NSK LW27UU Linear Guide Bearing Block Assembly

The NSK LW27UU Linear Guide Bearing Block Assembly is a wide-body block engineered for high-load, high-rigidity linear motion on NSK LW27 guide rails. It employs a four-row recirculating ball design with a DF arrangement and a 50° contact angle to deliver smooth travel, precise positioning, and strong moment-load resistance across demanding single-rail applications. The bearing is 80 mm wide, with a standard length of 74 mm and an overall length of 86.6 mm when fitted with the K1 lubrication unit, enabling compact yet stiff support for heavy automation tasks. Built for durability, it uses high carbon bearing steel (with optional stainless steel) and provides preload options of clearance or light preload, along with standard end and bottom seals; an optional NSK K1 lubrication unit supports maintenance-free operation. Its dynamic load rating is 12.8 kN, making it suitable for CNC machine tools, semiconductor equipment, industrial robots, packaging machinery, medical devices, and other automated manufacturing systems where high rigidity and accurate motion are required. Common replacements include NSK LW27EL and NH30/NS30 series. The design is commonly used by maintenance teams, OEM machine builders, and system integrators for repairs, retrofits, and replacement of worn linear guides.