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Stud welding gun · Capacitor discharge

Contact-M

CONTACT STUD WELDING GUNHand-held contact welding gun for capacitor discharge stud welding with tip ignition. Integrated displacement measurement displays movement and displacement parameters on compatible CDP-M power units.
Integrated displacement measurement
Contact method
Hand-held
For CDP-M power units
AT A GLANCE

TECHNICAL DATA

M3–M10

Welding range

Ø 11 mm

Maximum diameter

0.85 kg

Weight without cables

6.5 m

Welding current cable

25 mm²

Cable cross-section

Continuously variable

Adjustable spring pressure
RECORDING AND MONITORING

DIGITAL DISPLACEMENT MEASUREMENT

The integrated displacement measuring system records the movement of the welding stud. When connected to a compatible CDP-M power unit, the relevant values are shown on the display. Optional electrical process monitoring can further improve process reliability.
Stud protrusion
Lift
Plunge
Speed
CDP-66M display C01
WELDING PROCESS

Capacitor discharge welding using the contact method

The Contact-M is designed for capacitor discharge stud welding using the contact method. Before triggering the weld, the stud is placed on the workpiece with its ignition tip in contact with the surface.

A short process for thin sheets

When the weld is triggered, the energy stored in the capacitors is released. The ignition tip melts and generates an arc. The stud end and workpiece surface melt, after which spring pressure drives the stud into the weld pool.

More about stud welding processes

Position the stud

The welding stud is held in the stud chuck and positioned on the workpiece with its ignition tip.

Ignite the arc

The capacitor energy is released. The ignition tip melts and an arc forms.

Plunge the stud

Spring pressure drives the stud into the weld pool. The stud and base material solidify to form a joint.

PRECISE AND RELIABLE

Features

The Contact-M combines the compact design of a manual contact welding gun with digital recording of the mechanical welding parameters.
Integrated displacement measuring system
Recording of stud protrusion, lift, plunge and piston speed.
Repeatable results
The displacement parameters can be read and checked on the display of the connected power unit.
Ergonomic handling
The housing shape supports a secure grip and reduces fatigue during manual work.
Robust industrial housing
The glass-fibre-reinforced thermoplastic housing is designed for industrial use.
Large cable cross-section
The 6.5-metre welding current cable with a cross-section of 25 mm² reduces cable losses, even during repeated welds.
Extensive accessories
Different chucks, feet and positioning solutions allow the gun to be adapted to various applications.
IDEAL FOR MANY INDUSTRIES

APPLICATIONS & MATERIALS

Copper-coloured stud welded onto a sheet-metal enclosure
Control cabinet and enclosure manufacturing
01
Control cabinet and enclosure manufacturing
General sheet metal fabrication
02
General sheet metal fabrication
Electrical engineering / electronics
03
Electrical engineering / electronics
Equipment manufacturing, including domestic and commercial kitchen equipment
04
Equipment manufacturing, including domestic and commercial kitchen equipment
Facade construction and decorative metalwork
05
Facade construction and decorative metalwork
Medical and laboratory equipment
06
Medical and laboratory equipment
Compatible power units

CONTACT-M and CDP-M as a matched system

The Contact-M displacement measuring system is activated on compatible CDP-M series power units. The choice of unit depends on the stud diameter, material and required features.
CDP-66M power unit on a dark background

CDP-66M

Capacitor discharge

Compact power unit for capacitor discharge applications and steel or stainless steel studs up to M8.

  • Digital displacement measurement
  • Stud range M3 to M8
  • 4-inch graphic display
View CDP-66M
CDP-99M power unit on a dark background

CDP-99M

Capacitor discharge

Power unit for capacitor discharge applications up to M10 with optional process monitoring and multi-station technology.

  • Digital displacement measurement
  • Stud range M3 to M10
  • Optional Switch-4
View CDP-99M
CDP-133M power unit on a dark background

CDP-133M

Capacitor discharge

High-performance CDP-M version with switchable capacitance for demanding manual and automated applications.

  • Digital displacement measurement
  • Stud range M3 to M10
  • Optional process monitoring
View CDP-133M
Uncoated steel sheets and brushed stainless steel on a metal surface.
MATERIALS

SUITABLE MATERIALS

UNALLOYED STEELS
For the contact method
ALLOYED STEELS
Including stainless steel
WELDING RANGE
M3–M10, maximum Ø 11 mmThe usable welding range depends on the power unit, material and welding task.
SUITABLE FOR CAPACITOR DISCHARGE WELDING

COMPATIBLE WELDING ELEMENTS

The CONTACT-M processes welding elements with an ignition tip using the contact method. The welding element and stud chuck are selected to suit the material, dimensions and welding task.
VIEW COMPATIBLE WELDING ELEMENTS →
PT threaded stud, UT pin and copper-coloured IT internally threaded bush with an ignition tip on a metal surface.
TECHNICAL DETAILS

The CONTACT-M in detail

Gun typeContact-M
Welding processCapacitor discharge, contact method
ApplicationsUnalloyed and alloyed steels
Welding rangeM3 to M10, maximum Ø 11 mm
GuidePlain bearing guide
Displacement measuring systemIntegrated; recording of stud protrusion, lift, plunge and piston speed
Lift adjustmentNot fitted
Spring pressureContinuously adjustable
Vertical alignmentManual alignment without a circular spirit level
Length compensationNot fitted
Plunge dampingNot fitted
Welding current cable6,5 m, 25 mm²
Housing materialGlass-fibre-reinforced thermoplastic
Housing colourGrey
Weight without cables0.85 kg
Downloads & Solution Finder

Technical documents

All key information at a glance in the PDF.
Data sheet (German)

Still unsure which option to choose?

Find the right solution for your application.

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Technical questions

Frequently asked questions
about the Contact-M

What is the difference between Contact and Contact-M?

The Contact-M has an integrated displacement measuring system. This records stud protrusion, lift, plunge and piston speed and displays them on a compatible power unit.

Which welding process does the Contact-M use?

The Contact-M is designed for capacitor discharge stud welding with tip ignition using the contact method.

Which stud sizes can be welded?

The stated welding range is M3 to M10, with a maximum welding diameter of Ø 11 mm. The permissible configuration also depends on the material and welding task.

Which materials is the Contact-M designed for?

According to the product overview, the Contact-M is designed for unalloyed and alloyed steels.

Which units is the Contact-M compatible with?

The Contact-M can be operated with CDP-66M, CDP-99M and CDP-133M power units. The final choice depends on the stud diameter, material and required system features.

Which accessories are available?

The range includes stud chucks, feet, foot rings, positioning tubes, centring solutions, extensions and components for special welding elements and component geometries.

For different components and welding positions

accessories and spare parts

Different stud chucks, feet, positioning tubes and centring solutions are available for Contact and Contact-M. These allow the gun to be adapted to different stud types, bends, templates and customer-specific applications.

Open spare parts catalogue (German) Enquire about accessories
  • Stud chucks and collets
  • Feet and foot rings
  • Positioning and centring tubes
  • Stud chuck extensions
  • Sound insulation tubes
  • Application-specific custom solutions
Made in Germany
Personal advice
Spare parts & service
Automation expertise