THK HSR55LR1KKEM Recirculating Ball Linear Bearing Block

Description:

The THK HSR55LR1KKEM Linear Rail Bearing Block is a long-type recirculating ball linear bearing block designed for use with THK HSR55 series linear guide rails in heavy-duty, high-precision linear motion systems. The extended LR carriage provides higher load capacity and greater moment rigidity than the standard block, while the KK sealing configuration offers enhanced contamination protection and the EM grease specification ensures reliable initial lubrication. Commonly installed in CNC machining centers, industrial robots, semiconductor manufacturing equipment, heavy-duty automation systems, 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 HSR55LR1KKEM is widely used in CNC milling machines, gantry machining centers, robotic automation systems, semiconductor manufacturing equipment, packaging machinery, heavy-duty factory automation, precision measuring systems, and material handling equipment. Its long-block design provides increased load capacity, excellent rigidity, superior moment resistance, and smooth linear motion, making it ideal for applications requiring high positioning accuracy and extended service life under continuous industrial operation.

Technical Specifications:

• Manufacturer Part Number (MPN): HSR55LR1KKEM
• Manufacturer: THK Ltd.
• Product Type: Linear Motion Guide Block
• Series: HSR Global Standard LM Guide
• Block Type: LR (Long Standard Block)
• Guide Type: Four-Row Recirculating Ball Linear Motion Guide
• Compatible Rail Size: 55 mm
• Overall Height (M): 80 mm
• Block Width (W): 100 mm
• Overall Length (L): 201.1 mm
• Mounting Hole Spacing (B × C): 75 × 95 mm
• Mounting Thread: M12 × 18 mm
• Compatible 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
• Material: Hardened Bearing Steel
• Seal Type: KK (Double End Seals with Side and Inner Seals)
• Lubrication: EM Grease Factory Filled
• Features: Long carriage design, four-way equal load capability, self-aligning construction, precision-ground raceways, high rigidity, excellent moment load capacity, low-friction operation, and long service life.

Common Replacements:

• THK HSR55LR1SS
• THK HSR55LR1UU
• THK HSR55LR1QZSSC0