THK SR20W1SS (GK) LINEAR GUIDE BLOCK (LM BLOCK)

Description:

The THK SR20W1SS(GK) Linear Guide Block is a wide-type radial linear bearing carriage designed for THK SR20 LM guide rails, providing smooth, high-rigidity, and low-friction linear motion for precision industrial automation systems. Commonly installed in CNC machine tools, semiconductor manufacturing equipment, packaging machinery, robotics, optical inspection systems, and automated production equipment requiring stable and accurate linear guidance. Maintenance teams and system integrators use this guide block for OEM replacement, machine repair, retrofit projects, and new precision linear motion assemblies.

Applications:

The THK SR20W1SS(GK) is engineered for precision motion applications requiring increased stability and excellent resistance to radial and moment loads. Its wide-body four-row recirculating ball design makes it ideal for factory automation, electronic assembly equipment, medical devices, laboratory instruments, pick-and-place systems, material handling equipment, and precision positioning machinery where reliable, repeatable linear movement is essential.

Technical Specifications:

• Manufacturer: THK
• Part Number: SR20W1SS(GK)
• Product Type: Linear Guide Block (LM Block)
• Series: SR-W
• Guide Type: Radial Type Linear Motion Guide
• Block Style: Wide Type (W)
• Bearing Design: Four-Row Recirculating Ball Raceway
• Compatible Rail Width: 20 mm
• Overall Height: 28 mm
• Overall Width: 42 mm
• Overall Length: 66.2 mm
• Block Width (B): 32 mm
• Mounting Thread Size: M5 × 8 mm
• Basic Dynamic Load Rating: 19.2 kN
• Basic Static Load Rating: 28.6 kN
• Seal Configuration: SS (End Seal + Side Seal + Inner Seal)
• Material: Stainless Steel
• Lubrication: Grease or Oil Lubrication
• Operating Temperature: -20°C to 80°C
• Weight: Approximately 0.3 kg
• Features: Wide-body radial design, four-row equal-load ball raceway, high rigidity, excellent moment load capacity, corrosion-resistant stainless steel construction, high positioning accuracy, smooth low-friction operation, and long service life.

Common Replacements:

• THK SR20V1SS(GK) Linear Guide Block
• THK SR20TBSS Linear Guide Block
• THK SR20SBSS Linear Guide Block