THK Co., Ltd. 228605 Linear Motion Guide Block

THK HSR15 Linear Motion Guide Block (#228605) is a precision recirculating ball carriage designed to mate with THK HSR15 series guide rails, delivering high-rigidity, low-friction linear motion with Four-Way Equal Load and self-adjusting capability for uniform radial, reverse-radial, and lateral loads in any orientation. The standard narrow block (R Type) measures 28 mm in height, 34 mm wide, and 56.6 mm long, with a top-mounting style through tapped M4 x 5 mm holes, and it uses hardened bearing steel for durability. It supports basic dynamic load rating of 10.9 kN and basic static load rating of 15.7 kN, and it is compatible with grease or oil lubrication, featuring a PB1021B grease nipple for maintenance. This THK block is interchangeable with THK HSR15 rails and is commonly used in CNC machining centers, robotic positioning systems, semiconductor equipment, precision inspection machines, medical devices, packaging equipment, and factory automation systems requiring compact, high-precision, and reliable linear motion. It is a practical choice for maintenance teams, OEM machine builders, and system integrators performing equipment repair, retrofit, expansion, or replacement, and it has common replacements including THK HSR15R, HSR15RM, and SHS15R blocks.