301147 - Miller Spoolmatic Pro 15A Aluminum MIG Gun, 15ft Cable

Miller Spoolmatic Pro 15A Spool Gun (301147)

The Miller Spoolmatic Pro 15A is an industrial-grade spool gun designed to overcome the challenges of feeding soft aluminum wire. Engineered for professional fabrication environments, this 200-amp, 100% duty cycle gun provides consistent wire feeding performance for both 4000 and 5000 series aluminum alloys. The unit features a 15-foot cable assembly, offering significant reach for large weldments such as truck beds, trailers, and marine vessels.

One of the standout technical features of the Spoolmatic Pro is its dual wire tension settings. Operators can switch between specific tension profiles for 4000 or 5000 series wires, ensuring the drive rolls grip the wire firmly without deforming it. This precision reduces bird-nesting and arc fluctuations, which are common issues in aluminum MIG welding. The motor and drive assembly are housed in a durable case designed to withstand harsh industrial conditions while maintaining precise feed speeds ranging from 70 to 875 IPM.

Maintenance and serviceability are critical for high-uptime operations. The Spoolmatic Pro addresses this with a tool-less head tube design that can be rotated or removed in seconds. This allows for quick liner changes or head tube swaps to different configurations (sold separately) for accessing tight spaces. The drive roll assembly is easily accessible, and the drive rolls themselves are reversible, doubling their service life. The integrated gas valve in the handle supports a two-stage trigger operation, permitting gas preflow to protect the weld start from porosity.

Key Technical Specifications:

• Amperage Rating: 200 A at 100% Duty Cycle
• Wire Diameter Capacity: .030 – 1/16 in (0.8 – 1.6 mm) aluminum
• Spool Capacity: 4-inch (102 mm) spools, typically 1 lb
• Cable Length: 15 ft (4.6 m)
• Compatibility: Direct connect to many Miller industrial power sources; others may require a WC-24 control.