THK Co., Ltd. HSR55CB1SS Linear Motion Guide Block

Description:

The THK HSR55CB1SS Linear Motion Guide Block is a heavy-duty flange-type recirculating ball linear bearing block designed for use with THK HSR55 series linear guide rails in high-load, high-precision motion systems. Featuring a CB flange configuration with six through mounting holes and an SS sealing arrangement, this bearing block delivers exceptional rigidity, smooth low-friction travel, four-way equal load capability, and reliable positioning accuracy in demanding industrial environments. Commonly installed in CNC machining centers, industrial robots, semiconductor manufacturing equipment, automated production lines, heavy material handling systems, and precision inspection machines, 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 HSR55CB1SS is widely used in CNC milling machines, machining centers, gantry automation systems, robotic transfer equipment, packaging machinery, semiconductor manufacturing equipment, precision measuring machines, and heavy-duty factory automation systems. Its flange-type construction with through-hole mounting provides excellent rigidity, high load capacity, and stable linear motion for applications requiring accurate positioning, long service life, and dependable performance under heavy radial, reverse radial, and lateral loads.

Technical Specifications:

• Manufacturer Part Number (MPN): HSR55CB1SS
• Manufacturer: THK Ltd.
• Product Type: Linear Motion Guide Block
• Series: HSR Global Standard LM Guide
• Block Type: CB (Flange Type, Through-Hole Mounting)
• 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): 163 mm
• Mounting Hole Spacing (B × C): 116 × 95 mm
• Mounting Hole Diameter: 16 mm
• Rail Width: 53 mm
• Rail Height: 44 mm
• Rail Mounting Hole Pitch: 120 mm
• Dynamic Load Rating: 121 kN
• Static Load Rating: 146 kN
• Grease Nipple: B-PT1/8
• Block Weight: Approximately 4.5 kg
• Material: Hardened Bearing Steel
• Seals: SS (End, Side, and Inner Seals)
• Lubrication: Grease or Oil Lubrication
• Features: Flange-type carriage with six through holes, four-way equal load design, self-aligning capability, precision-ground raceways, high rigidity, low-friction operation, and long service life.

Common Replacements:

• THK HSR55CB1UU
• THK HSR55CB1SSC1
• THK HSR55HB1SS