THK HRW21-CA Linear Carriage And Guide Rail Assembly

The THK HRW21-CA Linear Carriage and Guide Rail delivers precise, rigid, and smooth linear motion in a compact wide-rail package, with an HRW21CA flanged bearing block mounted on a 280 mm guide rail. The 37 mm-wide rail uses bolt-fixed through-hole mounting and can be oriented top or bottom, supporting four-way equal load for versatile installation in CNC machines and other automation equipment. Constructed from hardened bearing steel with precision-ground raceways, this ball-type wide-rail LM guide offers a low-profile design, high rigidity, self-aligning capability, smooth operation, and high positioning accuracy, and it is compatible with grease or oil lubrication and UU double-end seals, operating from -20°C to 80°C. Typical applications include CNC machining centers, robotics, semiconductor equipment, medical devices, packaging systems, vision inspection equipment, and laboratory or factory automation setups, and it is commonly used by maintenance teams, OEM builders, and system integrators for repairs, automation retrofits, or precision motion upgrades. Common replacements include THK HRW21CAM, HRW21CR, and HRW21CRM.