DN Solutions MYNX 5400 50 II

$100,000 - $145,000 Updated 2026-03-19

Key Specifications

Max Spindle

6,000 RPM

Spindle Taper

ISO 50 (BT50)

Table Size

1,200 x 540 mm (47 x 21 in)

Spindle Power

15 kW (20 hp)

x axis travel

1,020 mm (40 in)

y axis travel

550 mm (22 in)

Overview

The DN Solutions MYNX 5400 50 II is the entry-level model in the MYNX series' 50-taper lineup, delivering ISO 50 torque in a compact mid-size envelope. Axis travels of 1,020 x 550 x 530 mm (40 x 22 x 21 in) put it in a similar workspace as a 40-taper DNM 5700, but the 50-taper spindle transforms its cutting capability in steel and cast iron applications.

The spindle runs at 6,000 RPM with 15 kW (20 hp). That's a lower RPM ceiling than the DNM series' 50-taper models, reflecting the MYNX platform's focus on heavy-duty cutting at moderate speeds rather than versatility. The MYNX frame design uses wider box ways and heavier castings than the DNM series, trading rapid traverse speed for additional rigidity under load.

Rapid traverse rates of 30/30/24 m/min on X/Y/Z are slower than the DNM family but adequate for the kind of heavy production work this machine targets. The 1,200 x 540 mm table holds up to 1,000 kg, providing a solid platform for heavy castings and steel workpieces. At 7,500 kg machine weight, the MYNX 5400 50 II carries more mass per cubic meter of work envelope than most competitors.

The second-generation (II) design includes updated servo drives and improved thermal management. The MYNX platform has earned a reputation in heavy industry for reliable, day-in-day-out production on tough materials. Shops that are standardized on 50-taper tooling and need a mid-size VMC that won't flinch at deep cuts in hardened steel find the MYNX 5400 50 II to be a dependable workhorse.

Full Specifications

Parameter	Value
X Axis Travel	1,020 mm (40 in)
Y Axis Travel	550 mm (22 in)
Z Axis Travel	530 mm (21 in)
Max Spindle Speed	6,000 RPM
Spindle Motor Power	15 kW (20 hp)
Spindle Taper	ISO 50 (BT50)
Table Size	1,200 x 540 mm (47 x 21 in)
Table Load Capacity	1,000 kg (2,205 lb)
Rapid Traverse Xyz	30/30/24 m/min
Tool Magazine Capacity	30 tools
Machine Weight	7,500 kg (16,535 lb)
CNC Control	Fanuc 0i-Plus with 15" iHMI touchscreen
Max Spindle Speed	6000 r/min
X Axis Travel Distance	1020 mm
Y Axis Travel Distance	550 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 Torque
Table	Table LengthTable WidthMaximum Workpiece weight
Dimensions	LengthHeightWidthWeight
Favorites	Mynx 9500

Specifications sourced from dn-solutions.com — verified 2026-03-28

Strengths & Limitations

Strengths

ISO 50 taper spindle provides the torque advantage for heavy steel and cast iron cutting in a mid-size envelope
MYNX platform uses wider box ways and heavier castings than the DNM series for superior rigidity under heavy loads
7,500 kg machine weight delivers excellent vibration damping for a mid-size VMC
1,000 kg table capacity handles heavy castings and fixtures that push smaller machines to their limits
Second-generation design with improved thermal management reduces warm-up drift
More affordable entry point to 50-taper capability compared to larger DNM 650 50 II or 750 50 II

Limitations

6,000 RPM spindle speed is very conservative — limits aluminum and light-alloy work significantly
Slower rapids (30/30/24 m/min) increase non-cutting time compared to the DNM series
1,020 mm X-travel is modest — shops needing more reach should look at the MYNX 6500 50 II
550 mm Y-travel limits wider parts compared to the 670 mm class machines

Best For

Heavy industry shops that standardize on 50-taper tooling and need a mid-size VMC for steel and iron production Automotive die shops machining moderate-size dies and fixtures in tool steel Job shops doing heavy face milling and deep roughing on cast iron and steel parts in the 40-inch travel class Shops looking for affordable 50-taper entry without the footprint and cost of larger MYNX or DNM 50-taper models Production environments prioritizing rigidity and cutting capability over rapid traverse speed

Frequently Asked Questions

01 What does a DN Solutions MYNX 5400 50 II cost?

New pricing runs $100,000-$145,000 depending on options. It's the most affordable way into DN Solutions' 50-taper lineup. Used Doosan-era MYNX 5400 models sell for $40,000-$70,000 depending on condition.

02 What's the difference between the MYNX 5400 50 II and MYNX 5400 II?

The 50 II has an ISO 50 taper spindle at 6,000 RPM, while the standard MYNX 5400 II runs an ISO 40 taper at 8,000 RPM with 286.5 Nm torque. Both share the same travel envelope and table. Choose the 50 II for heavy steel work with large cutters; the standard II for more versatile mixed-material use.

03 How does the MYNX series differ from the DNM series?

The MYNX uses a heavier casting design with wider box ways, prioritizing rigidity over speed. MYNX rapids are slower but cutting rigidity is higher. The DNM series is more versatile with faster rapids and higher spindle speeds. Think of MYNX as the heavy-duty production line and DNM as the general-purpose line.

04 Is 6,000 RPM enough for modern machining?

For steel, cast iron, and tough alloys with indexable tooling, 6,000 RPM is plenty. Large face mills and shell mills rarely exceed 3,000-4,000 RPM even in aggressive cutting. The limitation shows up with smaller tools and lighter materials where higher surface speeds improve finish and productivity.