300000 - Miller XR-Aluma-Pro Air-Cooled Push-Pull Gun 15ft 300A

Heavy-Duty Aluminum Welding Solution

The Miller XR-Aluma-Pro Air-Cooled Push-Pull Gun (Stock #300000) is the premier choice for professional fabricators demanding precision and reliability in aluminum welding applications. Designed specifically to handle the challenges of feeding soft aluminum wire, this 15-foot gun system eliminates common feeding issues such as birdnesting and erratic arc performance. With a robust 300-amp rating at 100% duty cycle using mixed gases, it is built to withstand the rigors of continuous industrial production environments found in shipyards, trailer manufacturing, and sign fabrication.

Optimized Wire Feeding Technology

At the heart of the XR-Aluma-Pro is its advanced drive assembly. Miller has engineered this gun with dual wire tension settings, allowing operators to switch seamlessly between 4000 and 5000 series aluminum wires. This specificity ensures that the drive rolls grip the wire with the exact pressure needed—firm enough to push but gentle enough to prevent deformation of softer alloys. The result is a consistent, stable arc that produces high-quality welds with minimal spatter and rework.

Designed for the Welder

Ergonomics play a critical role in productivity, and the XR-Aluma-Pro excels in comfort. The gun features a balanced design that reduces wrist strain during extended welding sessions. The 360-degree rotatable head tube allows welders to access difficult joints and tight corners without contorting their hands or the cable assembly. Furthermore, the full-length leather cable cover provides exceptional durability, protecting the power cable and gas hose from hot surfaces, abrasion, and shop floor debris.

Simplified Maintenance

Downtime is costly, which is why Miller designed this gun for rapid serviceability. The easy-access drive assembly allows for tool-less cleaning and drive roll changes. The head tube can be removed and replaced without tools, and the wiper and liner are easily accessible. This thoughtful engineering ensures that routine maintenance takes minutes, not hours, keeping your production line moving efficiently. Whether you are welding thick aluminum plate or thin gauge sheet, the Miller XR-Aluma-Pro delivers the performance and reliability Josef Gas customers expect.