THK Co., Ltd. HSR25-220L(GK) Linear Guide Rail

The THK HSR25-220L(GK) Linear Guide Rail provides high-rigidity, four-way load-capable linear motion in a compact 25 mm form factor, designed to work with THK HSR25 GK-series guide blocks for interchangeable, precision performance. As part of THK's Global Standard GK series, it interchanges with HSR25A, HSR25CA, HSR25LA, HSR25LC, HSR25HA, and HSR25HC GK blocks while maintaining high positioning accuracy. Specifications include rail size 25 mm, length 220 mm, width 23 mm, height 22 mm, and a hardened alloy steel construction, with 60 mm mounting-hole pitch and counterbored through holes. Load direction is four-way equal load (radial, reverse radial, and lateral), supporting demanding applications with consistent stiffness. Lubrication is grease or oil compatible, and the rail uses standard carbon steel construction for corrosion resistance; country of origin is Japan. Common applications span CNC machine tools, automated manufacturing equipment, robotic systems, semiconductor production equipment, inspection machines, medical devices, packaging machinery, and precision positioning systems requiring accurate, low-friction motion and long service life. Typical users include maintenance teams, OEM machine builders, and system integrators for repair, retrofit, expansion, and replacement of existing equipment, with a design that allows interchangeability within the GK family while preserving accuracy.