THK HSR25B2UU1240L-II Linear Guide Rail Assembly

The THK HSR25B2UU1240L-II Linear Guide Rail Assembly is a complete precision linear motion system featuring a 1,240 mm HSR25 rail and two HSR25B flange-type recirculating ball guide blocks with UU double end seals. Built with THK's four-way equal load technology, it delivers high rigidity, smooth travel, and precise positioning for heavy-duty industrial applications. Key specs include a 25 mm rail size, 1,240 mm rail length, 23 mm rail width, 22 mm rail height, and 60 mm standard mounting hole pitch, with 2 × HSR25BUU blocks (flange type, mounting from below, block style B); load ratings of approximately 27.6 kN dynamic and 36.4 kN static; material is hardened bearing steel; lubrication is grease or oil compatible. This factory-assembled assembly simplifies installation while maintaining precise movement and long service life, offering four-way load capability in radial, reverse radial, and lateral directions. Common applications span CNC machining centers, automated manufacturing systems, robotic positioning equipment, semiconductor processing machines, inspection systems, packaging equipment, and medical devices, making it a suitable choice for maintenance teams, OEM machine builders, and system integrators performing repair, retrofit, expansion, or replacement.