Thk SR20W Linear Motion Guide Block Radial Type

Description:

The THK SR20W Linear Motion Guide Block is a wide radial-type linear bearing block designed for THK SR20 guide rails, providing smooth, high-rigidity, and high-load linear motion for precision industrial automation systems. Commonly installed in CNC machine tools, semiconductor equipment, packaging machinery, robotics, inspection systems, and factory automation equipment where increased moment load capacity and stable linear guidance are required. Maintenance teams and system integrators use this bearing block for OEM replacement, machine repair, retrofit projects, and new precision motion system installations.

Applications:

The THK SR20W is engineered for precision linear motion applications requiring greater mounting stability than compact guide blocks. Its wide-body design offers excellent resistance to moment loads while maintaining smooth, low-friction movement, making it ideal for electronic assembly equipment, optical inspection systems, medical devices, laboratory automation, material handling equipment, and precision positioning machinery.

Technical Specifications:

• Manufacturer: THK
• Product Type: Linear Motion Guide Block
• Model: SR20W
• Series: SR Full-Ball LM Guide
• Guide Type: Radial Type
• Block Style: Wide Type (W)
• Bearing Design: Four-Row Recirculating Ball Raceway
• Compatible Rail Size: SR20 (20 mm Rail Width)
• Overall Height (M): 28 mm
• Overall Width (W): 42 mm
• Overall Length (L): 66.2 mm
• Basic Dynamic Load Rating: 19.2 kN
• Basic Static Load Rating: 28.6 kN
• Standard Seal Options: None, UU, SS
• Preload Grades: Normal, C1 (Light), C0 (Medium)
• Accuracy Grades: Normal, H, P, SP, UP
• Lubrication: Grease or Oil Lubrication
• Grease Nipple: B-M6F (Standard)
• Material: Hardened Bearing Steel
• Operating Temperature: -15°C to 80°C
• Features: Wide-body radial design, four-row equal-load ball raceway, high rigidity, high moment load capacity, smooth low-friction operation, high positioning accuracy, excellent wear resistance, and long service life.

Common Replacements:

• THK SR20V Linear Motion Guide Block
• THK SR20TB Linear Motion Guide Block
• THK SR20SB Linear Motion Guide Block