THK HSR25YR1SS Linear Bearing Block for THK HSR Series

The THK HSR25YR1SS Linear Bearing Block is a precision recirculating-ball carriage designed for THK HSR25 guide rails, delivering smooth, accurate, high-rigidity motion with a four-way equal-load design in a compact narrow-profile block. It uses Top Mount with tapped holes and measures 40 mm tall, 48 mm wide, and 83.1 mm long, and it is compatible with THK HSR25 rails that have a 23 mm rail width. Rated for a basic dynamic load of 27.6 kN and a basic static load of 36.4 kN, this block provides equal-load support in all four directions and features self-adjusting capability and tight tolerance for high-precision positioning. Lubrication is grease or oil compatible, with a grease nipple specified as B-M6F, and it employs SS seals (end and side seals) in hardened bearing steel. Interchangeable with other HSR25 GK-series blocks and commonly used with THK HSR25R, HSR25RM, and HSR25XR variants. Common applications include CNC machine tools, robotic positioning systems, automated assembly equipment, semiconductor manufacturing machinery, precision inspection systems, packaging machines, medical equipment, and broader factory automation, with adoption by maintenance teams, OEM machine builders, and system integrators for repairs, retrofits, or replacement of worn linear motion components.