THK SR30SB1SS Linear Guide Block Bearing

The THK SR30SB1SS Linear Guide Block Bearing is a radial-type, full-ball linear motion block designed for THK SR30 rails, delivering high rigidity and smooth, low-friction travel for precision industrial applications. The compact SB flange version (SR30SB) mates with SR30 guide rails, while the longer TB flange version (SR30TB) provides increased bearing length for enhanced load distribution and rigidity, with compatibility to the GK Series SR30 guide rails. Common in CNC machine tools, semiconductor equipment, industrial automation, packaging machinery, robotic systems, and precision material handling, maintenance teams and system integrators use it for OEM replacements, machine repairs, retrofit projects, and new installations. Key specifications include Basic Dynamic Load Rating 29.5 kN and Basic Static Load Rating 34.4 kN (SB1SS), overall height 42 mm, width 90 mm, LM block length 40.4 mm (SB) or 69.3 mm (TB), LM block width 72 mm, mounting thread M8, grease nipple B-M6F, and seal configuration End + Side + Inner. It uses hardened bearing steel, supports grease or oil lubrication, and features a compact radial design with flange mounting for secure, high-precision operation; accuracy grades range Normal, H, P, SP, UP, and maximum standard rail length is up to 3000 mm (model dependent). Common replacements include THK SR30TB1SS (GK), SR30SBM (GK), and SHS30V.