Portable spot welders

PNEUMATIC SPOT GUN ITEM 7911 - 2.5 kVA

7911
  • Light and proved spot gun for car body repair and maintainance/preassembly 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 sheets and similar.
  • Additional arm couplings to provide larger opening between arms.
  • A built-in differential pressure switch operates the timer when the electrode force is correct.
  • All transformer are coated with F class insulation material that does not dry out and become brittle. Insulation test performed at 4000 V.
  • To be used with arms item 7401 / 7402 / 7403 / 7404 / 7405 / 7406 / 7407 (on request).

Pulsation weld time control available (version P).

 

PNEUMATIC WATER COOLED SPOT GUN ITEM 7915 - 6 KVA

7915
 

Water cooled. Same features as in item 7913.

 

PNEUMATIC GYROSCOPIC WATER COOLED SPOT GUN ITEM 7913 - 6 KVA

  • Fully water-cooled portable spot gun
  • 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 transformer 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).

Pulsation weld time control available (P version).

7913

TECHNICAL DATA

ITEM 7911 7913 7915
Synchronous timer with SCR
Time adjustment cycles 2-65 2-65 2-65
Current adjustment 40-100%
Cooling Air Water Water
         
Supply voltage 50Hz * V 400 400 400
Nominal power at 50% kVA 2.5 6 6
Maximum welding power kVA 16 16 16
Short circuit current
with arms L=
kA
mm
8.2
125
8.2
150
8.2
150
Thermal current 100% A 700 1700 1700
No load output voltage V 2.5 2.5 >2.5
Insulation class F F F
Cables section for L<15 m mm2 2.5 2.5 2.5
Delayed fuses A 16 16 16
         
Standard arms throat depth L mm 125 125 -
Max. electrode force
with arms L=
daN
mm
125
125
120
150
120
150
Arms gap mm 96 94 94
Max. electrodes stroke
with arms L=
mm
mm
55
125
55
155
70
150
         
Water cooling l/min 2.5 3.7 3.7
Water max. pressure bar - - 2.5
         
Aerial noise produced dB(A) 62 63 64
Level of vibrations m/s2 < 2.5 < 2.5 < 2.5
Measure conditions        
welding time cycles 4 6 6
welding current kA 4.1 6.1 6.1

working rating in welds/min

 

11

15

15

         
Mains cable length m 3.8 3.8 3.8
Net weight with arms 125 mm kg 10.5 11 -
Net weight with arms 150 mm kg - - 12
Net weight with arms 500 mm kg 13 13.5 13.6

* Different voltages and frequencies on request

 These welders have been designed to be used for a professional purpose in industrial environments. If the welder is used on public low voltage network which supplies buildings used for domestic purposes.

 

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Specifications subject to change without notice.