TECNA 4647N rocker arm spot welder — 20 kVA, air-operated, single-phase AC. Maximum welding current of 9,600 amps, maximum electrode force of 370 lbs, and maximum throat depth of 27.56 in. with adjustable arms, stroke, and throat. Te101 microprocessor control.
The TECNA 4647N pairs a 20 kVA single-phase AC transformer with air-operated actuation. The 4647N provides a maximum welding current of 9,600 amps, a maximum electrode force of 370 lbs, and a maximum throat depth of 27.56 in. Arm length, electrode stroke, and throat depth are all independently adjustable to accommodate varied part geometries. A water-cooled, epoxy-resin-coated transformer supports extended duty cycles. The standard TE101 microprocessor weld control is front-mounted for real-time parameter viewing. Within the 4640-series pneumatic lineup, the 4647N is the entry-level 20 kVA air-operated model; the 4648N steps up to 25 kVA with a shorter 21.65-in. throat, while the 4649N retains the 27.56-in. throat with 25 kVA.
| Weight | 317 lbs |
|---|---|
| Configuration | Rocker Arm Spot |
| Adjustable Arm Depth | Yes |
| Nominal Power 50% (kVA) | 20 |
| Max Welding Power (kVA) | 39 |
| No-Load Secondary Voltage (V) | 4 |
| Max Welding Current (A) | 12000 |
| Max Weld Curr Steel (kA) | 9.6 |
| Thermal Current 100% (A) | 3500 |
| Supply | 220 / 440 V / 60 Hz |
| Delayed Fuses (220 V) | 80 A |
| Delayed Fuses (440 V) | 40 A |
| Mains Cable (≤30m, 220–440 V) | 0.02 in² (10 mm²) |
| Insulation Class | F |
| Compressed Air | 94–145 psi (6.5–10 bar) |
| Air Consumption /1000 Spots | 152 ft³ (4.3 Nm³) |
| Min Throat Depth | 14.96 in. (380 mm) |
| Max Electrode Force | 370 lbs (165 daN) |
| Max Elec Force (Min Depth) | 370 lbs (165 daN) |
| Electrode Stroke (Min Depth) | 0.39–2.36 in. (10–60 mm) |
| Max Throat Depth | 27.56 in. (700 mm) |
| Max Elec Force (Max Depth) | 202 lbs (90 daN) |
| Electrode Stroke (Max Depth) | 0.59–4.13 in. (15–105 mm) |
| SC Current @ Max Arm Len (kA) | 8.8 |
| Water Cooling Flow | 0.79 gpm (3 lpm) |
| Min Water Pressure | 36 psi (2.5 bar) |
| Aerial Noise | <70 dB(A) |
| Arm Ø | 1.57 in. (40 mm) |
| Electrode-Holder Ø | 0.87 in. (22 mm) |
| Electrode Taper Ø | 0.58 in. (14.8 mm) |
| Electrode Taper Standard | 4RW/1MT |
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