hbs a-12

HBS-A-12 Stud Welding Gun

ARC stud welding according to current standards.


  • Especially suitable for thicker metal sheets from approx. 2 mm
  • ISO – especially suitable for welding on ARC-ISO and Fiberfix pins
  • Automatic compensation of length tolerance of welding elements through integrated length adjustment

Process variants

  • Short cycle drawn arc welding
  • Drawn arc welding with ceramic ring or shielded gas

Technical Data

Welding range #4 to 1/2″, dia. 14 ga to 1/2” (M3 to M12, dia. 2 to 12 mm)
Stud length 0.39″ to 15.74″ (10 to 400 mm) depending on tripod
Stud material Mild steel, stainless steel
Stud type Any type or shape (special chucks if required)
Length compensation 0.12″ (3 mm) automatic
Stroke Adjustment range 0.12″ (3 mm), lockable
Spring pressure Adjustable, arresting
Welding cable 16.40′ (5 m)
Insulation class IP 20
Workplace noise level Up to 90 dB (A) may occur during welding
Operational and storage conditions According to current standards
Dimension L x W x H 7.87″ x 2.56″ x 5.51″ (200 x 65 x 140 mm) without cable, with foot piece
Weight 1.76 lbs (0.8 kg) without cable
Order No. 93-20-270 (gun including foot piece)
93-40-021 (tripod gas complete)
93-40-022 (tripod ceramic ferrule (CF) complete)



  • Rigid casing made of impact-resistant plastic
  • Torsion-resistant basic shell (casing) to accommodate all function elements and accessories (e.g. foot ring)
  • Zero-play ball linear bearing for guiding the welding piston
  • Sealed welding piston guidance
  • Ergonomic design
  • Compact dimensions
  • Integrated lift and spring-loaded adjustment
  • Stud length freely adjustable
  • Mechanical structure tested in production


  • Lock-in spring adjustment
  • Lift lockable
  • High level of security to prevent the selected settings from being changed inadvertently
  • Guidance system protected against spatters


  • Individual adjustment options for optimum welding results
  • Reproducible piston movement with minimized rebound effect for optimum welding quality via lift damper
  • Optimum handling and fatigue-free operation
  • Optimum operation also at places that are difficult to access
  • Welding on painted sheets is possible (clean, smooth, and flat surfaces and grounding required)
  • Automatic length compensation


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