DN Solutions DNM 650 50 II

$120,000 - $170,000 Updated 2026-03-19

Key Specifications

Max Spindle

8,000 RPM

Spindle Taper

ISO 50 (BT50)

Table Size

1,300 x 670 mm (51 x 26 in)

Spindle Power

22 kW (30 hp)

x axis travel

1,270 mm (50 in)

y axis travel

670 mm (26 in)

Overview

The DN Solutions DNM 650 50 II is the 50-taper heavyweight in the DNM lineup, built for shops that need serious spindle torque in a vertical platform. With 353.2 Nm of torque through an ISO 50 taper at 8,000 RPM, this machine eats through cast iron, steel, and Inconel at feed rates that would stall a 40-taper spindle. The "II" designation marks the second generation with updated servo drives and improved thermal compensation.

Axis travels of 1,270 x 670 x 625 mm (50 x 26 x 25 in) put the DNM 650 50 II in solidly mid-large VMC territory. That 670 mm Y-axis and 625 mm Z-axis give you room for tall parts and deep cavities that the 5700-series machines can't reach. The table measures 1,300 x 670 mm with a 1,000 kg load capacity, handling heavy castings and large fixtures without flinching.

At 9,000 kg, the DNM 650 50 II carries substantially more mass than its 40-taper siblings. That extra weight translates directly to vibration damping during aggressive face milling and deep slotting operations. The box-way construction pairs with the 50-taper spindle to create a platform that thrives on heavy material removal — think roughing out large steel plates, facing cast iron housings, and hogging through forgings.

The 22 kW spindle motor provides ample continuous power for sustained heavy cutting. Paired with the Fanuc control's adaptive feed capabilities, you can push the machine hard on roughing passes while maintaining consistent chip loads through varying engagement angles. For shops doing heavy steel and iron work, the 50-taper advantage over 40-taper machines isn't marginal — it's transformative.

Full Specifications

Parameter	Value
X Axis Travel	1,270 mm (50 in)
Y Axis Travel	670 mm (26 in)
Z Axis Travel	625 mm (25 in)
Max Spindle Speed	8,000 RPM
Spindle Motor Power	22 kW (30 hp)
Spindle Torque	353.2 Nm (260 ft-lb)
Spindle Taper	ISO 50 (BT50)
Table Size	1,300 x 670 mm (51 x 26 in)
Table Load Capacity	1,000 kg (2,205 lb)
Tool Magazine Capacity	30 tools
Machine Weight	9,000 kg (19,842 lb)
CNC Control	Fanuc 0i-Plus with 15" iHMI touchscreen
Max Spindle Speed	8000 r/min
X Axis Travel Distance	1270 mm
Y Axis Travel Distance	670 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 of spindle torque through ISO 50 taper handles heavy steel and cast iron cuts that stall 40-taper machines
625 mm Z-axis travel provides significantly more depth than the DNM 5700 series for tall parts and deep-cavity work
9,000 kg machine weight delivers outstanding vibration damping during aggressive roughing and face milling
Second-generation (II) design includes updated servo drives and improved thermal compensation for better accuracy over long runs
670 mm Y-axis travel expands part coverage compared to the 570 mm class machines

Limitations

8,000 RPM max spindle speed limits high-speed aluminum work — this machine is built for torque, not speed
ISO 50 tooling costs more and is heavier to handle than BT40, increasing tooling investment and operator fatigue
9,000 kg weight requires reinforced floor preparation and limits placement flexibility in the shop
Larger footprint and heavier components make maintenance tasks like spindle service more involved

Best For

Heavy industry shops machining large steel and cast iron components that demand 50-taper torque Energy sector manufacturers working with Inconel, stainless, and other tough alloys that need high spindle torque Job shops doing heavy face milling, deep slotting, and aggressive roughing on oversized workpieces Mold base manufacturers that need deep Z-reach and high torque for cutting P20 and H13 tool steel Shops replacing worn-out 50-taper knee mills with a modern CNC platform that keeps the torque advantage

Frequently Asked Questions

01 What does a DN Solutions DNM 650 50 II cost?

New pricing runs $120,000-$170,000 depending on options and configuration. The 50-taper spindle and heavier construction add a significant premium over the 40-taper DNM models. Used Doosan-era 50-taper DNMs sell in the $50,000-$85,000 range.

02 Why choose a 50-taper VMC over a 40-taper?

The ISO 50 taper provides roughly 3x the spindle torque of comparable 40-taper machines. For heavy steel and cast iron work, this means faster material removal rates, longer tool life from reduced deflection, and the ability to run large-diameter face mills and shell mills effectively. If your work is primarily aluminum, a 40-taper is the better choice.

03 How does the DNM 650 50 II compare to the MYNX 6500 50 II?

Both are 50-taper VMCs from DN Solutions. The MYNX 6500 50 II uses a different spindle configuration with 6,000 RPM max speed and 286.5 Nm torque, while the DNM 650 50 II runs 8,000 RPM with 353.2 Nm. The DNM has more torque and speed. Both share similar axis travels. Choose the DNM for heavier cutting, the MYNX for applications where the price difference matters.

04 What's the 'II' designation mean?

The II marks the second generation of this model with updated servo drives, improved thermal compensation, and refined casting design. It's not a major platform change — same footprint, same spindle — but the updates improve accuracy over long production runs and reduce warm-up time.