demanding environments. In industrial machinery, they are commonly used in heavy-duty CNC machining centers, large-scale transfer lines, and press feeding equipment where high load capacity and precision are critical. Within automotive systems, these guides find application in robotic welding arms, assembly line conveyors, and testing equipment that require reliable performance under repetitive heavy loads. For precision equipment, the NR X and NR CX SERIES are employed in semiconductor manufacturing apparatus, large coordinate measuring machines, and optical alignment systems where accuracy and stability under load are non-negotiable. Their versatility and robustness make them a preferred choice for engineers seeking to enhance the performance and reliability of machinery operating under extreme conditions.
| Model No. | Outer dimensions | Basic load rating | |||
| Radial | |||||
| Height M |
Width W |
Length L |
Dynamic rating C |
Static rating C0 |
|
| mm | mm | mm | kN | kN | |
31 |
72 |
82.8 |
37.1 |
68.1 |
|
38 |
90 |
98 |
54.7 |
98.1 |
|
44 |
100 |
109.5 |
72.4 |
124.6 |
|
52 |
120 |
138.2 |
110.2 |
197.6 |
|
63 |
140 |
163.3 |
141.9 |
250.2 |
|
75 |
170 |
186 |
208.7 |
351.7 |
|