Items 3416-3418

- Rocker arm pneumatic spot welders with TE90 control unit- 16-25 kVA

 

ROCKER ARM PNEUMATIC SPOT WELDERS - ITEMS 3416-3418 - 16 TO 25 kVA AT 50%
MAIN WELDER FEATURES  
Items 3416-3418
  • Adjustable arms up to 320 mm, enabling to adjust the welder according to the work exigencies.
  • Chrome-copper electrode-holders for heavy duty and long life, designed for both straight and angled assembling.
  • Adjustable electrodes stroke, enabling to reach the max. working rate.
  • Water-cooled transformer, with epoxy resin coated windings.
  • Water cooled arms, electrode-holders and electrodes.
  • Synchronous SCR contactor insulated from cooling water circuit with protection thermostat.
  • All models have been designed for both single and automatic cycle.
  • Two stage electric foot control for clamping and welding pieces only if correctly positioned
  • The welder has been designed for connecting a second two stage electric foot. This additional electric foot enables the recalling of the twin pre-setting for time and current, useful when it is necessary to carry out two different welds on the same piece.
  • 24 Vcc 5 way solenoid valve.
  • Double effect pneumatic cylinder, lubrication free against oil mist.
  • Electrodes force adjustable by means of a protect built-in compressed air filter unit with gauge-pressure, with semi-automatic moisture discharging.
  • Electrodes speed regulators (both opening and closing), cylinder end-stroke shock absorber, and silencers for compressed air discharge assuring the minimum noise.


TECHNICAL DATA

ITEM 3416 3417 3418
Nominal power at 50% kVA 16 20 25
Maximum welding power kVA 32 44 62
Short circuit current kA 11.8 14 16.5
Maximum welding current on aluminium kA - - 15.1
Maximum welding current on steel kA 9.4 11.2 13.2
Thermal current 100% A 3300 3500 3800
No load secondary voltage V 3.4 4 4.6
Supply voltage 50Hz * V 400 400 400
Cables section L=30 m mm2 10 10 16
Delayed fuses A 32 40 50
         
Min. electrodes throat depth mm 230 230 230
Max. electrode force (6 bar) daN 240 240 240
Electrode stroke mm 8-44 8-44 8-44
         
Max. electrodes throat depth mm 550 550 550
Max. electrode force (6 bar)  daN 115 115 115
Electrode stroke mm 15-85 15-85 15-85
         
Arms diameter mm 36 36 40
Electrode-holders diameter mm 19 19 22
Standard electrodes cone diameter mm 12.7 12.7 14.8
         
Compressed air supply bar 6.5-10 6.5-10 6.5-10
Air for 1000 spots (6 bar)        
stroke 20 mm Nm3 2.8 2.8 2.8
max. stroke Nm3 4.3 4.3 4.3
Air supply hose mm 8 8 8
         
Water cooling  l/min 2.5 3 4
         
Aerial noise produced dB(A) < 70 < 70 < 70
Measure conditions        
working stroke mm 20 20 20
welding time cycles 24 17 14
welding current kA 8.8 11.2 13.2
working rating in welds/min   10 10 10
         
Net weight (approximately) kg 112 117 125



* Different voltages and frequencies on request


OPTIONS
3426 Version with adjustable arms length 380-700 mm instead of 230-550 mm. For items 3417-3418 only.
3427 Version with adjustable arms gap from 125 to 420 mm. Fixed arms length 500 mm. For item 3418 only.

ACCESSORIES
3436 Additional electric foot-control for carrying out welding processes with direct recall of the twin pre-setting for time and current.
3437 Kit to obtain adjustable arms gap for item 3418. Fixed arms length 500 mm, adjustable arms gap from 125 to 420 mm.
3446 Brass arm with reduced overall dimensions, Æ=62, D=36, L1=300, L=380-700 mm (for items 3416-3417).
3447 Brass arm with reduced overall dimensions, Æ=65, D=40, L1=300, L=380-700 mm (for item 3418).
3448 Brass arm with reduced overall dimensions with frontal electrode, Æ=45, D=36, L1=300, L=380¸700 mm (for item 3416-3417).
3449 Brass arm with reduced overall dimensions with frontal electrode, Æ=50, D=40, L1=300, L=380¸700 mm (for item 3418).
3444 Brass arm without electrode-holder, D=36, L=380¸700 mm (for item 3417).
3445 Brass arm without electrode-holder, D=40, L=380¸700 mm (for item 3418).

ELECTRODES FOR ITEMS 3416-3417
3420 Straight electrodes, a pair.
3421 Offset electrodes, a pair.
3422 Angled offset electrodes, a pair.
3423 Bent electrodes, a pair.
3424 Flat electrodes, a pair.
3425 Swivel electrode diameter 30 mm.

ELECTRODES FOR ITEMS 3418
3430 Straight electrodes, a pair.
3431 Offset electrodes, a pair.
3432 Angled offset electrodes, a pair.
3433 Bent electrodes, a pair.
3434 Flat electrodes, a pair.
3435 Swivel electrode diameter 30 mm.

ELECTRODES FOR ARMS ITEMS 3448-3449:
3566 Electrode-holder with electrode item 3567, ring nut and fittings.
3567 Offset electrode for item 3566.
3569 Straight electrode for item 3566.

Specifications subject to change without notice.