THK Co., Ltd. SR20 Linear Guide Bearing Block Carriage

Description:

The THK SR20 Linear Guide Bearing Block is a radial-type linear motion bearing block designed for SR20 guide rails, providing smooth, accurate, and low-friction linear motion for compact industrial automation systems. Commonly installed in CNC machinery, semiconductor equipment, packaging machines, robotics, electronic assembly equipment, and precision positioning systems requiring reliable linear guidance. Maintenance teams and system integrators use this bearing block for OEM replacement, machine repair, retrofit projects, and the construction of high-precision linear motion assemblies.

Applications:

The THK SR20 Linear Guide Bearing Block is engineered for medium-duty precision motion applications where high rigidity, smooth travel, and long service life are essential. Its compact design makes it suitable for automated production equipment, laboratory automation, optical inspection systems, pick-and-place machines, medical devices, and material handling systems that require accurate linear positioning and dependable performance.

Technical Specifications:

• Manufacturer: THK
• Product Type: Linear Motion Guide Bearing Block
• Series: SR20 Full-Ball LM Guide
• Guide Type: Radial Type Linear Motion Guide
• Compatible Rail Size: SR20
• Bearing Design: Full Ball
• Block Dimensions: 59 × 28 mm
• Overall Width (W): 59 mm
• Overall Height (M): 28 mm
• Overall Length (L): 47.3 mm
• LM Block Width (B): 49 mm
• LM Block Length (L1): 27.8 mm
• Rail Width: 20 mm (THK SR20 standard)
• Mounting Thread: M5 × 8
• Grease Nipple: B-M6F
• Lubrication: Grease or Oil Lubrication
• Preload Options: Normal, C1 (Light Preload), C0 (Medium Preload)
• Accuracy Grades: Normal, H, P, SP, UP
• Material: Hardened Bearing Steel
• Operating Temperature: -15°C to 80°C
• Features: Compact radial design, low-friction operation, self-adjusting capability, high rigidity, high positioning accuracy, low noise, excellent wear resistance, and long service life.

Common Replacements:

• THK SR20V Linear Guide Bearing Block
• THK SR20W Linear Guide Bearing Block
• THK SR20SB Linear Guide Bearing Block