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

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