Tecna Portable Hand-Held Spot Welders

Tecna Hand-Helds Data Sheet

General Information

Spot Weld, Inc. is a distributor for an Italian brand of imported equipment that has a strong foothold in the US market. They are most often in stock and ready to ship.

The Tecna line, imported from Italy, has beaten all the domestic competition with their economical, yet high quality line of welding equipment. The equipment is well supported and parts are readily available in North America and worldwide.

Availability is subject to stock at the time of order, please inquire for current inventory.

HAND OPERATED SPOT GUN ITEM 7902 – 2.5 KVA

Manually operated, no air or water lines to encumber movement.
Versatile portable spot welder for auto body repair shops and maintenance shops.
Synchronous built-in electronic timer with SCR from 2 to 65 cycles.
Compensation circuit starts the timer only when there is a proper passage of current, which enables to perform on oxidised sheets, on surfaces with paint residues or on black sheets.
Current control with phase shift adjustment to carry out difficult welds, on very thin thickness, on rods with reduced diameter, on stainless steel sheet and similar.
Force adjustment with scale in daN.
Additional arm couplings to provide larger opening between arms.
All transformers are coated with F class insulation material. Tests are made using 4000 volts.
Max weld current approximately 6,000-Amps (with shortest arms, narrowest gap).
94mm (3.7″) gap between the arms.
22mm (0.866″) diameter arms.
Supplied complete with 125 mm (4.9″) long arms.
Max electrode force with arm length L=125mm is 120daN (270lbsf)
Max electrode force with arm length L=500mm is 38daN (85lbsf)
Max 380 spots per hour (6-7 spots per minute, roughly need to wait 10 seconds between welds to dissipate heat).
Choice of additional arm configurations are available, see technical data for details. 12mm diameter rod for electrodes standard.
7902 technical data

PNEUMATIC GYROSCOPIC WATER COOLED SPOT GUN ITEM 7913 – 6 KVA

Fully water-cooled and pneumatic (“automatic”) portable spot gun.
Similarly specified as the manual 7902 gun, but with considerably higher duty cycle and automatic clamping. (Welds the same, but will not overheat or overburden the operator).
Uses standard RWMA electrodes, available throughout North America (The 7902 uses copper rod).
For high operating rate works in car body repair and light production works in Industry.
Synchronous built-in electronic timer with SCR from 2 to 65 cycles.
Compensation circuit starts the timer only when there is a proper passage of current, which enables to perform on oxidised sheets, on surfaces with paint residues or on black sheets.
Current control with phase shift adjustment to carry out difficult welds, on very thin thickness, on rods with reduced diameter, on stainless steel sheet and similar.
Balanced construction for easy operation.
Thread base for fixing on a bench.
A built-in differential pressure switch operates the timer when the electrode force is correct.
Additional arm couplings to provide larger opening between arms.
All transformers are coated with F class insulation material. Insulation test performed at 4000 V.
To be used with arms item 7512 – 7513 – 7514 – 7515 (on request).
Weld arms and spring balancer sold separately.
Max weld current approximately 6,000-Amps (with shortest arms, narrowest gap).
94mm (3.7″) gap between the arms.
22mm (0.866″) diameter arms.
Supplied complete with 125 mm (4.9″) long arms.
Max electrode force with arm length L=125mm is 120daN (270lbsf)
Max electrode force with arm length L=500mm is 38daN (85lbsf)
Max 2000 spots per hour (33 spots per minute, roughly need to wait 2 seconds between welds to dissipate heat).
Choice of arms and electrodes. 1MT/4RW tapered electrode holders.
7913 technical data