THK HR2042 Carriage And Rail Linear Guide Assembly

The THK HR2042 Carriage & Rail 820 mm is a precision linear motion guide assembly for heavy-duty automation, delivering smooth, high-rigidity travel with an 820 mm linear travel specification. Part of THK’s HR (Ultra-Heavy Load Type) series, it uses a ball bearing LM guide block with a 20 mm class rail (2042 Series) and 4-Way Equal Load capability, with rail mounting that can be Bolt Fixed and mounting directions for Top Surface or Bottom Surface installation. A caged ball retainer and UU double end seals accompany a dynamic radial load rating of 17 kN, and lubrication options include grease or oil. The operating temperature range is -20°C to 80°C. This assembly is commonly used in CNC machine tools, industrial robots, semiconductor manufacturing equipment, packaging machinery, and automated production systems where high load capacity and precise positioning are essential. Typical applications include machining centers, CNC milling machines, robotic positioning systems, precision inspection equipment, semiconductor production machinery, and factory automation setups requiring an 820 mm travel with four-way load distribution. Common replacements include THK HR2042T Carriage & Rail Assembly, THK HR2042UU, and THK HSR20A.