THK SHW27-640L(GK) Linear Motion Guide Rail

The THK SHW27-640L(GK) Linear Motion Guide Rail is a 640 mm, wide-profile 27 mm rail designed for use with SHW27 caged ball carriage blocks, delivering precise, smooth linear motion. With four-way equal load capability, high moment rigidity, and a low-profile, wide-rail design, it suits CNC machine tools, semiconductor equipment, industrial robots, packaging machinery, and precision inspection systems where high positioning accuracy and long service life matter, and maintenance teams or system integrators frequently rely on it for repair, OEM replacement, and retrofit projects. Key specifications include hardened bearing steel (58–64 HRC), counterbored bolt mounting, standard rail length 640 mm, rail width 27 mm, standard hole pitch 60 mm, end distance 20 mm, and compatibility with SHW27CA/SHW27CR blocks; lubrication options include grease or oil with THK QZ Lubricator, with optional corrosion-protection surface treatments and a maximum standard rail length up to 3000 mm depending on model.