KP45-40-15-B10 - Lincoln Magnum 100L Replacement Liner .035-.045 15ft Bulk Pack

Technical Overview of the Lincoln Electric KP45-40-15-B10 Cable Liner

The Lincoln Electric KP45-40-15-B10 is a specialized consumable designed to maintain the operational efficiency of Magnum 100L MIG guns. This cable liner serves as the internal conduit for welding wire, guiding it from the wire drive mechanism through the gun cable to the contact tip. Specifically engineered for wire diameters ranging from .035 inches (0.9 mm) to .045 inches (1.2 mm), this liner ensures precise clearance for optimal wire feeding. The liner measures 15 feet (4.6 meters) in length, corresponding to the standard cable length of the Magnum 100L series, though it may require trimming during installation to achieve the perfect fitment at the gas diffuser end.

Constructed from high-grade wound steel, the liner provides the necessary flexibility to navigate the curvature of the MIG gun cable while maintaining sufficient rigidity to prevent collapsing or kinking under the push force of the drive rolls. The internal surface finish is critical for minimizing friction coefficient; a smooth path reduces drag on the wire, which is essential for preventing "birdnesting" at the feeder and ensuring consistent amperage transfer at the contact tip. Over time, cable liners accumulate copper flaking, shop dust, and lubricant residues, which increase friction and cause erratic arc performance. Regular replacement is a standard preventive maintenance procedure.

This specific SKU, KP45-40-15-B10, represents a bulk packaging option containing ten (10) individual liners. This configuration is optimized for industrial environments, fabrication shops, and maintenance departments where high-volume welding leads to frequent consumable turnover. By maintaining a stock of these liners, operators can minimize downtime associated with feeding issues. The liner is compatible with solid steel wires and flux-cored wires within the specified diameter range. It is not recommended for aluminum wire, which typically requires a polymer or Teflon liner to prevent shaving and friction issues.

Proper installation involves removing the old liner, uncoiling the new liner to ensure it is straight, inserting it through the gun connector, and trimming the excess length at the front end according to the manufacturer's specifications for the Magnum 100L. Failure to trim the liner correctly can lead to gas leakage or poor electrical contact. This component is a direct OEM replacement, ensuring full compatibility with Lincoln Electric's design tolerances.