KP44N-3545-15 - Magnum PRO Aluminum Liner .035-3/64 15ft

Precision Aluminum Wire Feeding for Magnum PRO Systems

The Lincoln Electric KP44N-3545-15 is a specialized MIG gun liner designed to facilitate the smooth transmission of aluminum welding wire through Magnum PRO cable assemblies. Engineered specifically for wire diameters ranging from .035 inches (0.9 mm) to 3/64 inches (1.2 mm), this liner addresses the unique tribological challenges associated with feeding soft alloys. Unlike standard steel liners which can cause friction, shaving, and eventual clogging when used with aluminum, this component utilizes a low-friction internal composition that ensures consistent wire delivery speed and arc stability.

With a total length of 15 feet (4.6 meters), the KP44N-3545-15 is sized to fit standard Magnum PRO Semi-Automatic guns as well as Magnum PRO Robotic Torches. The liner provides the necessary structural support to the wire column to prevent buckling—commonly referred to as "bird-nesting"—at the drive rolls or within the cable bundle. This is particularly critical in robotic applications where downtime for maintenance directly impacts cycle times and production throughput. The liner installs directly into the gun backend and seats firmly against the diffuser or contact tip (depending on specific gun configuration), ensuring a continuous, protected path for the consumable.

Industrial maintenance and repair operations (MRO) relying on Lincoln Electric welding systems will find this genuine OEM part essential for maintaining weld quality in aluminum fabrication. By reducing feed resistance, the liner prolongs the life of drive rolls and reduces the strain on wire feeder motors. It is compatible with a broad range of Magnum PRO platforms, making it a versatile stock item for shops handling diverse aluminum projects.

Technical Specifications

• Part Number: KP44N-3545-15
• Wire Compatibility: Aluminum, .035" - 3/64"
• Length: 15 Feet
• System Compatibility: Magnum PRO Semi-Auto, Magnum PRO Robotic