Machine Comparison
DMG Mori NT 4250 DCG vs DMG Mori NT 4300 DCG
DMG Mori vs DMG Mori · Mill-Turn Machines
Summary
The DMG Mori NT 4250 DCG and DMG Mori NT 4300 DCG are both from DMG Mori's mill-turn machines lineup, making this a common upgrade or lineup decision for shops already invested in the DMG Mori ecosystem. The DMG Mori NT 4300 DCG leads in chuck size (15 in (380 mm) vs 12 in (305 mm)). The DMG Mori NT 4300 DCG shows specification advantages in 7 categories, though the DMG Mori NT 4250 DCG 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 mill-turn machine.
Specifications Comparison
| Specification | DMG Mori NT 4250 DCG | DMG Mori NT 4300 DCG |
|---|---|---|
| Rapid Traverse | 40 m/min (1,575 ipm) | 40 m/min (1,575 ipm) |
| Chuck Size | 12 in (305 mm) | 15 in (380 mm) ▲ |
| Bar Capacity | 80 mm (3.1 in) | 102 mm (4.0 in) ▲ |
| Max Turning Diameter | 700 mm (27.6 in) | 700 mm (27.6 in) |
| Max Turning Length | 1,000 mm (39.4 in) | 1,350 mm (53.1 in) ▲ |
| Machine Weight | 16,000 kg (35,274 lb) ▲ | 19,000 kg (41,888 lb) |
| Control | Fanuc 31iB5 with MAPPS | Fanuc 31iB5 with MAPPS |
| Max X Axis Travel | 610 mm (24 in) | 675 mm (26.6 in) ▲ |
| Max Y Axis Travel | 300 mm (11.8 in) / +/-150 mm | 300 mm (11.8 in) / +/-150 mm |
| Max Z Axis Travel | 1,110 mm (43.7 in) | 1,510 mm (59.4 in) ▲ |
| Main Spindle Speed | 3,500 RPM | 3,500 RPM |
| Main Spindle Power | 30 kW (40 hp) | 37 kW (50 hp) ▲ |
| Main Spindle Torque | 630 Nm | 700 Nm ▲ |
| Sub Spindle Speed | 5,000 RPM (optional) ▲ | 4,000 RPM (optional) |
| Price Range | $450,000 - $700,000 ▲ | $550,000 - $850,000 |
Advantages
DMG Mori NT 4250 DCG
- Lighter at 16,000 kg (35,274 lb), potentially easier installation and lower foundation requirements
- Superior sub spindle speed at 5,000 RPM (optional) vs 4,000 RPM (optional)
- More competitive pricing at $450,000 - $700,000 compared to $550,000 - $850,000
DMG Mori NT 4300 DCG
- Superior chuck size at 15 in (380 mm) vs 12 in (305 mm)
- Superior bar capacity at 102 mm (4.0 in) vs 80 mm (3.1 in)
- Superior max turning length at 1,350 mm (53.1 in) vs 1,000 mm (39.4 in)
- Superior max x axis travel at 675 mm (26.6 in) vs 610 mm (24 in)
- Superior max z axis travel at 1,510 mm (59.4 in) vs 1,110 mm (43.7 in)
Verdict
The DMG Mori NT 4300 DCG edges ahead on specifications in this comparison, particularly in Chuck Size and Bar Capacity. However, the DMG Mori NT 4250 DCG 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.