THK LBF50 KX1K27 BALL SPLINE FLANGE NUT

Description:

The THK LBF50 KX1K27 Ball Spline Flange Nut is a high-torque, flanged ball spline nut designed to provide simultaneous precision linear motion and torque transmission along a compatible spline shaft. Built for a 50 mm spline shaft, the LBF50 features a flange-mounted cylindrical nut with recirculating ball elements that deliver high rigidity, low friction, and excellent positioning accuracy in demanding industrial motion systems. Commonly installed in industrial robots, CNC automation equipment, semiconductor manufacturing systems, packaging machinery, automated assembly lines, and material handling equipment, this ball spline nut is used by maintenance teams, OEM machine builders, and system integrators for machine repairs, retrofits, and replacement of worn spline nut assemblies.

Applications:

The THK LBF50 KX1K27 is commonly used in industrial robots, pick-and-place systems, semiconductor manufacturing equipment, CNC machine tools, automated assembly systems, packaging machinery, precision inspection equipment, medical automation, and material handling applications where accurate linear motion and high torque transmission are required from a single shaft assembly.

Technical Specifications:

• Manufacturer Part Number (MPN): LBF50 KX1K27
• Manufacturer: THK Ltd.
• Product Type: Ball Spline Flange Nut
• Series: LBF High Torque Ball Spline
• Nut Type: Flanged Cylindrical Nut
• Nominal Spline Shaft Diameter: 50 mm
• Motion Type: Simultaneous Linear Motion and Torque Transmission
• Mounting Style: Flange Mount (Bolt-On)
• Guide Type: Recirculating Ball Spline
• Basic Dynamic Torque Rating: 1,100 N·m
• Basic Static Torque Rating: 1,940 N·m
• Basic Dynamic Load Rating: 46.6 kN
• Basic Static Load Rating: 73.0 kN
• Standard Seal: UU Double-End Seals
• Available Preload Grades: Normal, CL (Light), CM (Medium)
• Available Accuracy Grades: Normal, H (High Accuracy), P (Precision)
• Standard Lubrication: Grease Lubrication
• Oil Hole: Yes
• Operating Temperature: -15 °C to 80 °C
• Construction Material: Iron-Based Bearing Steel
• Features: High rigidity, high torque capacity, compact flange design, low friction, smooth linear travel, and long service life.

Common Replacements:

• THK LBF50UU
• THK LBS50
• THK LBH50