DN Solutions DNM 750 50 II

$150,000 - $210,000 Updated 2026-03-19

Key Specifications

Max Spindle

8,000 RPM

Spindle Taper

ISO 50 (BT50)

Table Size

1,630 x 760 mm (64 x 30 in)

x axis travel

1,630 mm (64 in)

y axis travel

762 mm (30 in)

z axis travel

650 mm (26 in)

Overview

The DN Solutions DNM 750 50 II is the largest 50-taper VMC in the DNM family, built for shops that need serious torque combined with a big work envelope. With 1,630 x 762 x 650 mm (64 x 30 x 26 in) of axis travel and 353.2 Nm of spindle torque through an ISO 50 taper, this machine handles the heaviest milling operations a vertical platform can deliver.

The 1,630 x 760 mm table carries up to 1,500 kg, which is enough for large steel castings, heavy fixtures, and oversized workpieces that smaller VMCs can't support. At 13,800 kg machine weight, the DNM 750 50 II has the thermal and dynamic mass to stay stable during aggressive face milling with large-diameter cutters. The box-way construction pairs with the heavy castings to create a platform that thrives on interrupted cuts and heavy material removal.

The 8,000 RPM spindle keeps things straightforward — this machine is about torque, not speed. At 353.2 Nm, you can push large face mills, shell mills, and indexable cutters hard enough to maximize metal removal rates in steel and cast iron. The second-generation (II) design brings updated servo drives and thermal compensation that improve accuracy during long production runs where heat buildup can drift dimensions.

The 762 mm Y-axis and 650 mm Z-axis are the real differentiators versus the DNM 650 50 II. That extra Y-travel means wider parts fit without creative fixturing, and the 650 mm Z-depth handles tall parts and deep pockets that the 625 mm Z on smaller models just barely misses. For shops doing heavy structural and industrial component work, the DNM 750 50 II is the top of the DNM line before stepping up to the MYNX or double-column platforms.

Full Specifications

Parameter	Value
X Axis Travel	1,630 mm (64 in)
Y Axis Travel	762 mm (30 in)
Z Axis Travel	650 mm (26 in)
Max Spindle Speed	8,000 RPM
Spindle Torque	353.2 Nm (260 ft-lb)
Spindle Taper	ISO 50 (BT50)
Table Size	1,630 x 760 mm (64 x 30 in)
Table Load Capacity	1,500 kg (3,307 lb)
Tool Magazine Capacity	30 tools
Machine Weight	13,800 kg (30,424 lb)
CNC Control	Fanuc 0i-Plus with 15" iHMI touchscreen
Max Spindle Speed	8000 r/min
X Axis Travel Distance	1630 mm
Y Axis Travel Distance	762 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

353.2 Nm spindle torque through ISO 50 taper handles the heaviest milling operations in steel, cast iron, and tough alloys
1,630 mm X-axis travel combined with 762 mm Y gives a massive work envelope for large industrial components
1,500 kg table capacity supports heavy castings and large fixtures without compromising machine accuracy
13,800 kg machine weight provides outstanding vibration damping during aggressive face milling and slotting
650 mm Z-axis travel handles tall parts and deep cavities beyond what smaller DNM models can reach
Second-generation design with improved thermal compensation for better accuracy during long production runs

Limitations

13,800 kg weight requires serious foundation work — minimum 8-inch reinforced concrete slab recommended
ISO 50 tooling is heavier, more expensive, and more cumbersome to handle than BT40
8,000 RPM max speed limits high-speed applications — this machine is built for torque, not speed
Large footprint demands significant floor space that could fit two smaller VMCs

Best For

Heavy industry shops machining large steel castings, forgings, and structural weldments that need 50-taper torque Energy sector manufacturers working on turbine housings, generator frames, and heavy valve components Job shops doing heavy face milling, deep slotting, and aggressive roughing on oversized steel and iron parts Shops replacing aging 50-taper knee mills and bed mills with modern CNC capability Mold base manufacturers needing deep Z-reach and high torque for large P20 and H13 mold plates

Frequently Asked Questions

01 What does a DN Solutions DNM 750 50 II cost?

New machines run $150,000-$210,000 depending on tooling capacity, probe package, and accessories. The 50-taper configuration and large frame command a significant premium. Used Doosan-era models sell in the $60,000-$100,000 range depending on hours and condition.

02 How does the DNM 750 50 II compare to the DNM 650 50 II?

The 750 increases X-travel from 1,270 to 1,630 mm, Y from 670 to 762 mm, Z from 625 to 650 mm, and table load from 1,000 to 1,500 kg. It weighs 13,800 kg versus 9,000 kg. Both share the same 353.2 Nm, 8,000 RPM spindle. Choose the 750 when part size and weight demand the bigger platform.

03 What's the advantage of 50-taper over 40-taper for this size machine?

At this envelope size, the parts you're likely machining are heavy steel and iron that benefit from the 3x torque advantage of ISO 50. You can run 6-inch face mills at aggressive chip loads, take deep slotting cuts, and maintain tool rigidity during heavy roughing. The toolholder stiffness alone reduces chatter and extends tool life.

04 Is the DNM 750 50 II overkill for aluminum work?

Yes, for most aluminum applications. The 8,000 RPM limit and heavy ISO 50 tooling aren't optimized for high-speed aluminum machining. If your shop runs mostly aluminum, a 40-taper high-speed machine like the DNM 5700 S delivers better results. The 750 50 II shines on steel, cast iron, and tough alloys.