Machine Comparison
ONA QX4 vs ONA QX6
ONA Electroerosion vs ONA Electroerosion · Sinker EDM
Summary
The ONA QX4 and ONA QX6 are both from ONA Electroerosion's sinker edm lineup, making this a common upgrade or lineup decision for shops already invested in the ONA Electroerosion ecosystem. The ONA QX6 leads in x travel (650 mm (25.6 in) vs 400 mm (15.7 in)). The ONA QX6 shows specification advantages in 9 categories, though the ONA QX4 may still be the better choice depending on your shop's specific needs and the type of work you run. Both machines are proven performers in production environments and represent solid investments for shops in the market for a sinker edm.
Specifications Comparison
| Specification | ONA QX4 | ONA QX6 |
|---|---|---|
| X-Axis Travel | 400 mm (15.7 in) | 650 mm (25.6 in) ▲ |
| Y-Axis Travel | 300 mm (11.8 in) | 450 mm (17.7 in) ▲ |
| Z-Axis Travel | 350 mm (13.8 in) | 450 mm (17.7 in) ▲ |
| Table Size | 650 x 450 mm (25.6 x 17.7 in) | 900 x 600 mm (35.4 x 23.6 in) ▲ |
| Accuracy | 2 um | 2 um |
| Repeatability | 1 um | 1 um |
| Control | ONA proprietary touchscreen CNC | ONA proprietary touchscreen CNC |
| Max Workpiece Weight | 1,000 kg (2,205 lb) | 2,000 kg (4,409 lb) ▲ |
| Max Electrode Weight | 100 kg (220 lb) | 200 kg (441 lb) ▲ |
| Surface Finish | VDI 10 (Ra 0.4 um) achievable | VDI 10 (Ra 0.4 um) achievable |
| Metal Removal Rate | 300 mm3/min (graphite roughing) | 400-500 mm3/min (graphite roughing) ▲ |
| Generator | ONA digital generator with adaptive spark control | ONA digital generator with adaptive spark control |
| Dielectric Tank Capacity | Approx. 500 L (132 gal) | Approx. 800 L (211 gal) ▲ |
| Machine Weight | 4,200 kg (9,259 lb) | 6,500 kg (14,330 lb) ▲ |
| Price Range | $90,000 - $160,000 ▲ | $150,000 - $250,000 |
Advantages
ONA QX4
- More competitive pricing at $90,000 - $160,000 compared to $150,000 - $250,000
- Backed by ONA Electroerosion's dealer and service network for parts and support
- Mold shops sinking small to medium injection mold inserts, core pins, and cavity details
ONA QX6
- Greater x travel of 650 mm (25.6 in) accommodates larger workpieces
- Greater y travel of 450 mm (17.7 in) accommodates larger workpieces
- Greater z travel of 450 mm (17.7 in) accommodates larger workpieces
- Superior table size at 900 x 600 mm (35.4 x 23.6 in) vs 650 x 450 mm (25.6 x 17.7 in)
- Superior max workpiece weight at 2,000 kg (4,409 lb) vs 1,000 kg (2,205 lb)
Verdict
The ONA QX6 edges ahead on specifications in this comparison, particularly in X Travel and Y Travel. However, the ONA QX4 remains competitive and may be the better choice depending on price, dealer support in your area, or specific workholding and tooling considerations. Both are capable machines — the best decision comes from running your actual parts and evaluating total cost of ownership including tooling, training, and service.