The MK Products Cobramig 300 Digital Power Supply & Feeder (187-001) is a complete all-in-one push-pull wire feed system rated to 300 A at 60% duty cycle, featuring a detachable digital wire feeder, patented push-pull technology, and compatibility with both 14-pin analog and digital push-pull guns — purpose-built for aluminum, steel, and stainless steel welding from .030 to 1/16 in. wire without changing drive rolls.
| Specification | Detail |
|---|---|
| Model | Cobramig 300 Digital Power Supply & Feeder |
| Part Number | 187-001 |
| Spool Capacity | 12 in. diameter spool (plastic or wire basket); bulk wire drum via optional adapter kit (005-0786) |
| Wire Diameter Range | .030–1/16 in. (0.8–1.6 mm) aluminum; .030–.045 in. (0.8–1.2 mm) solid steel, stainless steel, and flux-cored — no drive roll changes required |
| Voltage Source | 240 VAC 60 Hz / 50 A single phase or 480 VAC 60 Hz / 30 A single phase input; no load max OCV 40 V DC |
| Drive Roll Type | Patented push-pull drive system; universal drive rolls feed .030–1/16 in. without changes |
| Compatible Welder Series | Self-contained power supply (no separate welder required); compatible with 14-pin analog and digital push-pull guns including Python X, Cobra X, Prince X series |
| Cable / Reach | Feeder separates from power supply; interface cables available in 25 ft, 50 ft, or greater lengths (sold as accessories) |
| Duty Cycle | 300 A at 60% duty cycle (480 VAC); rated output 9.0 kW at 30 V DC |
| User Memories | Up to 8 fully customizable weld memory settings, changeable from the gun |
| Weight | 245 lb dry / 275 lb shipping |
| Dimensions | 18.5 in. W × 34.5 in. H × 36 in. L |
| Mobility | 4-wheel roll-around chassis with integrated cylinder rack |
The Cobramig 300 Digital was engineered to solve the most persistent challenge in aluminum MIG welding: reliable, consistent wire feeding over long cable runs. Its patented push-pull design feeds wire simultaneously from both the feeder and the gun motor, eliminating the bird-nesting and burnback that plague push-only systems when running soft aluminum wire at length.
- Aluminum fabrication and structural aluminum welding: The primary application. Push-pull drive allows cable runs of 25–50 ft or more without wire feeding problems — critical in shipbuilding, aerospace structures, and large aluminum fabrication where the power source cannot be positioned at the weld joint.
- Steel and stainless MIG on long cable runs: The Cobramig 300 feeds .030–.045 in. solid and flux-cored steel and stainless without switching drive rolls, making it a versatile shop feeder for multi-material operations.
- Robotic and semi-automated fixture welding: The detachable wire feeder with CobraLoc can be rail- or boom-mounted, separating from the power supply over long interface cable lengths for automated and semi-automated cell integration.
- Production shops with multiple wire types: 8 customizable weld memories let operators switch between saved voltage, wire speed, and material parameters on the fly — directly from the gun — without walking back to the power source.
Unlike a conventional wire feeder, the Cobramig 300 is a self-contained power supply and feeder — it generates its own welding output. There is no separate power source required. It requires either:
- 240 VAC / 60 Hz / 50 A single phase utility power input, or
- 480 VAC / 60 Hz / 30 A single phase utility power input.
The unit is not powered by a separate CV welder; it plugs directly into facility electrical service. The detachable digital wire feeder connects to the power supply over interface cables available in 25 ft, 50 ft, or longer lengths, allowing the feeder module to be placed at or near the weld joint while the power supply stays centrally located. The CobraLoc lever decouples the feeder from the power supply in a single motion for rail or boom applications.
See all wire feed systems and power sources at WeldingMart to compare the Cobramig 300 with other MK Products and Lincoln feeder options.
WeldingMart carries MK Products wire feed systems, including the Cobramig 300 Digital, with fast U.S. shipping and knowledgeable pre-sale support for push-pull system selection.
- Authorized dealer: WeldingMart sources MK Products equipment through authorized channels, ensuring you receive genuine equipment with valid warranty coverage.
- Specialist support: Selecting the right push-pull gun, cable length, and optional accessories (bulk drum adapter, interface cables) for your application requires expertise. Our welding specialists can walk through your setup before you order.
- Fast U.S. shipping: The Cobramig 300 ships from U.S. locations with freight options appropriate for a 245 lb system.
- Complete system sourcing: WeldingMart stocks compatible MK push-pull guns, interface cables, and accessories so you can configure a complete system in one order.