ENRX (EFD Induction) Industrial Induction Heating Equipment

Industrial induction heating systems by ENRX (formerly EFD Induction): stationary Sinac converters, mobile Minac and air-cooled Ventac units, Weldac tube welders, HardLine hardening machines, HeatLine heaters and furnaces, Terac systems, and custom coils.

Sinac stationary heat generators

Sinac stationary systems serve brazing, shrink-fitting, seam normalising, and wire heating at 85–87% efficiency. Each unit combines a converter, capacitors, and matching transformer in single or Twin versions. Power modules and boards are matched by serial.

Versions: Sinac SM and Twin
System efficiency: 85–87%
Brazing, normalising, wire lines
Modules: converters, capacitors, boards

Minac mobile induction equipment

Minac mobile units deliver 6–140 kW continuous power (10–220 kW max) at 10–100 kHz for workshop and site heating. Units include a 10-inch touch screen, Twin outputs, and water-cooled handheld transformers (HHT). Tooling supports bolt heating and stripping.

Output: 6–140 kW cont. / 220 kW max
Frequency: 10–100 kHz, single or Twin
Handheld transformers (HHT) & hoses
Tasks: brazing, bolt heating, stripping

Ventac air-cooled induction units

Ventac provides 25 or 50 kW continuous air-cooled induction output in a 42 kg unit with SiC transistor technology above 97% efficiency and a portable external control unit. With the fan as the only moving part, upkeep requires only air filter replacement. Heating cables span 5 to 25 m.

Output: 25 or 50 kW continuous
Weight: 42 kg, air-cooled design
SiC transistors, >97% efficiency
ECU 10" TFT, 5–25 m cables, filters

Weldac high-frequency tube welders

Weldac solid-state induction tube welders deliver 50 to 2,200 kW at frequencies up to 500 kHz with 85–95% efficiency from rectifier to coil for carbon steel, stainless steel, and aluminium pipe mills. Automatic load matching and quick coil changes cut downtime.

Power: 50–2,200 kW (up to 2.2 MW)
Frequency: up to 500 kHz, 85–95% eff.
Automatic load matching & quick coil
Metals: carbon, stainless, aluminium

HardLine induction hardening machines

HardLine machines cover vertical, horizontal centreless, rotary table, and 1–4 station crankshaft hardening, including HardLine M and VL units up to 2,000 mm / 600 kg. Horizontal models use Sinac converters. Spindles and quench manifolds are matched by serial.

Formats: VL, VXL, HardLine M, rotary
VL capacity: up to 2,000 mm / 600 kg
Crankshaft lines: 1 to 4 stations
Powered by Sinac frequency converters

HeatLine forging heaters and furnaces

HeatLine covers CHC billet heaters, CBB horizontal and CHV vertical heaters (to 1,500 mm), plus FIB tilt furnaces to 6,000 kg, DAB, FIM, 180° FAR, and LAB melting units. Systems heat steel, copper, aluminium, titanium, and brass. Crucibles and coils match specs.

Heaters: CHC, CBB, CHV (up to 1,500 mm)
FIB tilt furnaces: up to 6,000 kg
DAB, FIM, 180° FAR & LAB furnaces
Metals: steel, Cu, Al, brass, titanium

Terac deck straightening systems

The containerised Terac 25/40 (25/40 kW, 3x400 V) straightens ship decks and bulkheads from one side without open flames. A 10 kg deck inductor heats 8 mm steel in ~8 seconds with Curie-point shutoff, complemented by a 2 kg handheld unit, R407c chiller, and 45–60 m reach.

Terac 25/40 rating: 25 / 40 kW, 3x400 V
8 mm steel plate: ~8 s heating cycle
Working radius: 45 m (60 m optional)
10 kg deck coil, 2 kg hand unit, R407c

Custom induction coils and consumables

ENRX makes conventional, machined, 3D-printed, and hybrid coils modelled in 3D for exact reproduction. Tube-mill consumables include HTF impeders (standard, +50% ferrite, hollow), ferrite cores, Ferroglass and S300 Weld Guard sleeves, scarfers, and ~3 bar filters.

Coils: conventional, machined, 3D, hybrid
HTF impeders (+50% ferrite, hollow)
Ferroglass & S300 Weld Guard sleeves
Coolant pressure: ~3 bar (45 PSI)

ENRX heritage from EFD Induction and pure-play heating focus

Headquartered in Skien, Norway, ENRX draws on more than 75 years of induction heating expertise rooted in Germany’s FDF (founded 1950) and Norway’s ELVA Induksjon (founded 1981), which merged into EFD Induction in 1996.

Following the February 2026 separation of charging operations into ENRX IPT, ENRX dedicates its global resources to industrial induction heating.

More than 30,000 ENRX installations operate across over 80 countries in automotive, tube and pipe, electrotechnical, aerospace, renewable energy, and shipbuilding plants. In China, operations continue under ENRX China (Shanghai), supporting equipment integration and component sourcing.

Selecting ENRX heat generators, tube welders, and coils

Process selection depends on workpiece conductivity, section geometry, cycle time, and production throughput.

Stationary Sinac converters (85–87% efficiency) fit automated brazing, seam normalising, and wire lines, while Weldac solid-state welders (50–2,200 kW, up to 500 kHz, 85–95% efficiency) serve continuous longitudinal tube and pipe mills.

HardLine machines handle surface and through-hardening including VL units up to 2,000 mm / 600 kg and 1–4 station crankshaft lines; HeatLine heaters and FIB tilt furnaces process billets and melts up to 6,000 kg; Ventac (25/50 kW, 42 kg) and Minac (6–220 kW) cover portable and field applications alongside custom 3D-modelled coils and HTF impeders.

ENRX and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of ENRX and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.