GAP-M
AI
TECHNICAL DATA
M3–M10
Ø 11 mm
0.85 kg
3 m
25 mm²
1.0–4.0 mm
DIGITAL DISPLACEMENT MEASUREMENT
Capacitor discharge using the gap method
The gap method sequence
The stud is first lifted and then moved towards the workpiece. When the ignition tip makes contact, the capacitor energy is released. The arc melts the stud end and workpiece surface. The stud plunges into the weld pool.
More about stud welding processesLift the stud
The stud is lifted from the workpiece before ignition. The lift is adjusted on the gun from 1.0 to 4.0 mm.
Ignite the arc
The stud moves towards the workpiece. When the ignition tip makes contact, the capacitor energy is released; the ignition tip melts and an arc forms.
Plunge the stud
The stud plunges into the weld pool. The stud and base material solidify to form a joint.
Features
Integrated displacement measuring system
Continuously adjustable lift
Linear ball guide
Thermoplastic housing
Welding current cable
Mechanical design
APPLICATIONS & MATERIALS
AI-generated · example
AI-generated · exampleGAP-M and CDP-M power units
CDP-66M
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
CDP-99M
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
CDP-133M
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
SUITABLE MATERIALS
For capacitor discharge welding using the gap method
Non-heat-treatable aluminium alloys
M3–M10, maximum Ø 11 mmThe usable welding range depends on the power unit, material and welding task.
COMPATIBLE WELDING ELEMENTS
The GAP-M in detail
| Gun type | GAP-M |
|---|---|
| Welding process | Capacitor discharge, gap method |
| Applications | Unalloyed and alloyed steels, and non-heat-treatable aluminium alloys |
| Welding range | M3 to M10, maximum Ø 11 mm |
| Guide | Linear ball guide |
| Displacement measuring system | Integrated; recording of stud protrusion, lift, plunge and piston speed |
| Lift adjustment | 1,0–4,0 mm, continuously adjustable using the scale on the gun |
| Vertical alignment | Manual alignment without a circular spirit level |
| Length compensation | Not fitted |
| Plunge damping | Not fitted |
| Welding current cable | 3 m / 25 mm² |
| Housing material | Glass-fibre-reinforced thermoplastic |
| Weight without cables | 0.85 kg |
Technical documents
Still unsure which option to choose?
Find the right solution for your application.
START SOLUTION FINDERFrequently asked questions
about the GAP-M
Which process does GAP-M use?
The GAP-M uses capacitor discharge stud welding with tip ignition using the gap method.
What welding range is possible?
The GAP-M welding range is M3–M10, with a maximum diameter of Ø11 mm. The usable range depends on the power unit, material and welding task.
Which materials are intended?
The gun is designed for alloyed and unalloyed steels, and non-heat-treatable aluminium alloys.
How is the lift adjusted?
The lift is continuously adjusted from 1.0 to 4.0 mm using the scale on the gun.
What does the displacement measuring system measure?
The integrated displacement measuring system records stud protrusion, lift, plunge and piston speed. In conjunction with suitable equipment technology, these values can be displayed and monitored.
Which power units are compatible?
The GAP-M is compatible with CDP-66M, CDP-99M and CDP-133M power units.
For different components and welding positions
Accessories and spare parts for GAP/GAP-M are listed in the manual spare parts catalogue. The choice depends on the gun model, welding element and installation conditions. Please specify the GAP-M version when making an enquiry.
- Accessories to suit GAP/GAP-M
- Spare parts by model and version
- Selection according to welding element and application
