• SPOT AND PROJECTION BENCH WELDERS (2101D-2144D and 2102N)
  • SPOT AND PROJECTION BENCH WELDERS (2101D-2144D and 2102N)
  • SPOT AND PROJECTION BENCH WELDERS (2101D-2144D and 2102N)
  • SPOT AND PROJECTION BENCH WELDERS (2101D-2144D and 2102N)
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SPOT AND PROJECTION BENCH WELDERS (2101D-2144D and 2102N)

SPOT AND PROJECTION BENCH WELDING MACHINES

FOOT-OPERATED RESISTANCE WELDERS (16kVA-150kVA)

The spot and projection bench resistance welders (2101D-2144D and 2102N) are designed to offer high performance and operational flexibility across a wide range of industrial applications. The nominal power at 50% in direct current ranges from 16kVA to 150kVA, making them suitable for both light-duty work on small components and more robust assemblies.

All machines, except for the model (2101N), are equipped with a microprocessor control with direct reading of the welding current, a key feature to ensure reliability, repeatability, and process control. The cylinder and rod are made of thick chrome-plated steel, a construction choice ideal for heavy-duty environments requiring long service life and mechanical resistance. The adjustable anti-rotation device ensures precision and stability during every welding cycle.

Another strength of these machines is the use of pneumatic components that do not require lubrication, thus eliminating the emission of oil mist and helping to maintain a cleaner and safer working environment. Models (2121D-2144D) are equipped with a double-stroke cylinder and key switch control, allowing advanced adjustment of welding parameters.

Each machine includes a built-in compressed air filter-regulator unit and a shut-off valve for air supply, ensuring continuity and efficiency in airflow management. The two-stage electric foot pedal allows the piece to be clamped and the welding process to start only when conditions are optimal, improving weld quality and reducing the risk of errors. There is also provision for connecting a second two-stage electric foot pedal, with direct recall of welding program no. 2, except for models (2101D-2102N-2103D) and versions equipped with options (2161) and (2181).

The welding transformer, plates, electrode holders, and copper alloy electrodes are water-cooled, while the windings are resin-encapsulated for added protection and greater long-term reliability. The synchronous control with SCR is isolated from the cooling circuit and protected by a thermostat, ensuring safe operation even in the most demanding conditions.

All models, except for (2102N), are equipped as standard with a two-hand control with safety timer and removable key selector to prevent accidental or unauthorized activation. The dual-control is standard in projection welding versions and available upon request for spot welders. Models (2101D-2103D-2144D) are prepared for dual-control connection, thus offering additional options for customizing the work cycle.

FAQ and insights

Electrical resistance welding is a metal joining process that uses heat generated by the electrical resistance of the material itself.

The parts to be joined are placed in contact with each other and an electric current is passed through them.

The flow of current generates heat that melts the metal in the contact area, thus creating a permanent and strong joint.

Electrical resistance welding offers several advantages over other welding methods.

  • High joint strength and reliability: it creates strong, durable joints that perform well over time.
  • High production speed: the process is fast, making it ideal for high-volume manufacturing.
  • Low heat input: it helps minimise material distortion and preserves the properties of the components.
  • Clean and slag-free process: no filler material is required, reducing the need for post-weld cleaning.
  • Possibility of welding different metals: it is suitable for a wide range of materials and industrial applications.

Electrical resistance welding is widely used across a broad range of industrial applications.

  • Automotive: used in the production and assembly of vehicle components.
  • Household appliances: ideal for manufacturing metal parts and structures for domestic appliances.
  • Metal construction: suitable for assembling sheet metal components and metal structures.
  • Railway industry: used in the production and maintenance of railway components.
  • Electronics manufacturing: employed in the assembly of metal parts and components for electronic devices.

Tecna bench spot and projection welders are robust and reliable machines designed for electric resistance welding of sheet metal.

They offer several technical features, including:

  • Rated power: from 16 kVA to 150 kVA at 50% continuous current.
  • Microprocessor control: with direct reading of the welding current for greater process accuracy.
  • Chrome-plated steel cylinder and rod: designed for heavy-duty applications and long service life.
  • Pneumatic components: designed to operate without the need for lubrication.
  • Double stroke cylinder: with key-operated control for greater ease of use.
  • Compressed air filter regulator unit: included in the machine for optimal management of the pneumatic system.
  • Two-stage electric foot pedal: for precise control of welding operations.
  • Water cooling system: the welding transformer, plates, electrode holders and copper alloy electrodes are water-cooled to ensure high performance.
  • Synchronous control: with water-isolated SCRs and protection thermostat.
  • Two-hand control with timer: designed to ensure maximum safety during machine operation.
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