GF AgieCharmilles FORM 20
This model was not found in GF Machining Solutions's current lineup when we checked on 2026-10-02 (lineup page). It may be a superseded or older model; the specifications below are as we last recorded them.
Key Specifications
X Travel
Y Travel
Z Travel
Accuracy
work table size
max workpiece weight
How much does the GF AgieCharmilles FORM 20 cost?
Estimated price range
Our best estimate for a sinker edm (ram edm) in this class — not a quote from GF Machining Solutions. Configuration moves it a long way.
Overview
The AgieCharmilles FORM 20 is a small die-sinking EDM with 300 mm of X, 200 mm of Y and 250 mm of Z travel over a 500 x 320 mm work table. It is not part of GF Machining Solutions' current AgieCharmilles lineup, so it is bought used, and the figures on this page are listed values that have not been checked against a GF product page.
Its envelope is smaller than that of any current FORM model listed beside it. The current AgieCharmilles FORM P 350 offers 350 x 250 x 300 mm, so the FORM 20 gives up travel on every axis. In return the machine is light, at approx. 1,800 kg, and the table takes workpieces up to 300 kg with electrodes up to 25 kg. That electrode limit is the figure to check first: a large graphite electrode on a heavy holder can reach 25 kg sooner than expected.
All three axes run on ball screws, and the listed positioning accuracy is ±0.005 mm. The generator is the Intelligent Power Generator (IPG) in its FORM 20 configuration, working in hydrocarbon oil. Standard 2D orbital and circular orbiting are listed, which is how the machine reaches its best finish: VDI 6 with multi-stage orbiting, given as approx. Ra 0.18 µm. Orbiting also lets one electrode rough and finish a cavity by enlarging its path rather than swapping to an undersized electrode.
The control is listed as AC FORM HMI with a guided technology table system. On a used machine, check which software version is installed and whether the technology tables cover the electrode and workpiece materials you run.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 300 mm (11.8 in) |
| Y-Axis Travel | 200 mm (7.87 in) |
| Z-Axis Travel | 250 mm (9.84 in) |
| Work Table Size | 500 x 320 mm (19.7 x 12.6 in) |
| Max Workpiece Weight | 300 kg (661 lb) |
| Max Electrode Weight | 25 kg (55 lb) |
| Drive System | Ball screw (X, Y, Z axes) |
| Generator | Intelligent Power Generator (IPG) — FORM 20 configuration |
| Surface Finish | VDI 6 achievable with multi-stage orbiting (approx. Ra 0.18 µm) |
| Positioning Accuracy | ±0.005 mm |
| Dielectric | Hydrocarbon oil (dielectric fluid) |
| CNC Control | AC FORM HMI with guided technology table system |
| Orbital Motion | Standard 2D orbital and circular orbiting |
| Machine Weight | approx. 1,800 kg (3,968 lb) |
Specifications compiled from manufacturer literature and industry references. Not independently verified against a published spec sheet — confirm with the manufacturer or an authorised dealer before making a purchasing decision.
Strengths & Limitations
Strengths
- Compact 300 x 200 x 250 mm travels on a 500 x 320 mm table, for small inserts and electrodes
- Standard 2D orbital and circular orbiting reach VDI 6 (approx. Ra 0.18 µm) with multi-stage orbiting
- Ball screw drives on X, Y and Z with a listed positioning accuracy of ±0.005 mm
- Machine weight of approx. 1,800 kg suits floors that cannot take a larger sinker
- AC FORM HMI control with a guided technology table system
Limitations
- Not in GF's current AgieCharmilles lineup; any machine on offer is used
- Electrodes are limited to 25 kg and workpieces to 300 kg
- Travels of 300 x 200 x 250 mm are short of the 350 x 250 x 300 mm of the current AgieCharmilles FORM P 350
- No tool changer is listed, so electrode changes are manual unless one has been fitted
Best For
Frequently Asked Questions
01
It is not in GF Machining Solutions' current AgieCharmilles die-sinking lineup. Machines are found used. The figures on this page are listed values that have not been matched to a GF product page, so check the nameplate and control version of any machine you inspect.
02
VDI 6 with multi-stage orbiting, listed as approx. Ra 0.18 µm. Standard 2D orbital and circular orbiting are part of the machine, so the finish passes can enlarge the electrode path step by step instead of needing separate finishing electrodes.
03
Up to 300 kg for the workpiece and 25 kg for the electrode. The table is 500 x 320 mm. A heavy electrode holder counts toward the 25 kg, so weigh the full assembly before planning a large graphite electrode.
04
The AgieCharmilles FORM P 350 is a current model with 350 x 250 x 300 mm travels. The FORM 20 offers 300 x 200 x 250 mm, smaller on each axis. Buyers who need more Z for long electrodes should look at the FORM P 350 or a larger sinker.
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