KP3991-6 - Magnum PRO Robotic Aluminum Conduit Liner .035-1/16 (6ft)

Genuine Lincoln Electric KP3991-6 Conduit Liner for Robotic Welding

The Lincoln Electric KP3991-6 is a premium replacement conduit liner designed specifically for the rigorous demands of automated welding environments. Engineered for use with Magnum PRO Robotic MIG guns, this liner is an essential component for maintaining the high efficiency and precision required in robotic cells. It is manufactured to exact tolerances, ensuring a perfect fit within the cable assembly and proper alignment with the contact tip and wire feeder.

This specific liner is tailored for aluminum welding applications. Aluminum wire is significantly softer than steel and prone to deformation, shaving, and "bird-nesting" if subjected to excessive friction or sharp transitions. The KP3991-6 utilizes materials and internal geometry that minimize drag, allowing for the smooth delivery of aluminum wires ranging from .035 inches to 1/16 inches in diameter. The 6-foot length is standard for many robotic arm configurations, providing ample coverage from the feeder to the torch neck.

Sourcing genuine Lincoln Electric parts like the KP3991-6 ensures that your equipment operates within its specified parameters. Using non-OEM liners in high-performance robotic torches can lead to inconsistent wire feeding, arc instability, and increased wear on other consumables. For industrial MRO managers and procurement specialists, stocking these liners is critical for preventive maintenance schedules to avoid costly unplanned downtime in production lines.

Key Technical Specifications:

• Part Number: KP3991-6
• Application: Aluminum Wire Feeding
• Wire Size Range: .035" (0.9 mm) to 1/16" (1.6 mm)
• Length: 6 Feet (1.8 Meters)
• Compatibility: Magnum PRO Robotic MIG Guns