Hypertherm Powermax105
Key Specifications
Weight
output current
input voltage
output power
cut capacity mild steel
cut capacity stainless
Overview
The Hypertherm Powermax105 is a 105-amp handheld and mechanized plasma cutting system from Hypertherm, the American plasma cutting technology company headquartered in Hanover, New Hampshire. Hypertherm is the world's leading plasma cutting technology company, with products used in shipbuilding, structural fabrication, HVAC, pressure vessel manufacturing, and general metal fabrication worldwide.
The Powermax105 provides 105 amps of output current for cutting mild steel, stainless steel, and aluminum up to 38 mm (1.5 in) with a clean, dross-free cut. The system's Smart Sense technology automatically adjusts gas pressure based on the selected cutting mode — eliminating manual pressure adjustment errors. The unit is compatible with both hand cutting (with Hypertherm's ergonomic hand torch) and mechanized/CNC table cutting with a machine torch mounted on a CNC plasma table.
In CNC/mechanized mode, the Powermax105 pairs with Hypertherm's CNC-compatible machine torch (PMX105 machine torch) and integrates with CNC plasma table controllers via the standard torch voltage and arc start signals. The unit's Powermax series design provides excellent cut quality, long consumable life, and reliable arc starting — key requirements for unattended CNC plasma production.
The Powermax105 is used as the plasma source on mid-to-large CNC plasma tables from Lincoln Electric, ESAB, Messer, Koike, and dozens of other table manufacturers. Hypertherm's position as the dominant plasma source technology supplier means the Powermax105 is the plasma source most commonly specified by professional fabricators upgrading their CNC plasma cutting capability. Pricing typically runs $6,000–$9,000 for the power supply and torch package.
Full Specifications
| Parameter | Value |
|---|---|
| Output Current | 105 A maximum |
| Input Voltage | 200-600 VAC 3-phase (50/60 Hz), auto-sensing |
| Output Power | 10.5 kW |
| Cut Capacity Mild Steel | 38 mm (1.5 in) recommended; 57 mm (2.25 in) severance |
| Cut Capacity Stainless | 25 mm (1 in) recommended |
| Cut Capacity Aluminum | 25 mm (1 in) recommended |
| Torch Types | Hand torch (75-degree, 15-degree), machine torch (mechanized/CNC) |
| Gas Types | Air, nitrogen, oxygen, argon-hydrogen (application dependent) |
| Smart Sense | Automatic gas pressure adjustment based on cutting mode |
| Duty Cycle | 60% at 105A, 100% at 84A |
| Arc Voltage Output | Yes (for CNC torch height control) |
| Machine Weight | 22 kg (48 lb) |
| Certifications | CE, CSA, UL |
| Electrical | 200-600 VAC 3-phase (auto-sensing), 50/60 Hz |
Strengths & Limitations
Strengths
- 105 A output cuts mild steel to 38 mm cleanly and severs to 57 mm — covers the full range of structural plate work in fabrication shops and service centers
- Smart Sense automatic gas pressure adjustment eliminates the most common plasma quality problem (incorrect pressure) without operator intervention
- Compatible with CNC plasma tables from all major manufacturers (Lincoln Electric, ESAB, Messer, Koike) via standard torch voltage interface
- Hypertherm's X-Definition consumable technology provides superior cut quality at the edge compared to standard consumables — fewer dross and bevel issues
- Hypertherm's dominant market position means the widest selection of consumables, the most published cutting parameters, and the largest installed base of experienced operators
Limitations
- 105 A output is limited for cutting material above 38 mm — applications requiring clean cuts on 50+ mm steel require Hypertherm's HPR or XPR series
- Plasma cutting produces heat-affected zones and edge oxidation that require post-cut cleaning for welding — laser cutting produces a cleaner, tighter HAZ
- Three-phase power requirement (200-600 VAC) means a dedicated electrical panel circuit — not suitable for single-phase power environments without a transformer
Best For
Frequently Asked Questions
01
Hand cutting uses a hand torch with a safety trigger and ergonomic handle — the operator manually guides the torch. Mechanized/CNC cutting uses a machine torch mounted in a CNC plasma table's Z-axis holder — the CNC controls all motion and fires the plasma via an arc start relay signal. The Powermax105 supports both: specify the machine torch when ordering for CNC table integration.
02
For mild steel: compressed air or oxygen (oxygen provides cleaner edge on thicker material). For stainless steel: compressed air or nitrogen (nitrogen reduces edge oxidation for weld-quality cuts). For aluminum: compressed air or nitrogen. Smart Sense automatically sets correct pressure for the selected gas and torch.
03
Integration requires a machine torch in the Z-axis holder, a torch-on relay interface from the CNC arc start output to the Powermax105's remote start terminal, and arc voltage output connected to the table's torch height control input. Hypertherm's CPC port provides a single D-sub connector carrying all CNC interface signals, and most table manufacturers supply a matching cable.
Videos
Queensland Welding Supplies
Hypertherm North America
Hypertherm North America
Community Discussions
Pricing and buying discussion — What kind of Coolant does your shop use? : r/Machinists - Reddit
Pricing and buying discussion — CNC Coolant suggestions : r/Machinists - Reddit
Owner experience and review — Changing CAM from Powermill : r/Machinists - Reddit
Options and configuration advice — Coolant Replacement Options : r/Machinists - Reddit
Links to community discussions. Summaries are editorial — visit the original thread for full context.