THK SR20-280L LM Guide Linear Bearing Assembly

Description:

The THK SR20-280L LM Guide Linear Bearing Assembly is a precision linear motion system consisting of an SR20 radial-type linear guide rail measuring 280 mm in length with a compatible SR20 bearing block. It is designed to deliver smooth, low-friction, and high-rigidity linear movement for precision industrial automation and machine applications. Commonly installed in CNC machine tools, semiconductor equipment, packaging machinery, robotics, inspection systems, and automated production equipment. Maintenance teams and system integrators use this assembly for OEM replacement, machine repair, retrofit projects, and new linear motion installations.

Applications:

The THK SR20-280L linear guide assembly is engineered for medium-duty precision motion applications requiring accurate positioning, excellent rigidity, and long service life. Its compact radial guide design is ideal for factory automation equipment, electronic assembly systems, laboratory instruments, vision inspection machines, medical equipment, material handling systems, and other machinery requiring dependable linear guidance.

Technical Specifications:

• Manufacturer: THK
• Product Type: Linear Motion Guide Assembly
• Model: SR20-280L
• Series: SR20 Full-Ball LM Guide
• Guide Type: Radial Type Linear Motion Guide
• Rail Width: 20 mm
• Rail Length: 280 mm
• Compatible Bearing Block: THK SR20 Series (SR20V, SR20W, SR20SB, SR20TB)
• Bearing Design: Full Ball
• Rail Material: Hardened Alloy Steel
• Rail Mounting Hole Pitch: Standard SR20 Configuration
• Rail Mounting Accuracy: Precision Ground
• Lubrication: Grease or Oil Lubrication
• Accuracy Grades: Normal, H, P, SP, UP
• Operating Temperature: -15°C to 80°C
• Features: Four-row ball raceway design, high rigidity, low-friction operation, self-adjusting capability, high positioning accuracy, low noise, excellent wear resistance, compact profile, and long service life.

Common Replacements:

• THK SR20-360L LM Guide Assembly
• THK SR20-440L LM Guide Assembly
• THK HSR20-280L LM Guide Assembly