THK Co., Ltd. HSR20RSS(GK) Linear Bearing Block

Description:

The THK HSR20RSS (GK) Linear Bearing Block is a compact precision recirculating ball linear guide carriage designed for use with THK HSR20 series guide rails. It provides smooth, accurate, and high-rigidity linear motion while supporting loads equally in all four directions. Commonly installed in CNC machine tools, industrial robots, semiconductor manufacturing equipment, packaging machinery, and automated production systems, this bearing block is used by maintenance teams, OEM machine builders, and system integrators for equipment repairs, machine retrofits, and replacement of worn linear motion components.

Applications:

The THK HSR20RSS (GK) Linear Bearing Block is suitable for CNC machining centers, robotic positioning systems, semiconductor equipment, automated assembly lines, packaging machinery, medical devices, precision inspection equipment, and factory automation systems requiring high positioning accuracy, excellent rigidity, and low-friction linear motion. Its narrow block design is ideal for installations with limited mounting space while maintaining THK's four-way equal load capability.

Technical Specifications:

• Manufacturer: THK Ltd.
• Manufacturer Part Number (MPN): HSR20RSS (GK)
• Brand: THK
• Product Type: Linear Bearing Block (LM Guide Carriage)
• Series: HSR Global Standard (GK Series)
• Bearing Block Model: HSR20RSS
• Guide Rail Compatibility: THK HSR20 Series Rails
• Guide Type: Recirculating Ball Linear Motion Guide
• Block Type: Narrow Standard Block (R Type)
• Mounting Style: Top Mount with Tapped Holes
• Height: 30 mm
• Width: 44 mm
• Length: 74 mm (with standard seals)
• Basic Dynamic Load Rating: Approximately 13.8 kN
• Basic Static Load Rating: Approximately 23.8 kN
• Load Direction: Four-Way Equal Load Design
• Material: Hardened Bearing Steel
• Lubrication: Grease or Oil Lubrication Compatible
• Seal Type: SS Double End Seals
• Features: High rigidity, self-adjusting capability, compact design, low-friction operation, high positioning accuracy, and interchangeable with compatible HSR20 guide rails.

Common Replacements:

• THK HSR20R (GK) Linear Bearing Block
• THK HSR20RM (GK) Linear Bearing Block
• THK HSR20XR (GK) Linear Bearing Block