DNM Series

The DNM Series delivers the most value for your investment as the best-in-class vertical machining center fully equipped with the most standard features built-in. This powerfully productive machine features a BIGPLUS spindle, dual chip augers, FANUC 0i-M controls with DN Solutions (formerly Doosan Machine Tools) Easy Operation Package (EOP), through-spindle coolant, spindle chiller, and more. Get the machine that will give you the power to MAKE MORE.

Spindle Taper: CAT 40

Spindle RPM: 12,000 RPM

X Axis Travel: 20.5"

View DNM 4000

Spindle Taper: CAT 40

Spindle RPM: 8,000 RPM

X Axis Travel: 31.5"

View DNM 4500 4th GEN

Spindle Taper: CAT 40

Spindle RPM: 15,000 RPM

X Axis Travel: 31.5"

View DNM 4500S 4th GEN

Spindle Taper: CAT 40

Spindle RPM: 8,000 RPM

X Axis Travel: 41.3"

View DNM 5700 4th GEN

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Built for Precision, Designed for Productivity

The DNM 4500 4th Generation vertical machining center from DN Solutions elevates the proven DNM platform with enhanced rigidity, thermal control, and productivity features tailored for modern manufacturers. Equipped with a powerful direct-coupled spindle, upgraded roller linear guideways, and a compact yet robust frame, the DNM 4500 4th Gen is purpose-built for high-volume precision work in aerospace, medical, toolmaking, and general part production. Its improved thermal stability, rapid traverse speeds, and advanced monitoring systems ensure consistent accuracy, even under continuous load.

Flexible Spindle Options for Varying Application Demands

The machine comes with a choice of high-torque or high-speed spindles:

8,000 RPM Spindle: 11/15 kW (15/20 hp), 286 Nm torque – ideal for heavy-duty machining
15,000 RPM Spindle: 11/18.5 kW (15/25 hp), 118 Nm torque – ideal for high-speed finishing

Both spindle systems use a Big Plus CAT 40 taper with a direct-coupled design and oil-jacket chiller for excellent thermal control. Acceleration and deceleration times are fast (under 3.5 seconds), improving throughput while maintaining surface integrity.

Expanded Tool Capacity and Intelligent Automation

The DNM 4500 4th Gen supports:

30, 40, or 60-tool servo-type, double-arm ATCs
Tool-to-tool change time: 1.2 seconds
Chip-to-chip change time: 4.1 seconds
Max tool size: 125 mm dia. (with adjacent pots empty), 300 mm length, 8 kg weight

Tool life is extended with adaptive feedrate control and tool load monitoring, which dynamically adjust feedrates and trigger alarms in case of tool wear or breakage. The machine is also Renishaw probe-ready, supporting in-process part and tool measurement for automated cells.

Structure and Motion for Consistent Cutting Performance

The rigid Meehanite cast iron bed, wide roller linear guideways (X: 34 mm, Y/Z: 45 mm), and oversized 40 mm ball screws ensure excellent vibration dampening and cutting stability. Preloaded, pre-tensioned drive systems and directly coupled servo motors eliminate backlash.
Key motion specs:

Travels (X/Y/Z): 800 / 450 / 510 mm
Rapid traverse: 42 m/min (X/Y), 36 m/min (Z)
Positioning accuracy: ±0.008 mm (X/Z), ±0.007 mm (Y)
Repeatability: ±0.005 mm (X/Z), ±0.004 mm (Y)

Thermal Compensation and Chip Management

To ensure stability in long cycle times, the DNM 4500 includes:

Smart Thermal Monitoring: Predicts spindle expansion using speed-based algorithms
Oil-Jacketed Spindle Chiller: Reduces thermal drift
Tool Load Monitoring System: Detects overloads and breakage
Flood coolant with through-spindle cooling (215–225 psi)
Screw-type chip conveyors and 100-gallon coolant tank

These features contribute to repeatable accuracy and lights-out compatibility, even under varying shop conditions.

Compact, Operator-Friendly Machine Design

Despite its rigidity and power, the DNM 4500 4th Gen remains operator-focused:

Machine footprint: 2,220 x 2,835 mm (87 x 112 in)
Machine height: 2,980 mm (117 in)
Large sliding doors (980 mm opening) for overhead crane access
MPG pendant with 10-foot cord and magnetic mount
Portable spindle chiller, telescoping covers, eco grease lube system

The standard FANUC 0i-Plus with iHMi touchscreen simplifies operation, and built-in protections like chip shields and splash guards ensure safe use in high-duty-cycle environments.

FAQ Section

What are the main differences between the 8K and 15K spindle options?

The 8,000 RPM spindle delivers higher torque (286 Nm), ideal for heavy-duty roughing and tougher materials. The 15,000 RPM option is better for high-speed finishing and aluminum work, offering smoother surface finishes and tighter tolerances. Both include direct-coupled drives, rigid tapping, and oil-cooled jackets for thermal control.

How does Smart Thermal Monitoring improve machining accuracy?

Smart Thermal Monitoring uses algorithmic models based on spindle speed to estimate and compensate for thermal drift. It adjusts axis positions to counteract spindle elongation from heat, helping maintain precise tolerances across long machining cycles—especially beneficial for aerospace and medical parts where microns matter.

Can the DNM 4500 4th Gen be automated for lights-out production?

Yes. The machine includes probe-ready Renishaw optics, automatic tool monitoring, and adaptive feedrate control—all essential for unattended machining. Its chip evacuation system, coolant management, and durable enclosure further support lights-out workflows in high-mix environments.

What kind of tool changers are available, and how do they impact productivity?

You can choose from 30, 40, or 60-tool ATCs. The 60-tool setup is recommended for high-mix or multi-operation work. With a 1.2-second tool-to-tool change and 4.1-second chip-to-chip cycle, the machine minimizes downtime and increases spindle utilization—key for shops looking to improve throughput.

Is the DNM 4500 a good fit for tight shop floors?

Yes. Despite its rugged construction, the machine has a compact footprint of 87" x 112", making it an excellent fit for cellular manufacturing or tight production floors. Its overhead access, front chip disposal, and compact coolant system reduce operator strain and allow flexible layout design.

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