DN Solutions DNX 2100 S

$220,000 - $310,000 Updated 2026-03-19

Key Specifications

Max Turn Length

1100 mm

chuck size

210 mm

max turning diameter

520 mm

left spindle speed

5,000 RPM

left spindle power

18.5 kW (24.8 hp)

left spindle torque

326 Nm (240.5 ft-lb)

Overview

The DN Solutions DNX 2100 S is a dual-spindle multitasking turning center built for complete part production in a single chucking cycle. The S designation means sub-spindle, and that sub-spindle changes everything about what this machine can do. Parts come off done — front features, back features, milling, drilling, all completed without ever leaving the machine. For production shops, that translates directly to fewer setups, less handling, and tighter tolerances.

Both the main and sub-spindle run 8-inch chucks at 5,000 RPM with 18.5 kW (24.8 hp) and 326 Nm (240.5 ft-lb) of torque. Having matched spindles means you can rough and finish on the main spindle, hand the part off to the sub-spindle mid-cycle, and machine the back end with the same power and speed. The maximum turning diameter is 520 mm (20.5 in) with 1,100 mm (43.3 in) of turning length, giving you room for both short production parts and longer shaft work.

The milling capability lets you add cross-holes, flats, threads, and contoured features without pulling the part. Combined with the sub-spindle handoff, you can produce parts that would traditionally require three or four operations across different machines. That's where the ROI comes from — not just faster cycle times, but eliminating entire operations from the routing.

The machine weighs 10,850 kg (23,920 lb) and sits in a 4,615 x 2,285 mm footprint. DN Solutions uses the Fanuc 0i-Plus control with iHMI, which handles the dual-spindle synchronization, C-axis positioning, and milling interpolation. Programming is more involved than a simple 2-axis lathe, but any competent CAM system supports the DNX platform.

The DNX 2100 S competes with the Mazak QT 250MSY, Okuma Multus B250, and DMG Mori NLX 2500SY in the dual-spindle multitasking segment. DN Solutions' advantage is typically price-to-torque ratio and the comprehensive Fanuc control ecosystem.

Full Specifications

Parameter	Value
Chuck Size	210 mm
Max Turning Diameter	520 mm
Max Turning Length	1100 mm
Left Spindle Speed	5,000 RPM
Left Spindle Power	18.5 kW (24.8 hp)
Left Spindle Torque	326 Nm (240.5 ft-lb)
Right Spindle Speed	5,000 RPM
Right Spindle Power	18.5 kW (24.8 hp)
Right Spindle Torque	326 Nm (240.5 ft-lb)
Machine Dimensions	4,615 x 2,285 x 2,630 mm
Machine Weight	10,850 kg (23,920 lb)
CNC Control	Fanuc 0i-Plus with 15" iHMI touchscreen
Metric	IMPERIAL
Capacity	Chuck sizeMax. Turning DiameterMax. Turning Length
Left Spindle	Max. Spindle SpeedMax. Spindle PowerMax. Spindle Torque
Right Spindle	Max. Spindle SpeedMax. Spindle PowerMax. Spindle Torque
Dimensions	LengthHeightWidthWeight
Favorites	DNX 2100SB

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

Strengths & Limitations

Strengths

Dual matched spindles enable complete front-and-back part production in a single cycle
5,000 RPM spindle speed on both spindles handles small-diameter aluminum work efficiently
326 Nm torque on both spindles provides consistent cutting authority for main and back operations
B-axis milling eliminates secondary VMC operations for cross-holes, flats, and contour features
1,100 mm turning length accommodates both short production parts and longer shaft work
Sub-spindle handoff eliminates part transfer inaccuracies between operations

Limitations

8-inch chuck limits part diameter compared to the 10-inch B variant — evaluate your part range carefully
Higher programming complexity requires operators trained in multitasking turning and milling cycles
$220,000+ entry price is a significant step up from 2-axis lathes — ROI needs volume to justify
10,850 kg weight requires floor assessment and rigger access
Dual-spindle machines have more moving parts and higher maintenance requirements than single-spindle lathes

Best For

Production shops making complete parts (front and back features) that currently require multiple operations Automotive, hydraulic, and aerospace manufacturers running families of similar shaft and housing parts High-mix job shops wanting to reduce WIP and setup time by completing parts in one machine Facilities making parts with cross-holes, flats, and milled features alongside turned diameters Shops standardized on Fanuc wanting a dual-spindle multitasking platform

Frequently Asked Questions

01 What does a DN Solutions DNX 2100 S cost?

New DNX 2100 S machines run $220,000-$310,000 depending on tooling, sub-spindle configuration, and options. The sub-spindle adds significant cost over the single-spindle B model but eliminates the need for a second operation machine.

02 What's the difference between the DNX 2100 S and SB?

The S has matched 8-inch chucks on both spindles with 326 Nm torque. The SB steps up to a 10-inch main chuck with 456 Nm torque while keeping the 8-inch sub-spindle. Choose the S for balanced dual-spindle work; the SB when the main spindle needs more torque for heavy roughing.

03 Can the sub-spindle do more than just back-turning?

Yes. The sub-spindle handles back-turning, back-facing, back-drilling, and can work as an independent spindle for short parts. Combined with C-axis and live tooling, the sub-spindle can produce complex back-end features including off-center holes and milled features.

04 How does the DNX 2100 S compare to the SMX 2100 S?

The SMX 2100 is the larger, more capable multitasking platform with higher torque, more axis configurations, and greater turning diameter. The DNX 2100 S is the more accessible entry point. For most 8-inch chuck work, the DNX has enough capability. For heavy-duty or more complex multitasking, step up to the SMX.