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Tecna 6121N-6129N – 90-200kVA

TECNA Spot and projection welders - 6121N-6129N - 90-200kVA

Versatile welders for spot and projection welding.
These units are mechanically designed to minimize flexions, which combined with the inverter technology allows achieving high quality welding.

Category: Spot welding

Tags: Tecna Spot welding system


  • The 6 operating modes of the TE700 control unit enable optimization of the welding mode of the material to be welded. The proportional valve implemented in the compressed air circuit guarantees a constant and precise operating pressure. The proportional valve is programmable directly from the control and allows to assign to each program its own pressure value.

    Main Features:

    • MF welders for high quality welding work.

    • Modular design of the mechanical structure, arms, jaws, cylinder.

    • Cylinder with chrome plated shaft for lifetime heavy duty operation; adjustable rotation lock.

    • Lubrication-free, environmentally friendly compressed air components to avoid the release of oil mist.

    • Double-stroke cylinder with push-button control or air pedal.

    • Pressure-free lowering of electrodes for adjustment and maintenance.

    • Compressed air filter unit and tank built into the unit.

    • Compressed air separator.

    • Water-cooled transformer, plates, electrode holders and electrodes; transformer with epoxy-coated windings.

    • Two-stage electric foot starter, allowing workpieces to be clamped and welded only when correctly positioned.

    • Connection preparation for an additional foot pedal for direct recall of another welding program.

    • Two-hand safety control with timer for optimum safety and removable selector switch. Buttons with two-hand control are standard on projection welders only, available on request for spot welders.

    • Emergency stop switch for immediate unit stop.

    • Overload protection switch.

    • Flow monitor that stops the welder when cooling water is not circulating, and valve that stops cooling water flow when unit is off.

    • USB port for data storage (optional).

    • Compressed air circuit with low pressure creep-in time (optional), especially for projection and spot welding of sensitive components.

    • Position sensor (optional) that measures the original material thickness and verifies the presence and allowable dimensions of the welding materials before welding. It can also measure the penetration of the electrodes at the end of the welding process. The delivery of the welding current can be interrupted when the set penetration depth is reached.

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