
The Miller Millermatic® 255 Auto Body Package (951821) is a comprehensive welding system designed to meet the rigorous demands of OEM automotive repair. This package is built around the Millermatic 255, an inverter-based power source that delivers up to 350 amps of welding output while maintaining a portable form factor. The machine features Auto-Line™ technology, allowing it to operate on any single-phase input voltage between 208V and 240V without manual linking, ensuring consistent performance even on dirty power.
This specific SKU is tailored for multi-material fabrication and repair. It includes the EZ-Latch™ Dual Cylinder Running Gear, which accommodates two gas cylinders, allowing technicians to switch between shielding gases (such as 100% Argon for Aluminum/SiBr and an Argon/CO2 mix for Steel) without changing bottles. The package comes standard with three distinct MIG guns: a 15-foot MDX™-250 for steel, a 12-foot Bernard® Q200 for aluminum, and a 10-foot MDX™-100 for silicon bronze. This ensures that the liner and consumables are always optimized for the specific wire being used, preventing cross-contamination and feeding issues.
Technically, the machine excels with its Pulsed MIG capabilities. Pulsed MIG provides lower heat input, which is critical when welding thin gauge automotive sheet metal to minimize warping and burn-through. It also reduces spatter, cutting down on grinding time. The 7-inch color LCD interface utilizes Auto-Set™ Elite, offering predefined weld settings for various materials and wire diameters, while also allowing experienced welders to fine-tune voltage and wire feed speed manually. The system supports wire diameters from 0.023" to 0.045" for steel and up to 0.047" for aluminum.
| Additional Information |
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| Brand:Miller |
| Voltage:208/230 V |
| Amperage:350 |
| Duty Cycle:60% |
| Weld Process:MIG (GMAW) |
| Packaging Description:1 of each |
| Process Type:MIG, Pulsed MIG, Flux Cored |
| Input Voltage / Phase:208/240V 1-Phase |
| Amperage Range:20 A - 350 A |
| Wire Feed Speed Range:50 - 800 IPM |
| Dimensions:32.00 in (H) x 13.75 in (W) x 45.00 in (L) |
| Weight:67.1 kg |
| Warranty Period:3 Years |
| Compatible Wire Sizes:0.023" - 0.045" (Steel), 0.035" - 0.047" (Aluminum) |