Stud Welding Machines | Stud Welder Comparison
At BEARFIX we offer all possible technologies for stud welding, covering every sector: industrial, automotive, naval, construction, renewable energies… We also have CNC machines to automate these welds. This technical guide will help you select the most suitable solution for your projects.
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1. Capacitor Discharge (CD)
LBS and PRO-C Series
Technology used for stud welding on cold-rolled thin surfaces.
Main Models
- LBS 75/80/90/130
- PRO-C 750/1000/1500
Key Advantages
- Ultra-fast cycles (1-3 ms)
- Ideal for thin sheets
- Low energy consumption
Typical Applications
- Metal furniture
- Appliances
- Elevators
- Insulation
2. Short Cycle Arc (SC)
LBH and PRO-I Series
Versatile solution for stud welding on galvanized surfaces, with medium cycle times and higher process control.
Main Models
- LBH 410
- LBH 710
- LBH 910
- PRO-I 1300
Key Advantages
- Adjustable times (5–950 ms)
- Protective gas option
- Robust construction
Typical Applications
- Automotive
- Inverters
- Electrical cabinets
- Urban furniture
3. Ceramic Arc and Inverter (ARC)
PRO-D and PRO-I Series
Advanced technology for the most demanding applications with maximum precision and control on thicker hot-rolled surfaces.
Main Models
- PRO-D 1600/2200/2800
- PRO-I 1300/2200/2800
Key Advantages
- Larger weld diameter (up to 25mm)
- Inverter technology (PRO-I)
- Advanced parameter monitoring
Typical Applications
- Heavy construction
- Building and bridge structures
- Wind energy
- Offshore applications
Technical Specification Comparison Table
| Feature | Capacitor Discharge | Short Cycle Arc | Ceramic/Inverter Arc |
|---|---|---|---|
| Weld Time | 1–3 ms | 5–950 ms | 5–3000 ms |
| Max Diameter | 10mm | 8mm | 25mm |
| Max Current | – | 900A–1050A | 3150A (PRO-I) |
| Control | Basic electronic | Microprocessor | Advanced microprocessor |
| Weight (base model) | 10–20kg | 27–37kg | 31–316kg |
| Multipistol | Yes | Yes | No (PRO-SPLIT) |
| Energy Efficiency | High | Medium | High (Inverter) |
Which Technology to Choose?
Capacitor Discharge
Capacitor discharge welding is based on releasing energy stored in a bank of capacitors, allowing for a very fast fusion of 2 to 3 ms. Due to the rapid process, it’s ideal for thin materials where you don’t want to mark the reverse side. The studs have a special pointed preparation.
Short Cycle Arc
Short cycle arc welding follows the same principle as conventional arc welding but with much shorter exposure times managed by a microprocessor. It’s done without shielding and is suitable for thin to medium thicknesses where high welding speed is essential. Thin sheets may show reverse marking. The studs have a special taper.
Ceramic Arc & Inverter
Arc stud welding is the most widely used process due to its reliability. Its deep penetration makes it suitable for thicker sheet metals. It’s used
Con más de 40 años de experiencia en el sector de la soldadura y las técnicas de unión Bearcat extiende sus conocimientos a todos los sectores industriales: automoción, ingeniería de ferrocarriles, ingeniería industrial, industria naval, obra civil.
