301739 - Miller XR-A Aluma Pro Plus Push-Pull MIG Gun 35ft Air-Cooled

Industrial-Grade Aluminum Wire Feeding Solution

The Miller XR-A Aluma Pro™ Plus Gun (301739) represents the pinnacle of push-pull wire feeding technology, specifically engineered for high-volume aluminum fabrication. This 35-foot, air-cooled system is designed to interface seamlessly with Miller Intellx™ wire feeders, providing a robust solution for the inherent challenges of feeding soft 4000 and 5000 series aluminum wires over long distances. With a rated output of 300 amps, this gun surpasses many competitors in its class, allowing for sustained welding on thicker plate materials without overheating.

Technically, the gun is built for precision and serviceability. It features a 3-3/4 turn potentiometer recessed into the handle, offering high-resolution wire feed speed (WFS) control directly at the weld joint. This eliminates the non-productive time associated with operators walking back to the power source to make adjustments. The drive assembly utilizes an isolated, common, knurled drive roll which provides positive traction on soft wire without deforming it, a critical factor in maintaining consistent arc characteristics. The tension settings are calibrated specifically for aluminum grades, ensuring the feed mechanism applies the correct pressure to prevent wire shaving or slippage.

Maintenance and longevity are core aspects of the XR-A design. The cable assembly is protected by a full-length, Velcro-seamed leather jacket, which shields the leads from abrasion and spatter while allowing for easy access during liner replacement. The liner itself is designed to be replaced independently of the feed cable, significantly reducing consumable costs and downtime. Furthermore, the head tube is rotatable and self-seating, ensuring optimal current transfer and gas sealing while allowing the operator to configure the torch angle for difficult-to-access joints. This unit comes complete with drive rolls, idler rolls, and an inlet guide, ready for immediate integration into industrial shipbuilding, trailer manufacturing, or sign fabrication workflows.