NH4000 DCG - High-Precision Horizontal Machining Center - Presenting the ideal machining center

Nov 4, 2026

NH4000 DCG is a high-precision horizontal machining center featuring a 400 mm square pallet and DCG (Driven at the Center of Gravity) vibration control technology. Box-in-Box construction supports balanced guidance of moving parts, enabling higher speed and acceleration with improved servo traceability. Optional direct-drive motor provides backlash-free rotary drive. The system targets stable machining by reducing positioning and rotational vibration, protecting surface quality and roundness, extending tool life, and improving acceleration performance.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages20

Reading Time50 min

AccessFree to download

Principal mechanisms

Basic structure

Driven at the Center of Gravity

Features of DCG

Space-saving design

Spindle and DDS motor

Tool rigidity and spindle cooling

Tool, Boring

[www.dmgmori.com](www.dmgmori.com) NH4000 DCG High-Precision Horizontal Machining Center NH4000 DCG Presenting the ideal machining center. The NH4000 DCG is a high-precision horizontal machining center equipped with a 400 mm (15 .7 in.) square pallet. It employs the DCG (Driven at the Center of Gravity) technology for vibration control and the Box-in-Box construction for excellent balance, and can achieve backlash-free rotary drive by using the optional direct drive motor. It is a high-performance machine incorporating all the features demanded of a horizontal machining center, including high speed, high precision, chip disposal and ease of maintenance, while achieving both a space saving design and a large work envelope. 2 NH4000 DCG NH4000 DCG 3 Principal mechanisms Basic structure Box-in-Box Construction Moving parts are guided and driven with perfect balance at their center of gravity by the “Box-in-Box”Construction, which supports the saddle at both ends. At the same time, we have improved the servo motor’s traceability, allowing higher speed and greater acceleration than ever before. ■ Rapid traverse rate (1,968 .5 ipm) ■ Cutting feedrate (1,968 .5 ipm) High-acceleration specifications OP X-axis 1.1 G {10.8 m/s2 (35.4 ft/s2)} Y-axis 1.2 G {11.7 m/s2 (38.4 ft/s2)} Z-axis 1.1 G {10.4 m/s2 (34.1 ft/s2)} Driven at the Center of Gravity Vibration Controlled Original technology Our DCG (Driven at the Center of Gravity) technology controls vibration, which is one of the main enemies of high speed and high precision, by driving structural parts at their center of gravity. For positioning, machines with DCG virtually eliminate vibration, while machines without DCG continue to vibrate for a long time. DCG controls the rotational vibration which appears at every acceleration start point, and which is proportional to the distance between the drive point and the center of gravity. This prevents deterioration of the quality of the machined surface. Residual vibration comparison 10 8 6 4 2 0 -2 -4 -6 -8 -10 Rapid traverse rate 100%(stopped in the Z-axis direction) 0.4 0.45 0.5 0.55 0.6 ─Machining by DCG advanced technology Time (sec.)─Machining by a conventional machine Vibration amplitude (μm) Machining by DCG advanced technology Machining by a conventional machine ■ Features of DCG ・Improved surface quality ・Improved roundness ・Outstanding acceleration ・Longer tool life 4 NH4000 DCG |
Space-saving design
Offering both space-saving design and a large work | | | | --- | --- | --- | |
envelope, reducing the required floor space by 11. 1% compared to existing machines.
■ Machine height
2,711 mm (106.7 in.)

■ Machine width×Machine depth

| | | | 2,397×4,004 mm (94.4× 157.6 in.) | | | |
Travel
630 mm (24.8 in.)

560 mm (22.0 in.)

Y-axis

560 mm

(22.0 in.) |
Working area | | | |
■ Max. workpiece height | ■ Max. workpieceswing diameter
630 mm (24.8 in.)
560 mm (22.0 in.) OP <3-station turn-type APC>
| | | 900 mm (35.4 in.) 800 mm (31.4 in.) OP <3-station turn-type APC>

■ Pallet loading capacity
2-station turn-type APC: 400 kg (880 lb.) 3-station turn-type APC: 300 kg (660 lb.) OP
| | Principal mechanisms |
Spindle | | | | | | | | --- | --- | --- | --- | --- | --- | --- | |
For the spindle drive, we use the high-efficiency DDS (Direct Drive Spindle) motor which extracts full power over a wide range, from high-speed machining to heavy-duty cutting. This machine handles all types of materials from steel to aluminum and other non-ferrous metals. | | | ■ Max. spindle speed NH4000 DCG
14,000 min-1 | | 14,000 min-1 OP

20,000 min-1
OP
| | | | | | ■ Tool clamp power

Improved tool clamping force | | | | | | | | Usi

FAQs

What is DCG technology in the NH4000 DCG?

DCG (Driven at the Center of Gravity) controls vibration by driving structural parts at the center of gravity, reducing positioning and rotational vibration to protect machined surface quality.

What are the key advantages of Box-in-Box construction?

Box-in-Box construction guides and drives moving parts at their center of gravity, improving balance and allowing higher speed and acceleration with enhanced servo traceability.

How does the NH4000 DCG support space-saving while maintaining a large work envelope?

It offers both space-saving design and a large work envelope, reducing the required floor space by 11.1% compared to existing machines.

Nov 4, 2026

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