TECNA LINEAR ACTION SINGLE-PHASE SPOT WELDER (8001D..8009D)

When a production line needs reliable resistance spot welding, the machine configuration matters just as much as the rated power. The TECNA 8001D-8009D range covers single-phase linear-action welders from 35 to 80 kVA, with configurations for both spot and projection welding.

These machines are built around a modular concept rather than a one-size-fits-all arrangement. Depending on the component and the welding position, the arms, brackets and cylinder arrangement can be selected to provide the required working area and electrode access. This is particularly useful for manufacturers dealing with different component sizes or changing production requirements.

The mechanical assembly is intended for demanding industrial use. A heavy-duty cylinder with a thick chrome-plated steel rod is combined with an adjustable anti-rotation device, helping maintain controlled linear movement throughout the welding cycle. The pneumatic system uses lubrication-free components, avoiding the need for oil mist lubrication in the air circuit.

Machine handling is straightforward. The double-stroke cylinder is operated by a key control, while the compressed-air circuit includes a filter unit and air supply isolator. Electrode travel can be regulated, and the cylinder is fitted with an end-of-stroke damper. Exhaust silencers further reduce pneumatic noise during operation.

For spot welding applications, the two-stage electric foot switch allows the operator to clamp the workpieces before the weld is triggered. This sequence provides a practical way of checking component positioning before current is applied. Where a component requires different welding settings, the machine can be prepared for a second two-stage foot switch to call up another welding programme.

Cooling is designed for continuous industrial operation. Water cooling is provided for the transformer, plates, electrode holders and electrodes, while the transformer windings are resin encapsulated. The synchronous SCR control is separated from the cooling circuit and includes a thermostat for thermal protection.

Process monitoring is handled through a digital control unit with direct welding-current readout. Additional equipment can be specified according to the application, including a cooling-water shut-off and flow monitoring system, longer arms for selected models, proportional control of welding pressure, a rotary programme selector and pressure-free head descent.

The 8001D-8009D family includes the 8001D, 8002D, 8003D, 8004D, 8005D, 8006D, 8007D and 8009D. Choosing between them depends on the required welding capacity, component geometry, electrode reach and production cycle rather than power alone. Constant-energy welding control is also available for applications where the welding energy needs to be managed more closely.

ATS supplies TECNA resistance welding equipment and provides technical support when selecting the machine configuration. This includes assessing the application, component access, welding method and optional equipment before defining the most suitable setup.

If you are looking for a single-phase spot welder, projection welder or industrial resistance welding machine, contact A.T.S. Lamberti to discuss the TECNA 8001D-8009D range and your specific welding application.