Home » Tecna Spot Welders » Tecna 3321 16kVA Suspended Spot Welding Gun

Tecna 3321 16kVA Suspended Spot Welding Gun

Price on Application

Further Reductions Available On Request 01276 505012

  • 400V
  • 16kVA @ 50% Duty
  • Suited to 3 + 3mm



The Tecna 3321 is a handheld air operated, water cooled spot welding gun for production work.  Designed to be suspended from gantries or a boom, these spot welders are highly manoeuvrable when supported by a balancer.  A gyro allows the operator to effortlessly tilt the gun to any angle.  A 16kVA spot welding output at 50% duty cycle, with a 37kVA maximum output power.  Maximum welding capacity (with shortest arms) 3 + 3mm


Key Features:

  • High productivity achieved with rational design, reduced dimensions, high welding capacity.
  • Built-in control unit, reduced dimensions and reduced installation costs.
  • High electric efficiency.
  • Reduced installation costs.
  • Totally enclosed, rubber protected for easy and safe operation.
  • Gyro suspension on sealed bearings together with a spring balancer guarantees accurate manoeuvrability at any degree.
  • Rotation locking device.
  • Water cooled: electrode-holders, arms, transformer and SCR contactor.
  • Adjustable electrode distance.
  • Adjustable short working stroke for heavy duty.
  • Temporary extra stroke to reach the areas to be welded.
  • Long working stroke to weld reinforcement ribs, jobs in areas difficult to be reached.
  • Supplied complete with earth leakage switch with safety control.
  • Air operation adjustable in strenght and speed.
  • Oiless chromium plated cylinder and shaft for heavy duty operation and long life.
  • Choice of different timers to meet all production requirements.
  • Safety device placed on the handle preventing any accidental start.
  • Quick replacement of the supply cable; it is not necessary to open up the welder to carry out this operation.




Input Voltage 400V 50Hz
Power @ 50% 16 kVA
Maximum Welding Power 37 kVA
Max Welding Capacity 3mm + 3mm
Minimum Arms Length 190 mm
Maximum electrode force @ 6 bar 286 dAN
Maximum Arms Length 650 mm
Maximum electrode force @ 6 bar 95 dAN
Max Mild Steel Weld Thickness with Longest Arms 1.2mm – 1.2mm
Fuse 32A




Length Force Weight Short Stroke Min Short Stroke Max Long Stroke Min Long Stroke Max
190mm 286 dAN 3.3KG 6mm 25mm 30mm 48mm
250mm 227 dAN 4.3KG 7mm 30mm 38mm 60mm
350mm 350 dAN 5.8KG 10mm 41mm 50mm 80mm
508mm 120 dAN 8.5KG 13mm 56mm 70mm 112mm
650mm 95 dAN 10.6KG 18mm 72mm 90mm 140mm



Feel free to contact us with your project requirements.  Generally we would require a material type and thickness to be spot welded, how many spots you may be looking to achieve in an hour and throat depth required.  We are able to offer demonstrations, test welds and advice to help you select the right suspended spot gun for your application.



Tecna Italy are a worldwide resistance welding company.  Back up in the UK on Tecna welding equipment is exceptional and parts availability is very good too.  We still supply parts for 20 + year old Tecna spot welding equipment.