THK Co., Ltd. HRW27-340L Linear Guide Ball Rail

The THK HRW27-340L Linear Guide Rail is a precision wide-profile ball rail designed to pair with THK HRW27 carriage blocks, delivering smooth, rigid, and highly accurate linear motion across a 340 mm rail length. Built as a standard ball-profile wide rail, it provides a low-profile design with high rigidity for demanding applications. It is commonly installed in CNC machine tools, robotic transfer systems, semiconductor processing equipment, packaging machinery, vision inspection systems, and other factory automation setups that require reliable, low-friction travel and precise positioning. Maintenance teams, OEM machine builders, and system integrators rely on this guide rail for equipment repairs, rail replacements, automation retrofits, and precision linear motion upgrades. Key specifications include: Rail size 27 mm, rail width 48 mm, rail height 13 mm, overall rail length 340 mm, mounting hole pitch 60 mm, end distance 20 mm, rail screw size M4.5, and a four-way equal load design. The rail is manufactured from hardened bearing steel (58–64 HRC) and supports grease or oil lubrication. Compatible bearing blocks include THK HRW27CA, HRW27CAM, HRW27CR, and HRW27CRM. Its combination of a low-profile form and high rigidity enables stable, low-friction operation with high positioning accuracy in compact, wide-profile applications.