THK HSR20A Linear Guide Block And Rail Assembly

THK HSR20A Linear Guide Block And Rail Assembly is a complete precision linear motion set that includes one 11-inch (280 mm) HSR20 guide rail and one HSR20A flange-type block. Built with THK's Four-Way Equal Load technology, it delivers smooth, high-rigidity, and highly accurate motion with equal loading in radial, reverse-radial, and lateral directions. The 11 in (280 mm) rail is 20 mm wide, pairing with a block that measures 30 mm high, 63 mm wide, and 74.3 mm long, with mounting dimensions of 53 × 40 mm, M6 thread, and a 60 mm rail-mount hole pitch; the assembly is constructed from hardened bearing steel and supports grease or oil lubrication. It offers a basic dynamic load rating of 21.8 kN and a basic static load rating of 31.5 kN, and uses a precision recirculating ball guide mechanism for low-friction, long-life operation. Commonly used in compact CNC machining centers, robotic positioning systems, semiconductor equipment, optical inspection machines, medical devices, automated assembly, and packaging machinery, it is well-suited for maintenance teams, OEM machine builders, and system integrators performing repair, retrofit, expansion, or replacement of precision linear motion systems.