THK HSR25B2UU1240L-II Linear Guide Rail Assembly

Description:

The THK HSR25B2UU1240L-II Linear Guide Rail Assembly is a complete precision linear motion system consisting of a 1,240 mm HSR25 guide rail and two HSR25B flange-type recirculating ball linear guide blocks with UU double end seals. Designed with THK's four-way equal load technology, this assembly provides high rigidity, smooth linear travel, and excellent positioning accuracy for heavy-duty industrial applications. Commonly installed in CNC machine tools, industrial robots, semiconductor equipment, packaging machinery, and factory automation systems, this linear guide assembly is used by maintenance teams, OEM machine builders, and system integrators for equipment repair, retrofit, expansion, and replacement.

Applications:

The THK HSR25B2UU1240L-II Linear Guide Rail Assembly is widely used in CNC machining centers, automated manufacturing systems, robotic positioning equipment, semiconductor processing machines, inspection systems, packaging equipment, medical devices, and other precision linear motion applications requiring high load capacity, smooth operation, and long-term reliability. The factory-assembled rail and dual guide blocks simplify installation while maintaining precise linear movement.

Technical Specifications:

• Manufacturer: THK Ltd.
• Brand: THK
• Manufacturer Part Number: HSR25B2UU1240L-II
• Product Type: Linear Guide Rail Assembly
• Series: HSR Full-Ball LM Guide
• Rail Size: 25 mm
• Rail Length: 1240 mm
• Guide Blocks Included: 2 × HSR25BUU Linear Guide Blocks
• Block Style: B (Flange Type, Mounting from Below)
• Seal Type: UU (Double End Seals)
• Rail Width: 23 mm
• Rail Height: 22 mm
• Standard Rail Mounting Hole Pitch: 60 mm
• Guide Type: Precision Recirculating Ball Linear Guide
• Load Direction: Four-way equal load (radial, reverse radial, and lateral)
• Basic Dynamic Load Rating: Approximately 27.6 kN
• Basic Static Load Rating: Approximately 36.4 kN
• Material: Hardened Bearing Steel
• Lubrication: Grease or Oil Compatible
• Features: High rigidity, self-aligning capability, low friction, high positioning accuracy, precision-ground raceways, long service life, and interchangeable Global Standard design.

Common Replacements:

• THK HSR25B2SS1240L-II
• THK HSR25HB2UU1240L-II
• THK SHS25B2UU1240L-II