DN Solutions DNM 4000
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Spindle Taper
Table Size
Overview
The DN Solutions DNM 4000 is the entry point to DN Solutions' wildly successful DNM series — a lineup with over 30,000 machines installed globally. The 4000 is the most compact model in the family, with axis travels of 520 x 400 x 480 mm (20 x 16 x 19 in) and a 650 x 400 mm table. It's a small VMC, but it's built with the same box-way construction and structural DNA as the larger DNM models, giving it cutting rigidity that punches well above its size class.
The spindle runs at 12,000 RPM with an ISO 40 taper and 117 Nm of torque. That's a strong spindle for a compact machine — the 117 Nm torque figure matches what many mid-size VMCs deliver, letting you run aggressive feeds in steel and cast iron despite the smaller footprint. The box-way construction provides the rigidity backbone that makes those feeds possible without chatter, which is where lighter linear-guide machines in this size class fall short.
At 3,300 kg and with a 400 kg table load capacity, the DNM 4000 is easy to install and accommodates most small-to-medium workpieces. The FANUC 0i-Plus control is the same platform running across the entire DNM lineup, so operators transition seamlessly between the 4000 and larger DNM models. For small job shops, tool rooms, and production cells handling parts within the 520 x 400 mm envelope, the DNM 4000 delivers proven DN Solutions reliability and box-way performance at the most accessible price point in the lineup.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 520 mm (20 in) |
| Y-Axis Travel | 400 mm (16 in) |
| Z-Axis Travel | 480 mm (19 in) |
| Max Spindle Speed | 12,000 RPM |
| Spindle Torque | 117 Nm (86 ft-lb) |
| Spindle Taper | ISO 40 (BT40) |
| Table Size | 650 x 400 mm (26 x 16 in) |
| Table Load Capacity | 400 kg (882 lb) |
| Machine Weight | 3,300 kg (7,275 lb) |
| CNC Control | FANUC 0i-Plus with iHMI |
| Max Spindle Speed | 12000 r/min |
| X Axis Travel Distance | 520 mm |
| Y Axis Travel Distance | 400 mm |
| Metric | IMPERIAL |
| Travels | X-Axis Travel DistanceY-Axis Travel DistanceZ-Axis Travel Distance |
| Feed Rates | X-Axis Rapid TraverseY-Axis Rapid TraverseZ-Axis Rapid Traverse |
| Main Spindle | Max. Spindle SpeedMax. Spindle PowerMax. Spindle TorqueTool Taper |
| Table | Table LengthTable WidthMaximum Workpiece weight |
| Dimensions | LengthHeightWidthWeight |
| Favorites | DNM 750/50 II |
Specifications sourced from dn-solutions.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Box-way construction delivers superior cutting rigidity compared to linear-guide VMCs in this compact size class
- 117 Nm spindle torque matches many mid-size VMCs, enabling aggressive feeds in steel despite the small footprint
- 12,000 RPM spindle speed handles aluminum work efficiently while maintaining strong steel-cutting capability
- Part of the 30,000+ installed DNM platform — proven reliability, readily available parts, experienced service
- 3,300 kg weight means straightforward installation without special foundations
- FANUC 0i-Plus control maintains consistency across the entire DNM lineup for operator flexibility
Limitations
- 520 x 400 x 480 mm travels limit part size — many shops will outgrow this machine quickly
- 650 x 400 mm table is tight for complex fixturing on larger workpieces
- 400 kg table load capacity is modest for heavy steel and fixture combinations
- Box-way construction requires periodic maintenance (lubrication, adjustment) versus sealed linear guides
Best For
Frequently Asked Questions
01
New DNM 4000 machines run $55,000-$85,000. The base machine starts around $55,000-$65,000 with the 12K RPM spindle and standard ATC. Adding through-spindle coolant, probing, chip conveyor, and fourth-axis prep pushes pricing to $75,000-$85,000. Used Doosan-era DNM 400 machines sell in the $20,000-$40,000 range.
02
The DNM 4500 significantly expands the work envelope to 800x450x510mm (vs 520x400x480mm) and increases the table to 1,000x450mm. The 4500 also adds more spindle options (8K, 12K, 15K RPM). The DNM 4000 is for genuinely small parts; the 4500 covers the mid-range that most job shops need.
03
It's a solid choice if your part work fits within the 520x400mm envelope. The proven DNM platform, FANUC control, and box-way construction provide a reliable foundation. However, many startup shops outgrow 520mm X-travel quickly — spending a bit more on the DNM 4500 gives you significantly more room to take on diverse work.
04
The DNM 4000 has box-way construction versus the Haas Mini Mill's linear guides, giving it an edge in heavy-cutting rigidity. The Haas has a slightly larger work envelope and a lower base price. Both run on similar control platforms. For steel and cast iron work, the DNM 4000's box ways provide a noticeable advantage.
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