THK HSR20A Linear Guide Block And Rail Assembly

Description:

The THK HSR20A Linear Ball Bearing Way Set 11-Inch is a complete precision linear motion assembly consisting of one 11-inch (280 mm) HSR20 guide rail and one HSR20A flange-type linear guide block. Designed with THK's Four-Way Equal Load technology, it delivers smooth, high-rigidity, and highly accurate linear motion while supporting equal loads in radial, reverse-radial, and lateral directions. Commonly installed in CNC machine tools, industrial robots, semiconductor equipment, packaging machinery, and factory automation systems, this assembly is used by maintenance teams, OEM machine builders, and system integrators for machine repair, retrofit, expansion, and replacement. 

Applications:

The THK HSR20A Linear Ball Bearing Way Set 11-Inch is ideal for compact CNC machining centers, robotic positioning systems, semiconductor manufacturing equipment, optical inspection machines, medical devices, automated assembly systems, packaging machinery, and precision industrial automation requiring smooth, low-friction, and highly accurate linear motion. The 280 mm rail provides an excellent travel length for compact positioning and automation applications. 

Technical Specifications:

• Manufacturer: THK Ltd.
• Brand: THK
• Product Type: Precision Linear Ball Bearing Way Set
• Series: HSR Global Standard
• Bearing Block Model: HSR20A (Flange Type)
• Number of Bearing Blocks: 1
• Guide Rail Size: HSR20
• Guide Rail Length: 11 in (280 mm)
• Guide Rail Width: 20 mm
• Guide Type: Precision Recirculating Ball Linear Guide
• Block Height (M): 30 mm
• Block Width (W): 63 mm
• Block Length (L): 74.3 mm
• Mounting Dimensions (B × C): 53 mm × 40 mm
• Mounting Thread: M6
• Rail Mounting Hole Pitch: 60 mm
• Basic Dynamic Load Rating: 21.8 kN
• Basic Static Load Rating: 31.5 kN
• Load Design: Four-Way Equal Load
• Preload Grade: Normal (No Symbol), C1 (Light), C0 (Medium) available
• Material: Hardened Bearing Steel
• Lubrication: Grease or Oil Lubrication Compatible
• Features: High rigidity, flange-type carriage, self-aligning capability, high positioning accuracy, low-friction operation, and long service life.

Common Replacements:

• THK HSR20HA Linear Guide Block
• THK HSR20CA Linear Guide Block
• THK SHS20A Linear Guide Block