hbs a 25

HBS-A-25 Stud Welding Gun (damped)

ARC stud welding according to current standards.


  • Especially suitable for thicker metal sheets from approx. 2 mm
  • Especially suitable for through-deck welding
  • Automatic compensation of length tolerance of welding elements through integrated length adjustment

Process variants

  • Drawn arc welding with ceramic ring

Technical Data

Welding range Dia. 9/16″ to 1″ (dia. 14 to 25 mm)
Stud length 0.39″ to 15.35″ (10 to 390 mm) depending on tripod
Stud material Mild steel, stainless steel
Stud type Any type or shape (special chucks if required)
Length compensation 0.35″ (9 mm) automatic
Stroke Adjustment range 0.24″ (6 mm), (0.01″ (0.25 mm) steps, arresting)
Damping Adjustable oildamper
Welding cable 4.92′, 4/0 (1.5 m, 120 mm²)
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 10.24″ x 2.91″ x 8.66″ (260 x 74 x 220 mm) without cable, with foot piece
Weight 4.41 lbs (2 kg) without cable
Order No. 93-21-295



  • Rigid casing made of impact-resistant plastic
  • Slide bearing for guiding the welding piston
  • Sealed welding piston guidance
  • Ergonomic design
  • Compact dimensions
  • Lift adjustment
  • Stud length is freely adjustable
  • Mechanical structure tested in production
  • Reduced heating of the stud welding gun body thanks to externally positioned welding current cable


  • Lock-in lift adjustment
  • A 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
  • Welding on painted sheets is possible (clean, smooth, and flat surfaces and grounding required)
  • Ideal for high clock sequences with big diameters
  • Automatic length compensation
  • Damped plunging in the weld pool with installed oil damper


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