ESAB Plasmarc PT-36

The ESAB Plasmarc PT-36 is a heavy-duty water-cooled mechanized plasma torch system engineered for high-amperage industrial CNC plasma cutting applications. Unlike complete power supply or table packages, the PT-36 is a torch system — the cutting head component that pairs with ESAB ESP plasma power sources in production CNC installations. It is one of the most widely recognized mechanized plasma torches in heavy industrial cutting, with a proven track record in shipbuilding, structural steel fabrication, heavy equipment manufacturing, and pressure vessel production.

The PT-36 uses a conventional plasma arc process with gas-shielded or water-injection shielding options, capable of operating at amperages up to 1,000A when paired with appropriate high-amperage ESAB power sources. This extreme amperage capability makes the PT-36 relevant for cutting applications that exceed the practical range of HD plasma systems — specifically, production cutting of structural steel plate in the 2-to-6-inch range where plasma remains more economical than alternative processes. At these thicknesses, cut quality is evaluated differently than thin-plate HD applications, with squareness, consistent kerf width, and absence of excessive dross being the primary quality criteria.

Torch cooling is handled through a closed-loop water cooling circuit that maintains the torch body and nozzle at safe operating temperatures during extended high-duty-cycle operation. The water cooling system allows the PT-36 to sustain cutting duty cycles that would destroy air-cooled torch designs within minutes, making it the appropriate choice for automated CNC lines running production schedules measured in hours per cycle. The torch lead assembly — available in 10, 15, 20, and 25 foot lengths — uses a robust multi-conductor design with integrated coolant supply and return lines, plasma gas, and shield gas passages in a single flexible bundle.

Consumable design for the PT-36 reflects its heavy-duty application: electrodes are hafnium-tipped copper slugs rated for hundreds of arc starts, nozzles are copper with precision orifice geometry maintained to tight tolerances, and the swirl ring and shield are replaceable components that can be refreshed independently without replacing the entire torch body. ESAB supplies consumables in both standard and long-life configurations, with extended-life consumables providing measurably longer service life on high-volume production applications.

The PT-36 mounts to CNC gantry systems through ESAB's standard mechanized mounting collar or custom OEM mounting brackets. The torch body accepts standard THC (torch height control) mounting provisions and outputs arc voltage through the power supply interface for height control system feedback. Water-cooled machine torch systems like the PT-36 require more infrastructure than air-cooled torches — specifically a water chiller or closed-loop cooling system — but this investment is standard practice in heavy plate CNC installations and is routinely included in complete system specifications from ESAB and other heavy plasma OEMs.