Straight-Curved Guide Model HMG SERIES

The THK LM Guide HMG SERIES represents a significant advancement in linear motion technology, specifically engineered as a full ball type straight and curved guide system. This innovative design integrates seamlessly curved and straight sections into a single, continuous guide rail, enabling smooth and precise motion transitions without the need for complex mechanical linkages or separate components. The HMG SERIES utilizes a full ball recirculation system, where balls circulate through both load-bearing and return paths within the guide block, ensuring consistent contact and minimal friction across straight and curved trajectories. Key technical features include a compact, low-profile structure that saves space in machinery layouts, high rigidity achieved through optimized rail and block geometries, and precision-ground raceways that maintain accuracy even under varying loads. The guide is available in multiple sizes and curvature radii, allowing customization for specific path requirements, and it supports pre-load options to eliminate backlash and enhance positional stability.

Performance advantages of the HMG SERIES make it ideal for demanding applications. Its full ball design distributes loads evenly, resulting in high load capacity and long service life with reduced wear. The smooth transition between straight and curved sections minimizes vibration and noise, contributing to quieter operation and improved product quality in sensitive environments. With low friction coefficients, these guides offer high-speed capability and energy efficiency, reducing power consumption in automated systems. They also exhibit excellent resistance to shock and vibration, ensuring reliability in harsh industrial conditions. Maintenance is simplified due to the sealed design, which incorporates grease reservoirs and protective seals to exclude contaminants like dust and moisture, extending relubrication intervals and downtime.

Typical applications span various high-precision industries. In industrial machinery, the HMG SERIES is employed in automated assembly lines, where its curved guides facilitate part transfer between stations without re-gripping, enhancing throughput in electronics manufacturing or packaging systems. Automotive systems benefit from its use in robotic welding arms and painting robots, where smooth, curved motions improve accuracy and finish quality while withstanding high cycle rates. Precision equipment, such as semiconductor handling devices and medical diagnostic instruments, relies on these guides for their repeatability and minimal deflection, critical in processes like wafer inspection or sample analysis. Additionally, they are found in material handling equipment, where curved paths optimize space in warehouse automation, and in machine tools for complex contouring operations. By combining versatility with robust performance, the THK LM Guide HMG SERIES enables innovative machine designs that boost productivity and precision across diverse sectors.

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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
HMG 15A LM Guide
24
47
48
2.56
4.23
HMG 25A LM Guide
36
70
62.2
9.41
10.8
HMG 35A LM Guide
48
100
80.6
17.7
19
HMG 45A LM Guide
60
120
107.6
28.1
29.7
HMG 65A LM Guide
90
170
144.4
66.2
66.7