DMG Mori NZX 4000
Key Specifications
Max Workpiece ⌀
max workpiece length
through spindle bore a
through spindle bore b
through spindle bore c
spindle power 30min
Overview
The DMG Mori NZX 4000 is the largest member of the NZX family, built for heavy-duty turning of large-diameter and long workpieces. Maximum workpiece diameter is 660 mm (26 inches) with turning length up to 3,000 mm (118 inches), putting it firmly in the large-part production category. The through-spindle bore comes in three sizes: Type A at 145 mm, Type B at 185 mm, and Type C at 285 mm, letting you match the machine to your specific bar stock or tube requirements.
The main spindle uses a beltless gear drive delivering 37 kW (50 HP) at 30-minute rating and 30 kW (40 HP) continuous. The rotary tool spindle produces 117 Nm (86.2 ft-lb) of torque, which is serious milling capability for a turning center of this size. The machine runs two turrets as standard, with turret one carrying BMT milling and Y-axis capability and turret two handling turning operations.
The trapezoidal bed design is 50 percent more rigid than the previous model, with 1.5 times wider slideways on all axes. X-axis travel is 140 mm and Z-axis runs up to 3,100 mm. This structural rigidity matters when you are taking heavy cuts on large-diameter workpieces where deflection and chatter are constant concerns.
Control is ERGOline with CELOS on MAPPS from Mitsubishi, featuring the 21.5-inch multi-touch interface. Each turret holds 12 or 8 tool pockets depending on configuration.
The NZX 4000 competes with the Mazak QUICK TURN 450, Okuma LB45II, and Doosan Puma 4100 in the large turning center segment. Its combination of through-spindle bore options, BMT milling, and Y-axis capability makes it one of the most versatile large turning centers available. Specs sourced from DMG Mori published data and industry publications.
Full Specifications
| Parameter | Value |
|---|---|
| Max Workpiece Diameter | 660 mm (26 in) |
| Max Workpiece Length | 3,000 mm (118.1 in) |
| Through Spindle Bore A | 145 mm (5.7 in) |
| Through Spindle Bore B | 185 mm (7.3 in) |
| Through Spindle Bore C | 285 mm (11.2 in) |
| Spindle Power 30min | 37 kW (50 HP) |
| Spindle Power Continuous | 30 kW (40 HP) |
| Milling Torque | 117 Nm (86.2 ft-lb) |
| X Axis Travel | 140 mm (5.5 in) |
| Z Axis Travel | 3,100 mm (122 in) |
| Turrets | 2 (12 or 8 tool pockets) |
| Tool Mounting | BMT (Built-in Motor Turret) |
| Bed Design | Trapezoidal (50% more rigid vs previous model) |
| CNC Control | ERGOline with CELOS on MAPPS (Mitsubishi) |
| 660 Mm | 26 in. |
| 3000 Mm | 118.1 in. |
| 385 Mm | 15.2 in. |
| 140 Mm | 5.5 in. |
| 3100 Mm | 122 in. |
| Customer Benefits | Before the actual machining, the machining status can be checked by using a graphic |
Specifications sourced from us.dmgmori.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 660 mm max workpiece diameter and 3,000 mm turning length handle the largest production turning jobs in the NZX family
- Three through-spindle bore options from 145 mm to 285 mm let you match the machine to your specific bar or tube work requirements
- 50 HP beltless gear drive spindle with trapezoidal bed delivers the power and rigidity needed for aggressive heavy cuts
- BMT milling with 117 Nm of torque provides serious secondary milling capability without needing a separate milling machine
- 50 percent more rigid bed structure compared to the previous model reduces chatter and deflection on large-diameter work
- Y-axis on turret one enables off-center milling, drilling, and tapping on large workpieces
Limitations
- Starting around $400K, this is a substantial investment that requires consistent large-part production to justify
- Machine footprint is significant and requires proper foundation planning for the heavy structure
- Two turrets rather than three limits simultaneous cutting options compared to the smaller NZX models
- Large machine size means longer warm-up times and more sensitivity to thermal variation in the shop environment
- Limited used market availability since fewer NZX 4000 units are sold compared to the smaller NZX models
Best For
Frequently Asked Questions
01
New pricing runs $400,000-$650,000 depending on through-spindle bore type, turret configuration, and optional Y-axis. The Type C bore at 285 mm commands the highest price. Used units are rare due to lower production volumes compared to the NZX 2000 and 2500.
02
Type A (145 mm) works for shops primarily doing chuck work with occasional bar feeding. Type B (185 mm) covers most standard tube and pipe work. Type C (285 mm) is for large-bore tube turning and oil field pipe work. Choose based on the largest bar or tube diameter you regularly run.
03
Both are large turning centers in a similar size class. The NZX 4000 offers three through-spindle bore options and BMT milling technology. The Mazak QT-450 has the MAZATROL control with conversational programming. Performance is comparable; the decision typically comes down to control preference and dealer relationship.
04
Yes, within the bar capacity limits of the selected through-spindle bore. However, bar feeders for 145-285 mm bore diameters are specialized and expensive. Most NZX 4000 installations use chuck loading with automation rather than bar feeding for production runs.
05
The NZX 4000 requires a reinforced concrete foundation designed for the machine weight and dynamic cutting loads. Consult DMG Mori installation specifications for exact depth, thickness, and rebar requirements. Plan for adequate crane access during installation since the machine and its components are heavy.
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