THK HSR55 Recirculating Ball Linear Guide Bearing Block

Description:

The THK HSR55 Linear Guide Rail Bearing Block 55mm is a precision recirculating ball linear motion bearing designed for use with THK HSR55 series linear guide rails in heavy-duty, high-precision automation systems. Utilizing THK's four-way equal load design, the bearing block provides exceptional rigidity, high load capacity, smooth low-friction movement, and accurate linear positioning under loads from any direction. Commonly installed in CNC machining centers, industrial robots, semiconductor manufacturing equipment, heavy-duty automation systems, precision inspection machinery, and material handling equipment, this linear bearing block is used by maintenance teams, OEM machine builders, and system integrators for equipment repair, retrofit, expansion, and replacement.

Applications:

The THK HSR55 linear bearing block is widely used in CNC milling machines, machining centers, gantry systems, robotic automation, semiconductor production equipment, packaging machinery, heavy material handling systems, precision measuring equipment, and industrial manufacturing lines. Its large 55 mm guide size, high rigidity, and four-row recirculating ball construction make it ideal for applications requiring superior load capacity, high positioning accuracy, and long-term reliability in demanding operating environments.

Technical Specifications:

• Manufacturer: THK Ltd.
• Product Type: Linear Bearing Block
• Series: HSR Global Standard LM Guide
• Compatible Rail Size: 55 mm
• Guide Type: Four-Row Recirculating Ball Linear Motion Guide
• Load Direction: Four-way equal load (radial, reverse radial, and lateral)
• Compatible Rail Width: 53 mm
• Rail Height: 44 mm
• Rail Mounting Hole Pitch: 120 mm
• Available Block Types: R, LR, CA, CB, HA, HB, YR
• Dynamic Load Rating (HSR55CA): 121 kN
• Static Load Rating (HSR55CA): 146 kN
• Material: Hardened Bearing Steel
• Lubrication: Grease or Oil Lubrication
• Optional QZ Long-Term Lubricator Available
• Standard Seal Options: UU, SS
• Features: High rigidity, self-aligning capability, precision-ground raceways, low-friction operation, interchangeable components, heavy-load performance, and long service life.

Common Replacements:

• THK HSR55CA1SS
• THK HSR55HA1SS
• THK HSR55LR1SS