HBS-CD-3101 Stud Welding Unit (with digital display)

CD stud welding (capacitor discharge welding) according to current standards.

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  • Especially suitable for thin sheets (at least 0.5 mm)

Process variants

  • Contact welding
  • Gap welding

Technical Data

Welding range #8 to 7/16″, dia. #8 to 3/8” (M4 to M10, dia. 4 to 10 mm)
Welding material Mild steel, stainless steel, aluminum and brass
Welding rate 5 to 20 studs/min (depending on application and stud dia.)
Capacitance 132,000 F
Welding time 1 to 3 msec
Energy 3,200 Ws
Charging voltage 50 to 220 V (stepless voltage regulation)
Primary power 115/230 V, 50/60 Hz, 10 AT
Power source Capacitor
Cooling type F (temperature controlled cooling fan)
Protection class IP 21
Operational and storage conditions According to current standards
Dimension L x W x H 20.08″ x 7.09″ x 9.84″ (510 x 180 x 250 mm) without handle
Weight 48.50 lbs (22 kg)
Order No. 92-12-0311



  • Microcontroller – for precise process times, optimal functional reliability and maximum operating convenience
  • Function monitoring – automatic function test following power-up; monitoring of all internal system functions
  • Display of error codes – on digital display
  • Library function – automatic specification of charging voltage through selection of stud diameter according to welding range; fine adjustment via arrow keys


  • Extremely easy to operate
  • Compact
  • Robust – metal housing withstands rough treatment in shop and on site


  • With integrated mains filter (protection against voltage peaks)
  • Optimal for construction sites with large mains voltage fluctuations – use even with critical voltage supply (- 25% + 20%)
  • EMC test
  • High-voltage test with log
  • Retriggering lock-out – prevents welding on a welding element that has already been set
  • Thermal monitoring of transformer and internal temperature of stud welding unit- automatic shutdown in case of overheating
  • Temperature-regulated ventilator – reduces noise and dust in the stud welding unit (greater system reliability)
  • Optimal protection against external interferences
  • Protection class IP 21


  • Display – infinitely adjustable power setting (charge reversal via set-point switch); easy monitoring of all functions via LED displays
  • Powerful – built-in power reserves
  • Trouble-free changing of welding voltage polarity possible by reconnecting welding current and ground cables
  • Use of special capacitors (developed for stud welding)

Suitable Welding Guns

  • C 08
  • CA 08


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