THK Co., Ltd. HSR20LC1SS(GK) Linear Motion Guide Block Assembly

Description:

The THK HSR20LC1SS(GK) Linear Guide Block is a long flange-type precision recirculating ball linear motion bearing designed for use with THK HSR20 series guide rails. As part of THK's Global Standard (GK) interchangeable series, it features a long carriage for increased load capacity and moment rigidity, along with SS end and side seals for enhanced protection against dust and contaminants. Commonly installed in CNC machine tools, industrial robots, semiconductor equipment, packaging machinery, and factory automation systems, this bearing block is used by maintenance teams, OEM machine builders, and system integrators for equipment repair, retrofit, expansion, and replacement.

Applications:

The THK HSR20LC1SS(GK) Linear Guide Block is ideal for CNC machining centers, robotic positioning systems, semiconductor manufacturing equipment, automated inspection machines, medical devices, packaging machinery, and other precision automation systems requiring high rigidity, excellent moment load capacity, smooth linear motion, and long service life. The interchangeable GK design simplifies replacement while maintaining accurate machine performance.

Technical Specifications:

• Manufacturer: THK Ltd.
• Brand: THK
• Manufacturer Part Number: HSR20LC1SS(GK)
• Product Type: Linear Guide Block (LM Guide Carriage)
• Series: HSR Global Standard (GK)
• Block Style: LC (Long Flange Type)
• Rail Compatibility: THK HSR20 Series (20 mm Rail)
• Guide Type: Precision Recirculating Ball Linear Guide
• Interchangeable: Yes (GK Series)
• Seal Configuration: SS (End Seals + Side Seals)
• Overall Height (M): 30 mm
• Block Width (W): 63 mm
• Block Length (L): 90 mm
• Carriage Height: 26 mm
• Mounting Dimensions (B × C): 53 mm × 40 mm
• Mounting Thread: M6
• Rail Width: 20 mm
• Rail Height: 18 mm
• Rail Mounting Hole Pitch: 60 mm
• Basic Dynamic Load Rating: 23.9 kN
• Basic Static Load Rating: 35.8 kN
• Block Weight: Approximately 0.47 kg
• Material: Hardened Bearing Steel
• Lubrication: Grease or Oil Lubrication Compatible (Standard Grease Nipple: B-M6F)
• Features: Four-way equal load design, long carriage for increased moment capacity, high rigidity, self-aligning capability, interchangeable GK design, low-friction operation, and long service life.

Common Replacements:

• THK HSR20LA1SS(GK) Linear Guide Block
• THK HSR20HA1SS(GK) Linear Guide Block
• THK SHS20LC Linear Guide Block