TECNA pneumatic suspended spot welding guns (3321-3328)

In modern sheet metal manufacturing, achieving consistent weld quality while maintaining operator efficiency is essential. The TECNA 3321-3328 suspended pneumatic spot welding machines have been developed for industrial environments where reliability, repeatability and ease of use are key requirements.

Designed for professional resistance spot welding applications, these suspended welding systems are widely suitable for fabrication companies, automotive suppliers, metalworking industries and manufacturers requiring accurate spot welding on steel components, galvanised sheets and assembled metal parts.

The suspended configuration allows the welding unit to be positioned exactly where it is needed, making these machines particularly effective for production lines and workstations where operators perform frequent welding cycles. Combined with a balancer, the ergonomic suspension system reduces handling effort and improves operator comfort during continuous production.

The TECNA range covers different production requirements through six models: TECNA 3321, TECNA 3322, TECNA 3323, TECNA 3324, TECNA 3327 and TECNA 3328. Each model has been designed to provide the correct balance between welding capacity, electrode force and power according to the application.

Integrated electronic control is a defining feature of the 3321-3328 series. The control unit is built directly into the welding machine, reducing the need for external equipment and allowing easier installation within industrial work areas. Available electronic controls include TE300, TE470 and TE480, providing advanced management of welding programmes, current regulation and process parameters.

The different configurations available make these machines suitable for a wide variety of manufacturing processes. Operators can select different welding arm lengths, electrode solutions and accessories to adapt the machine to specific production requirements, including applications involving reinforcements, profiles and areas with limited accessibility.

For demanding production environments, temperature control is a critical factor. The integrated water cooling system maintains stable operating conditions by cooling the main welding components, including electrodes, electrode holders, welding arms, transformer and thyristor. This ensures reliable performance during extended welding cycles.

The pneumatic operating system provides precise adjustment of welding force and speed, allowing manufacturers to optimise parameters according to material type and thickness. The chrome-plated cylinder and rod are designed for durability, resistance to wear and long-term operation without the requirement for oil mist lubrication.

Operator safety and machine durability have been considered throughout the design. The fully protected structure with rubber coverings helps protect the equipment in industrial environments, while the handle safety device prevents accidental operation. Standard equipment includes a thermal magnetic circuit breaker with residual current protection, emergency stop button and air filter-regulator assembly.

Maintenance efficiency is another important advantage of the TECNA 3321-3328 series. The power cable can be replaced quickly without opening the machine, reducing downtime and simplifying service operations in production environments.

The machines can be configured with a complete range of accessories, including welding arms, electrodes, electrode holders, balancers, cooling flow switches and programmable handle controls. These options allow each spot welding system to be adapted to the specific needs of the production process.

With their combination of power, flexibility and ergonomic design, TECNA suspended spot welders represent an effective solution for companies looking for reliable industrial welding equipment for repetitive production operations.

Applications include automotive components, sheet metal fabrication, metal structures, industrial appliances and general manufacturing, where stable welding performance and reduced production downtime are essential.

ATS Lamberti supports customers in selecting the most suitable TECNA welding solution, helping with machine configuration, welding accessories and technical requirements. From choosing the correct model to defining electrodes, arms and electronic controls, ATS Lamberti provides specialist assistance before and after supply.