ONA QX4
This model was not found in ONA Electroerosion's current lineup when we checked on 2026-10-03 . It may be a superseded or older model; the specifications below are as we last recorded them.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
Table Size
Accuracy
Repeatability
How much does the ONA QX4 cost?
Estimated price range
Our best estimate for a sinker edm (ram edm) in this class — not a quote from ONA Electroerosion. Configuration moves it a long way.
Overview
The ONA QX4 is a sinker EDM listed with 400 mm (15.7 in) of X, 300 mm (11.8 in) of Y and 350 mm (13.8 in) of Z, a 650 x 450 mm (25.6 x 17.7 in) table and a 1,000 kg (2,205 lb) workpiece limit. Electrodes can weigh up to 100 kg (220 lb).
Installation needs more thought than the travels suggest. The listed dimensions are 2,200 x 2,100 x 2,700 mm (87 x 83 x 106 in), and the 2,700 mm (106 in) height is the figure to check against ceiling, lighting and any crane path. Weight is listed at 4,200 kg (9,259 lb) and the dielectric tank holds approx. 500 L (132 gal), so ask whether the weight includes the fluid and plan for the first fill.
Performance rows are few but clear. Metal removal is listed at 300 mm³/min in graphite roughing, the finish at VDI 10 (Ra 0.4 um) achievable, positioning accuracy at 2 um and repeatability at 1 um. The generator is described as an ONA digital generator with adaptive spark control and the control as an ONA proprietary touchscreen CNC. No peak current is given.
The QX6 is listed with 650 mm (25.6 in) of X, 450 mm (17.7 in) of Y and Z and a 900 x 600 mm (35.4 x 23.6 in) table at 6,500 kg (14,330 lb), so the QX4 is the one to look at when the work fits and floor space is tight. Confirm the listed figures against the machine's manual.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 400 mm (15.7 in) |
| Y-Axis Travel | 300 mm (11.8 in) |
| Z-Axis Travel | 350 mm (13.8 in) |
| Table Size | 650 x 450 mm (25.6 x 17.7 in) |
| Max Workpiece Weight | 1,000 kg (2,205 lb) |
| Max Electrode Weight | 100 kg (220 lb) |
| Surface Finish | VDI 10 (Ra 0.4 um) achievable |
| Metal Removal Rate | 300 mm³/min (graphite roughing) |
| Positioning Accuracy | 2 um |
| Repeatability | 1 um |
| CNC Control | ONA proprietary touchscreen CNC |
| Generator | ONA digital generator with adaptive spark control |
| Dielectric Tank Capacity | Approx. 500 L (132 gal) |
| Machine Weight | 4,200 kg (9,259 lb) |
| Machine Dimensions | 2,200 x 2,100 x 2,700 mm (87 x 83 x 106 in) |
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
- 1,000 kg (2,205 lb) workpiece and 100 kg (220 lb) electrode limits on a 650 x 450 mm (25.6 x 17.7 in) table
- Positioning accuracy of 2 um and repeatability of 1 um are listed
- 350 mm (13.8 in) of Z travel, longer than the 300 mm (11.8 in) of Y
- 4,200 kg (9,259 lb), against 6,500 kg (14,330 lb) for the QX6
Limitations
- VDI 10 (Ra 0.4 um) is the finish listed; nothing finer is given
- 300 mm³/min in graphite roughing is a modest removal rate
- No peak current figure is listed for the generator
- 2,700 mm (106 in) overall height can be a problem under low ceilings
Best For
Frequently Asked Questions
01
The listed machine dimensions are 2,200 x 2,100 x 2,700 mm (87 x 83 x 106 in) and the weight is 4,200 kg (9,259 lb). The dielectric tank holds approx. 500 L (132 gal). Check the 2,700 mm (106 in) height against the building before anything else.
02
Size. The QX4 is listed with 400 mm (15.7 in) of X, 300 mm (11.8 in) of Y and 350 mm (13.8 in) of Z on a 650 x 450 mm (25.6 x 17.7 in) table. The QX6 is listed with 650 mm (25.6 in) of X, 450 mm (17.7 in) of Y and Z and a 900 x 600 mm (35.4 x 23.6 in) table, and weighs 6,500 kg (14,330 lb) against 4,200 kg (9,259 lb).
03
Positioning accuracy is listed at 2 um and repeatability at 1 um. The finish row gives VDI 10 (Ra 0.4 um) as achievable. Metal removal is listed at 300 mm³/min in graphite roughing, from an ONA digital generator with adaptive spark control.
04
Up to 1,000 kg (2,205 lb) for the workpiece and 100 kg (220 lb) for the electrode, on a table of 650 x 450 mm (25.6 x 17.7 in). Include fixtures and the electrode holder when adding up either load.
Videos
Carlos Ramirez
Surplex
Community Discussions
Links to community discussions. Summaries are editorial — visit the original thread for full context.
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