Kjellberg CUTFIRE 90 Air Plasma Cutting System

Mid-range 90 A plasma cutter with an 80 % duty cycle

The Kjellberg CUTFIRE 90 keeps the compact housing of the CUTFIRE 70 but raises the cutting current to 20 to 90 A and the duty cycle to 80 % at 40 °C. Kjellberg lists a recommended cutting range of 25 mm in mild steel, a maximum capacity of 40 mm and a piercing capacity of 20 mm. The housing measures 585 x 303 x 505 mm and the unit weighs 30 kg, only 2 kg more than the smaller model, so the extra power reserve does not change how the unit is moved around a shop or site.

Technical specifications

Air plasma cutting with automatic parameter setting

Like the rest of the CUTFIRE range, the CUTFIRE 90 runs on compressed air. The operator picks material, thickness and cutting mode on the colour display, and the control derives the process parameters from that choice. Kjellberg says the system recognises the connected KjellCut torch and its hose assembly length and corrects current and pressure accordingly, and that it switches automatically between quality and severance cuts. Input voltage, input current, temperature and gas flow are monitored, and a drop in gas pressure below the minimum stops the cut before the torch is damaged.

A CNC interface and an integrated marking function are standard from 45 A upward, so the CUTFIRE 90 can also be fitted to a cutting table for mechanised work.

Choosing the CUTFIRE 90 for fabrication work

The 90 A rating suits shops that cut plate in the 10 to 25 mm range regularly and occasionally need more. Its 32 A slow mains fuse is double the 16 A of the CUTFIRE 70, so check the supply on site and the cable and breaker ratings before ordering. Because the 90 shares its housing with the 70, the choice between them is mainly about cutting thickness and duty cycle rather than space. The product page of Kjellberg lists a 20 to 70 A current range in one table row for this model, while the brochure and the text give 20 to 90 A; this page uses the brochure value.

Kjellberg also names cutting of sheet metal, profiles and pipes among the uses, along with marking and gouging.

Documents and quotation

The attached Kjellberg CUTFIRE brochure gives the technical data of the whole series side by side, which makes it easy to compare the 90 with its neighbours. To request a quotation, tell us the model, site voltage and frequency, material and thickness range, whether cutting is hand-held or on a table, and the torch hose length. See plasma cutting systems for other plasma equipment.