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

Smooth Aluminum Feeding with the Magnum PRO KP3991-6 Liner

Every welder knows that aluminum is a different beast compared to steel. It's soft, it kinks easily, and it hates friction. When you are running a robotic welding cell, those problems are magnified because you aren't there to wiggle the gun or adjust the angle mid-weld. That is why the Lincoln Electric KP3991-6 Conduit Liner is a game-changer for your Magnum PRO Robotic setup. This isn't just a plastic tube; it is a conduit engineered to deliver soft aluminum wire smoothly from the feeder to the puddle without the drama.

The KP3991-6 is designed to handle wire diameters from .035" up to 1/16", covering the most common aluminum welding applications. Its low-friction composition prevents the wire from shaving or dragging against the liner walls, which is the number one cause of clogged liners and erratic arcs. When your liner is doing its job, your wire speed stays constant, your arc length remains stable, and your robot puts down a perfect bead every time. If you are seeing burn-backs or inconsistent starts, a worn-out or incorrect liner is often the culprit.

Replacing your liner is one of the cheapest and most effective maintenance tasks you can perform to keep your robotic cell running at peak performance. This 6-foot liner is sized for standard robotic cable lengths, making installation straightforward. Simply remove the old liner, inspect your wire guides, and install the KP3991-6 to restore factory-fresh feeding performance. Don't let a ten-dollar feeding issue cause a thousand-dollar scrap part; trust genuine Lincoln Electric liners to keep your aluminum production moving.

Why Welders Choose This Liner:

• Reduced Friction: specifically formulated for soft alloys.
• Consistent Feeding: Helps maintain constant amperage and voltage.
• Durability: Resists kinking and wear inside the cable bundle.
• Perfect Fit: No guessing games—it snaps right into Magnum PRO Robotic guns.