Features
Chrome-Copper Electrode Holders
The chrome-copper electrode holders, designed for straight and angled fittings, provide a longer life span for consumables and heavy-duty applications.
Adjustable Electrode Performance
The electrode stroke and force can be adjusted to suit your needs using an air filter reducer fitted with a gauge. It also comes with electrode speed control valves and shock absorbers for the cylinders to minimise the strain on the electrodes, and an air discharger silencer reduces the noise levels.
Built to Last
The transformer, arms, and electrodes are water-cooled, with a semi-automatic drainage system. An epoxy resin coating on the transformer provides a longer working time and lifespan. It also comes fitted with a TECNA TE101 microprocessor control unit.
Two-Stage Electric Foot Pedal
The two-stage electric foot pedal offers both its typical use in automatic and single spot mode, as well as the ability for the operator to align the pieces and weld them once they are properly positioned.
Switch Between Time-Current Settings
With the pre-arrangement for adding a second electric two-stage foot pedal, operators can easily switch between two different time-current settings, making it ideal for executing different welding processes on the same piece.
Adjustable Arms
The arm lengths are adjustable, allowing for more flexibility while working.
Eliminate Oil Mist
The lubrication-free, air-operated cylinder eliminates the presence of oil mist.
Specifications
Primary Input Voltage
415V Three-Phase
Supply Plug
Unplugged (20A Recommended)
Nominal Power @ 50% (kVA)
25
Maximum Welding Power (kVA)
68
No Load Secondary Voltage (V)
4.6
Maximum Short Circuit Current (kA)
18
Maximum Welding Current on Light Alloys (kA)
16.3
Maximum Welding Current on Steel (kA)
14.4
Thermal Current 100% (A)
3800
Cables Section L=10m (mm2)
16
Cables Section L=30m (mm2)
16
Delayed Fuses (A)
50
Short Circuit Current With L Maximum (kA)
13
Arm Diameter (mm)
40
Maximum Arm Gap (mm)
440
Minimum Arm Gap (mm)
125
Electrode Holder Diameter (mm)
22
Electrode Cone Diameter (mm)
14.8
Compressor Air Supply (bar)
6.5
Air For 1000 Spots (Nm3)
4.3 @ 6 bar
Water Cooling (L/min)
3.7
Noise Level (dBA)
<70
Weight (kg)
143
Downloads
TECNA 4640, 4643 & 4648 Spot Welder Manual
1.59 MB
TECNA 4648 Info Sheet
1.27 MB
Spot Welders Comparison
0.66 MB