The Ralli Wolf RDA-120 is a drawn arc stud welding machine controlled by an integrated micro controller, built for heavy-duty industrial stud welding applications. With a monochrome graphical display for easy monitoring and control, it welds studs from M3 to M12 with a wide current range up to 800 Amp and precise welding times from 3ms to 500ms. The machine supports both ferrule (Forul) and ferrule-less welding processes using the same torch, offering flexibility across different job requirements. Running on a 415V 3-phase supply, the RDA-120 is engineered for larger, higher-strength stud welding jobs than capacitor discharge machines can handle. Backed by Ralli Wolf's 60+ years of manufacturing expertise and ISO 9001:2015 certification, it delivers robust, reliable performance for demanding industrial applications.
KEY FEATURES
- Drawn arc technology controlled by integrated micro controller
- Monochrome graphical display for easy operation and monitoring
- Wide stud welding range from M3 to M12
- High current capacity up to 800 Amp
- Precise welding time control from 3ms to 500ms
- Supports both with-ferrule and without-ferrule welding in the same torch
- 3-meter torch length for flexible reach
TECHNICAL SPECIFICATION
| Specification | Value |
|---|---|
| Model | RDA-120 |
| Technology | Drawn Arc Controlled, integrated with micro controller |
| Display | Monochrome Graphical Display |
| Input Supply | 415V, 50Hz, 3 Phase |
| Gun Voltage | 50V DC |
| Welding | M3 to M12 Stud |
| Range | 3mm to 12mm |
| Welding Process | With Ferrule and Without Ferrule in same torch |
| Welding Time | 3ms to 500ms |
| Current | Up to 800 Amp |
| Torch Length | 3 meters |
| Dimensions | 18" x 18" x 12" |
| Net Weight | 55 kg (without gun) |
APPLICATION
- Heavy industrial stud welding
- Structural steel fabrication requiring larger stud sizes (up to M12)
- Shipbuilding and construction projects
- Applications requiring high current, high-strength stud welds
- Jobs needing both ferrule and ferrule-less welding flexibility
- 3-phase industrial power environments
WHY CHOOSE THIS (Ralli Wolf RDA-120)
- Handles larger stud sizes (up to M12) than typical capacitor discharge stud welders
- High current capacity up to 800 Amp supports heavy-duty structural welding
- Monochrome graphical display makes it easy to monitor and control welding parameters
- Precise welding time control (3ms–500ms) ensures consistent, repeatable weld quality
- Flexible torch supports both with-ferrule and without-ferrule welding processes
- Micro controller integration ensures accurate, drawn arc welding performance
- Backed by Ralli Wolf's 60+ years of trusted engineering and ISO 9001:2015 certification
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