51086SP - Tweco SM500 Fume Extraction MIG Gun, 500A, 15ft, Miller Style, 1/16 Wire

Heavy-Duty Fume Extraction for Industrial Welding

The Tweco Smoke Master 500 (SM500) is a premier solution for high-amperage MIG welding applications requiring stringent fume control. Engineered by ESAB, this air-cooled gun is rated for 500 Amps at a 60% duty cycle, making it ideal for structural steel, heavy fabrication, and manufacturing environments where deposition rates are high and fume generation is significant. The model 51086SP is specifically configured with a 15-foot cable and a Miller-style backend connection, ensuring immediate compatibility with Miller wire feeders and power sources.

Occupational safety regulations continue to tighten regarding welding fumes, particularly hexavalent chromium and manganese. The Smoke Master series addresses this by integrating a high-volume vacuum chamber directly into the gun handle. This design captures fumes at the arc source before they enter the welder's breathing zone or disperse into the facility. Despite the added vacuum hose, the gun maintains a profile that allows for reasonable access to joints, and the vacuum intensity can be adjusted to balance gas coverage with fume capture efficiency.

This specific assembly is set up for 1/16" (1.6mm) welding wire, a common size for heavy plate welding and flux-cored applications. The gun utilizes standard Tweco consumables, which are widely available and cost-effective, reducing long-term operating costs. The rugged construction of the cable assembly features a durable outer sheath that protects the vacuum hose, power cable, and liner from the abrasion and heat typical of industrial floors. For facilities prioritizing welder health without sacrificing the power needed for thick metal fabrication, the Tweco Smoke Master 500 is an essential tool.