THK HSR55H Recirculating Ball Linear Guide Block

Description:

The THK HSR55H Linear Guide Standard Ball Bearing Block 55mm is a long flange-type recirculating ball linear bearing block designed for use with THK HSR55 series linear guide rails in heavy-duty, high-precision linear motion systems. Featuring the HSR55HA long block design, the bearing block provides increased load capacity, exceptional rigidity, four-way equal load capability, and smooth low-friction operation for accurate positioning under demanding industrial conditions. Commonly installed in CNC machining centers, industrial robots, semiconductor manufacturing equipment, heavy-duty automation systems, precision inspection machines, and material handling equipment, this linear guide block is used by maintenance teams, OEM machine builders, and system integrators for equipment repair, retrofit, expansion, and replacement.

Applications:

The THK HSR55H Linear Guide Block is widely used in CNC milling machines, machining centers, gantry automation systems, robotic transfer equipment, semiconductor manufacturing equipment, packaging machinery, precision measuring systems, and heavy-duty factory automation. Its long flange carriage design provides greater load ratings and enhanced rigidity compared with standard flange blocks, making it ideal for applications requiring excellent moment resistance, high positioning accuracy, and extended service life.

Technical Specifications:

• Manufacturer: THK Ltd.
• Product Type: Linear Motion Guide Block
• Series: HSR Global Standard LM Guide
• Model: HSR55H (HSR55HA Type)
• Block Type: HA (Long Flange Type)
• Guide Type: Four-Row Recirculating Ball Linear Motion Guide
• Compatible Rail Size: 55 mm
• Overall Height (M): 70 mm
• Block Width (W): 140 mm
• Overall Length (L): 201.1 mm
• Mounting Hole Spacing (B × C): 116 × 95 mm
• Mounting Thread: M14
• Rail Width: 53 mm
• Rail Height: 44 mm
• Rail Mounting Hole Pitch: 120 mm
• Dynamic Load Rating: 148 kN
• Static Load Rating: 194 kN
• Grease Nipple: B-PT1/8
• Block Weight: Approximately 5.7 kg
• Material: Hardened Bearing Steel
• Lubrication: Grease or Oil Lubrication
• Interchangeable Components: Yes (Global Standard Series)
• Features: Long flange carriage, four-way equal load design, self-aligning capability, precision-ground raceways, high rigidity, excellent moment load resistance, low-friction operation, and long service life.

Common Replacements:

• THK HSR55HA1SS
• THK HSR55HAM
• THK HSR55CA1SS