SR-M1W SERIES

THK’s LM Guide LM Guide (full ball type) High Temperature SR M1W SERIES represents a significant advancement in linear motion technology, engineered specifically for environments where elevated temperatures and demanding operational conditions are the norm. This series incorporates a full-ball type design, where the recirculating balls maintain continuous contact along the entire raceway, ensuring uniform load distribution and enhanced rigidity. The SR M1W is constructed from heat-resistant materials, including special steel for the rails and blocks, and high-temperature-resistant resins and seals, allowing it to operate reliably in temperatures up to 150°C. Key technical features include an optimized ball groove profile that minimizes friction and wear, even under high loads, and advanced sealing systems that prevent the ingress of contaminants like dust, chips, and moisture, which is critical in harsh industrial settings. The series also boasts a compact design, facilitating easy integration into space-constrained machinery without sacrificing performance.

Performance advantages of the SR M1W SERIES are substantial, starting with its exceptional durability and longevity under thermal stress. The full-ball configuration reduces vibration and noise, contributing to smoother motion and higher precision in positioning tasks. It offers low friction coefficients, which translate to reduced energy consumption and less heat generation during operation, further supporting its suitability for high-temperature applications. Maintenance requirements are minimized due to the robust sealing and corrosion-resistant treatments, leading to lower total cost of ownership over the system’s lifecycle. Additionally, the LM Guide provides high load capacity in all directions—radial, reverse-radial, and lateral—making it versatile for complex motion profiles. Its ability to maintain accuracy and stability, even with thermal expansion, ensures consistent performance in precision-driven processes.

Typical applications span various industries where reliability in heated or aggressive environments is paramount. In industrial machinery, the SR M1W SERIES is ideal for furnace door mechanisms, heat treatment equipment, and welding robots, where components are exposed to sustained high temperatures and particulate debris. Within automotive systems, it finds use in engine test benches, exhaust system handling robots, and paint-drying conveyor systems, where thermal resilience and contamination resistance are essential for uptime and safety. In precision equipment, this series supports semiconductor manufacturing tools, such as wafer handling arms in high-temperature chambers, and medical device autoclaves, where sterile, high-heat conditions demand unwavering accuracy. By combining thermal endurance with low-maintenance design, the THK SR M1W SERIES enables enhanced efficiency, reduced downtime, and improved product quality across these critical sectors, solidifying its role as a dependable solution for challenging linear motion needs.

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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
SR 15M1W LM Guide
24
34
57
13.8
20.5
SR 20M1W LM Guide
28
42
66.2
19.2
28.6
SR 25M1W LM Guide
33
48
83
30.9
44.7
SR 30M1W LM Guide
42
60
96.8
45.6
64.4
SR 35M1W LM Guide
48
70
111
60.4
81.8