THK Co., Ltd. HSR30B Linear Ball Bearing Block Slide

The THK HSR30B Linear Ball Bearing Block Slide is a precision recirculating-ball block for THK HSR30 rails, delivering high rigidity and accurate, low-friction motion in demanding, high-load linear systems. Featuring a four-way equal-load design and a bottom-mount flange (Block Type B), it supports loads from radial, reverse radial, and lateral directions with reliable positioning, and its specifications include a 30 mm rail size; block dimensions of 90 mm wide, 42 mm high, and 98 mm long; mounting hole spacing of 72 × 52 mm; rail mounting hole pitch of 80 mm; dynamic load rating of 40.5 kN; static load rating of 53.7 kN; block weight approximately 1.1 kg; rail weight approximately 4.8 kg/m; bearing-steel construction; and lubrication options of grease or oil. Manufactured by THK Ltd as part of the HSR Global Standard LM Guide series, it offers precision-ground raceways, an interchangeable design, high rigidity, low-friction operation, and high positioning accuracy for CNC milling machines, machining centers, automated assembly lines, pick-and-place systems, semiconductor equipment, medical devices, and other automation equipment. Maintenance teams, OEM machine builders, and system integrators use it for repair, retrofit, expansion, and replacement; common replacements include THK HSR30CB, HSR30HB, and HSR30LB.