The THK LM Guide Caged Ball LM Guide Wide Rail Model SHW SHW CRHR SERIES represents a significant advancement in linear motion technology, engineered to deliver unparalleled precision, rigidity, and longevity in demanding industrial environments. This series incorporates a unique caged ball design where precision steel balls are retained and guided by a polymer cage, effectively eliminating metal-to-metal contact between the balls. This innovation drastically reduces friction, heat generation, and the need for frequent lubrication, while simultaneously preventing torque fluctuations and ensuring exceptionally smooth, consistent motion. The wide rail configuration provides a larger mounting surface and a more substantial cross-section, resulting in a dramatically higher moment load capacity and superior resistance to overturning moments, vibration, and shock loads.
Key technical features define the performance envelope of the SHW CRHR series. The caged ball mechanism is central to its advantages, as it minimizes ball-to-ball friction and wear, leading to a substantial increase in operational life and maintaining high accuracy over extended periods. The wide rail design enhances system rigidity, which is critical for applications requiring high positional accuracy and repeatability. These guides are available with various preload options, allowing for precise tuning to match specific application requirements for stiffness and backlash elimination. Furthermore, the integrated seals and wipers are highly effective at excluding contaminants like dust, chips, and moisture, making the series exceptionally suitable for harsh operating conditions. The design also facilitates easier installation and maintenance, contributing to reduced machine downtime.
The performance advantages of the SHW CRHR series translate directly into tangible benefits for machinery and equipment. Its high rigidity and load capacity enable it to support heavy loads with minimal deflection, which is essential for maintaining precision under load. The low-friction, caged ball system ensures smooth, quiet, and low-vibration operation, contributing to higher quality finished products and a better working environment. The extended service life and reduced maintenance requirements significantly lower the total cost of ownership.
These characteristics make the THK SHW CRHR series ideal for a wide spectrum of demanding applications. In industrial machinery, it is extensively used in heavy-duty machining centers, grinding machines, and milling equipment where high cutting forces and precision are paramount. Within automotive manufacturing systems, these guides are found in high-speed transfer lines, robotic welding arms, and precision assembly stations that demand robustness and reliability. In the realm of precision equipment, the SHW CRHR is a critical component in semiconductor manufacturing apparatus, inspection and measurement machines, and medical imaging devices, where flawless, smooth motion and long-term accuracy are non-negotiable. Its robust design ensures dependable performance, enhancing productivity and reliability across these critical sectors.
| 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 | |
12 |
30 |
37 |
4.31 |
5.66 |
|
12 |
30 |
50.4 |
5.56 |
8.68 |
|
14 |
40 |
45.5 |
7.05 |
8.98 |
|
17 |
50 |
51 |
7.65 |
10.18 |
|
21 |
54 |
59 |
8.24 |
12.8 |
|
27 |
62 |
72.8 |
16 |
22.7 |
|
35 |
100 |
107 |
35.5 |
49.2 |
|
50 |
130 |
141 |
70.2 |
91.4 |
|