DN Solutions PUMA SMX 2600ST

$500,000 - $750,000 Updated 2026-03-16

Key Specifications

Max Turn Length

1540 mm

max turning diameter

660 mm

main spindle speed max

3,500 RPM

main spindle power

22 kW (30 hp)

main spindle torque

398 Nm (293 ft-lb)

main spindle nose

A2-8

Overview

The DN Solutions PUMA SMX 2600ST is a 9-axis multi-tasking mill-turn center that combines a B-axis milling spindle, twin turning spindles, and a Y-axis into a single machine capable of handling the most complex prismatic and rotational parts in one setup. SMX stands for Smart Multi-tasking eXcellence — DN Solutions' designation for their top-tier multi-tasking platform, and the 2600ST indicates the 10-inch chuck class with sub-spindle (S) and twin spindle (T) configuration.

At the heart of the machine is the B-axis milling spindle, which swings ±120° to position a high-speed milling head at any angle relative to the workpiece. This allows 5-axis simultaneous machining of complex geometries — turbine blade profiles, angled ports, compound-angle holes, and free-form surfaces — on a part that is simultaneously held in the main spindle. The milling spindle runs at up to 12,000 RPM with 18.5 kW (25 hp), operating with standard BT40 or HSK-A63 tooling.

The main turning spindle carries an A2-8 nose driven by a 22 kW (30 hp) motor at up to 3,500 RPM with 398 Nm (293 ft-lb) of torque. The sub-spindle (second turning spindle) runs an A2-6 nose with 18.5 kW (25 hp) at up to 4,500 RPM, enabling second-operation turning simultaneously with main spindle work in the overlap cutting mode that reduces total cycle time below what sequential operation would require. Main spindle through-bore is 82 mm (3.2 in).

The Y-axis adds ±105 mm (±4.1 in) of off-center travel for milling operations, significantly more range than standard Y-axis turning centers. Combined with B-axis tilt and C-axis positioning of the turning spindles, the SMX 2600ST can complete virtually any part that fits within its turning envelope without leaving the machine.

Axis count reaches 9 axes: X, Y, Z on the tool side, B-axis on the milling spindle, C1 on the main spindle, C2 on the sub-spindle, and independent Z travel for the sub-spindle. Box-way construction throughout provides the rigidity this capability level demands.

The control is FANUC 31i-B5 with DN Solutions' iHMI interface, supporting simultaneous 5-axis machining and multi-spindle overlap cutting. Siemens 840D SL is available for shops with Siemens standardization requirements.

Pricing runs $500,000-$750,000 new, reflecting the machine's capability class. The SMX 2600ST competes with the Mazak INTEGREX i-200S and the DMG Mori NTX 2000 in this segment.

Full Specifications

Parameter	Value
Max Turning Diameter	660 mm
Max Turning Length	1540 mm
Main Spindle Speed Max	3,500 RPM
Main Spindle Power	22 kW (30 hp)
Main Spindle Torque	398 Nm (293 ft-lb)
Main Spindle Nose	A2-8
Main Spindle Bore	82 mm (3.2 in)
Chuck Size	10 inch
Sub Spindle Speed Max	4,500 RPM
Sub Spindle Power	18.5 kW (25 hp)
Sub Spindle Nose	A2-6
Sub Spindle Bore	65 mm (2.6 in)
Milling Spindle Speed Max	12,000 RPM
Milling Spindle Power	18.5 kW (25 hp)
Milling Spindle Interface	HSK-A63 / BT40
B Axis Range	±120°
Y Axis Travel	±105 mm (±4.1 in)
X Axis Travel	700 mm (27.6 in)
Z Axis Travel	1,145 mm (45.1 in)
Rapid Traverse X	30 m/min (1,181 in/min)
Rapid Traverse Y	20 m/min (787 in/min)
Rapid Traverse Z	30 m/min (1,181 in/min)
Number Of Axes	9
Tool Magazine Capacity	40-tool ATC (expandable)
Guide Type	Box ways
Machine Weight	18,000 kg (39,683 lb)
CNC Control	FANUC 31i-B5 with 19" iHMI touchscreen (Siemens 840D SL optional)
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	SMX5100XLB

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

Strengths & Limitations

Strengths

B-axis milling spindle swinging ±120° enables true 5-axis simultaneous machining of complex geometries — turbine blades, compound-angle ports, and free-form surfaces — on one machine
9-axis architecture with twin turning spindles allows overlap cutting where main and sub-spindle operate simultaneously, dramatically reducing total cycle time on complex parts
12,000 RPM milling spindle with HSK-A63 interface handles both high-speed aluminum machining and productive cutting of steel and titanium
Y-axis travel of ±105 mm (±4.1 in) is among the largest in the 10-inch chuck mill-turn class, covering the full range of off-center milling requirements
Box-way construction throughout provides the rigidity and damping needed for aggressive turning and milling operations in tough aerospace and energy alloys
Eliminates multiple setups across turning centers, VMCs, and 5-axis machining centers — one machine, one setup, one datum

Limitations

FANUC 31i-B5 multi-axis programming requires specialized skills — programming complex SMX cycles is significantly more demanding than standard turning or machining center work
$500,000-$750,000 capital cost is justifiable only for shops with a consistent supply of high-complexity, high-value parts
18,000 kg (39,683 lb) machine requires substantial floor reinforcement and rigging for installation
Long lead times typical of premium multi-tasking machines — 24-36 weeks from order to delivery
Maintenance complexity is higher than simpler lathes or machining centers — multiple spindles, B-axis, and ATC require specialist service knowledge
Sub-optimal ROI if the machine runs primarily simple 2-axis turning work that doesn't require its multi-tasking capability

Best For

Aerospace component manufacturers machining turbine blades, compressor disks, structural brackets, and engine casings in titanium and Inconel Oil and gas equipment shops processing complex valve bodies, manifolds, downhole tool components, and BOP assemblies requiring multiple machining operations Medical device manufacturers producing complex surgical implants and instruments that combine turning and 5-axis milling requirements High-value job shops competing on complex part capability where reducing setups from 4-6 operations to one is a decisive competitive advantage Defense and energy contractors producing small-to-medium quantities of highly complex parts where per-part accuracy and traceability are critical

Frequently Asked Questions

01 What does the SMX designation mean on the PUMA SMX 2600ST?

SMX stands for Smart Multi-tasking eXcellence — DN Solutions' brand name for their top-tier multi-tasking machine platform. The 2600 indicates the 10-inch chuck turning capacity class. ST indicates Sub-spindle and Twin-spindle configuration, meaning the machine has both a sub-spindle for second-operation work and a full second turning spindle that can operate simultaneously with the main spindle using overlap cutting.

02 How does the B-axis on the PUMA SMX 2600ST work?

The B-axis is a rotary axis on the milling spindle head that allows the milling spindle to tilt ±120° from vertical. At any B-axis angle, the machine can perform simultaneous 5-axis machining — tilting the cutter to reach undercuts, machine angled surfaces, create compound-angle holes, and produce complex contoured features. The B-axis combined with C-axis spindle positioning and Y-axis travel provides full 5-axis simultaneous machining capability.

03 How does the PUMA SMX 2600ST compare to the Mazak INTEGREX i-200S?

Both are premium 5-axis mill-turn machines in the 10-inch chuck class at similar price points. The Mazak INTEGREX i-200S uses Mazatrol SmoothX control, which many operators find more accessible for complex multi-tasking programming. The DN Solutions SMX 2600ST offers Fanuc 31i-B5 or Siemens 840D SL. Both deliver comparable machining capability. The choice often comes down to regional dealer support, control preference, and existing shop standardization.

04 What is the tool magazine capacity of the PUMA SMX 2600ST?

The standard ATC holds 40 tools, expandable to larger magazines depending on configuration. Tools are accessed via a chain-type magazine for the milling spindle. The turning turret holds a separate set of static and driven turning tools. For shops machining complex parts with many features, specifying the expanded tool magazine is recommended to minimize tool changes and support unattended production.

05 Can the PUMA SMX 2600ST run untended overnight production?

Yes, with appropriate automation support. The twin-spindle architecture (main + sub-spindle) enables fully automatic part transfer and complete machining without operator intervention. Combined with a bar feeder or robot loader, a palletizing system, and the expanded tool magazine, the SMX 2600ST can run lights-out on complex parts that simpler machines would require multiple attended setups to produce.