THK Co., Ltd. HSR20LC1SS(GK) Linear Motion Guide Block Assembly

The THK HSR20LC1SS(GK) Linear Guide Block is a long-flange, precision recirculating-ball carriage for THK HSR20-series rails, delivering high rigidity and increased moment capacity through its long carriage and four-way equal-load design. It features SS end and side seals for enhanced protection against dust and contaminants and is part of THK’s GK interchangeable family, enabling easy replacement without sacrificing accuracy. Commonly used in CNC machines, robotic positioning systems, semiconductor equipment, packaging machinery, and general factory automation, it is selected by maintenance teams, OEMs, and system integrators for repair, retrofit, expansion, and replacement. Key specifications include: block style LC; rail compatibility THK HSR20 (20 mm rail); overall height 30 mm; block width 63 mm; block length 90 mm; carriage height 26 mm; mounting dimensions 53 × 40 mm with M6 mounting thread; rail width 20 mm, rail height 18 mm, rail hole pitch 60 mm; basic dynamic load rating 23.9 kN; basic static load rating 35.8 kN; block weight approximately 0.47 kg; material hardened bearing steel; lubrication compatibility with grease or oil and a standard grease nipple B-M6F.