THK Co., Ltd. SR20W Linear Motion Guide Block

Description:

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

Applications:

The THK SR20W Linear Motion Guide is engineered for medium-duty to heavy-duty precision motion applications requiring excellent rigidity, high moment load capacity, and accurate positioning. Its wide-body carriage design provides enhanced stability, making it suitable for factory automation equipment, pick-and-place machines, medical devices, optical inspection systems, laboratory automation, electronic assembly equipment, and material handling systems.

Technical Specifications:

• Manufacturer: THK
• Model: SR20W
• Product Type: Linear Motion Guide Block
• 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
• Rail Mounting Method: Bolt Fixed
• Lubrication: Grease or Oil Lubrication
• Standard Grease Nipple: B-M6F
• Minimum Operating Temperature: -15°C
• Maximum Operating Temperature: 80°C
• Material: Hardened Bearing Steel
• Features: Wide-body radial design, four-row equal-load ball raceway, high rigidity, high load and moment 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