THK HSR20-230L(GK) Precision Linear Guide Rail

The THK HSR20-230L(GK) Precision Linear Guide Rail is a 230 mm-long, 20 mm-wide rail from THK’s Global Standard GK series, designed for use with THK HSR20 carriages to deliver smooth, high-rigidity motion. It uses a four-way equal-load design and is compatible with THK HSR20C, HSR20LC, HSR20R, and HSR20LR bearing blocks, with an interchangeable fit to other GK components. Built from hardened bearing steel, this precision recirculating ball guide rail supports grease or oil lubrication and features M6 mounting holes with THK-standard hole spacing. The rail’s accuracy is Global Standard (Normal or Precision grades available), making it suitable for compact CNC machining centers, robotic positioning systems, semiconductor equipment, automated inspection machines, medical devices, packaging machinery, and other precision automation requiring low friction and high rigidity. Maintenance teams, OEM machine builders, and system integrators rely on this rail for equipment repair, retrofit, expansion, and replacement. Common replacements include THK HSR20R/HSR20C (230 mm) and SHS20 series.