Lincoln Electric Tomahawk 625
Key Specifications
Cutting Area
Plasma Power Source
Max Cutting Thickness
Positioning Speed
Cutting Speed
Control System
Overview
The Lincoln Electric Tomahawk 625 is a CNC-integrated plasma cutting system built around Lincoln Electric's Tomahawk 625 plasma power source, one of the most widely used air-plasma units in North American fabrication shops. When paired with a CNC gantry table and torch height control, the Tomahawk 625 becomes the cutting engine for a capable, production-ready plasma cutting cell accessible to shops that need reliable results without a large capital commitment.
The Tomahawk 625 power source delivers 62 A of output current optimized for cutting mild steel up to 19 mm in production and severance on thicker material. Air plasma operation keeps consumable and gas costs low, and the unit's duty cycle rating supports continuous production use across full shifts. Pilot arc starting eliminates the need for contact starting, reducing torch wear and enabling clean pierce starts on coated or rusty plate that would trouble lesser units.
As a CNC system, the Tomahawk 625 is typically configured on a light-to-mid-duty gantry table with servo or stepper axes, rack-and-pinion drives, and an arc voltage torch height control. Software options include Lincoln Electric's COLUMBUS NC or compatible third-party CAM packages, giving operators a path to DXF import and nested cutting from day one. The system suits operations cutting parts up to roughly 3/4 inch (19 mm) in mild steel on a daily basis.
The Tomahawk 625 platform is particularly attractive to shops already using Lincoln Electric welding equipment — the familiarity of the brand, the availability of consumables through Lincoln distributors, and the unified service relationship make it a low-friction addition to an existing Lincoln-centric shop floor. For start-up fabricators and smaller job shops, it represents one of the most cost-effective entries into CNC plasma cutting with a recognizable industrial brand behind it.
Full Specifications
| Parameter | Value |
|---|---|
| Cutting Area | 4 ft × 4 ft to 4 ft × 8 ft (table configuration dependent) |
| Plasma Power Source | Lincoln Electric Tomahawk 625 (62 A output) |
| Max Cutting Thickness | 19 mm production / 25 mm severance (mild steel) |
| Positioning Speed | Up to 4,000 mm/min (157 in/min) |
| Cutting Speed | Up to 3,500 mm/min (material/thickness dependent) |
| Control System | COLUMBUS NC or compatible CNC controller with arc voltage THC |
| Table Size | 4 ft × 4 ft or 4 ft × 8 ft (configuration dependent) |
| Machine Weight | Approx. 450 – 750 kg (table size dependent) |
Strengths & Limitations
Strengths
- Tomahawk 625 power source is a proven, widely supported air-plasma unit with broad consumable availability
- Pilot arc starting enables clean pierces on coated, rusty, or uneven plate surfaces
- Lower entry price makes CNC plasma accessible to start-up shops and smaller fabricators
- Familiar Lincoln Electric brand simplifies service relationships for shops already using Lincoln welding equipment
Limitations
- 62 A air-plasma limits productive cutting to approximately 19 mm mild steel — not suited for heavy plate work
- Smaller cutting envelope (4×4 to 4×8 ft) restricts use to smaller parts or requires plate repositioning
- Cut edge quality does not match high-definition plasma or fiber laser systems on thinner material
Best For
Frequently Asked Questions
01
The Tomahawk 625 plasma source is rated for production cutting on mild steel up to approximately 19 mm (3/4 inch) at 62 A output. Severance capacity extends to roughly 25 mm, though cut edge quality degrades beyond the production rating.
02
When configured with Lincoln Electric's COLUMBUS NC controller, the system includes integrated DXF import and nesting capability, eliminating the need for a separate CAM license. Third-party CAM packages can also be used if a different CNC controller is specified.
03
Yes. The Tomahawk 625 is available both as a standalone hand/machine torch plasma cutter and as the power source for CNC table configurations. Shops can use the same unit for both table and hand torch work by switching the torch connection, providing versatility beyond the CNC application.
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Links to community discussions. Summaries are editorial — visit the original thread for full context.