10261102 - Tweco Smoke Master SM400 Fume Extraction MIG Gun 15ft

Efficient Fume Extraction for Industrial Welding

The Tweco Smoke Master SM400 is a premium air-cooled MIG gun designed specifically for the source capture of welding fumes. Rated at 400 Amps at 60% duty cycle, this gun is built to handle heavy-duty industrial fabrication while significantly reducing the welder's exposure to harmful particulates, including hexavalent chromium and manganese. By integrating the vacuum channel directly into the gun assembly, the Smoke Master captures fumes at the arc before they can enter the operator's breathing zone or disperse into the facility.

Heavy-Duty Performance & Design

Engineered for durability, the SM400 features a rugged outer cover that protects the internal power cable, gas hose, and vacuum hose from abrasion and hot sparks. The 15-foot cable provides ample reach for large weldments, while the Tweco-style rear connection ensures compatibility with a wide range of wire feeders equipped with Tweco adapters. The gun is designed to feed wire sizes up to 1/16" (1.6mm), making it versatile for structural steel, heavy equipment repair, and general manufacturing.

Optimized Airflow and Ergonomics

Unlike bulky add-on extraction kits, the Smoke Master is purpose-built with an integrated vacuum chamber. This design minimizes weight and bulk, allowing for better maneuverability in tight spaces. An adjustable slide valve on the handle allows the operator to regulate the vacuum flow, preventing shielding gas disturbance while maintaining effective fume capture. The ergonomic handle design helps reduce wrist strain during long shifts, making it a preferred choice for safety-conscious fabrication shops.

• Amperage: 400 A


• Length: 15 ft


• Wire Capacity: Up to 1/16"


• Connection: Tweco Style