THK 4HRT2042UUS504L Linear Guide Bearing System For Four Carriage Set On 504mm Rail

The THK 4HRT2042UUS504L is a four-block heavy-load linear guide assembly on a 504 mm precision rail delivering four-way equal load and high rigidity for reliable linear motion in demanding applications. It comprises four HR2042UU bearing blocks mounted on a 504 mm rail within THK’s HR heavy-load LM Guide family, featuring UU double-end seals for contamination protection and a four-way equal-load design that tolerates installation errors while preserving positioning accuracy. Key specifications include a dynamic load rating of 17.0 kN per block and a static load rating of 18.2 kN per block, with block dimensions of 20 mm in height, 26.3 mm in width, and 91.6 mm in length; lubrication compatible with grease or oil; rail mounting bolt-mounted from top or bottom; and operating temperature from -20°C to +80°C. Rail joint capability is supported. Applications span CNC machine tools, machining centers, gantry systems, industrial robots, precision manufacturing lines, and heavy-duty automation equipment, making it suitable for OEM installations, upgrades, repairs, and replacement of heavy-load LM guides. Alternate reference: YAH30090.