DN Solutions SMX 3100

$300,000 - $420,000 Updated 2026-03-13

Key Specifications

X Travel

695 mm (27.4 in)

Y Travel

300 mm (11.8 in) [+/-150 mm]

Z Travel

1,585 mm (62.4 in)

Max Turn Length

1,540 mm (60.6 in)

max turning diameter

660 mm (26 in)

b axis range

240° (+/-120°)

Overview

The DN Solutions SMX 3100 is the single-turret, single-spindle base variant of the SMX 3100 platform — a multi-tasking mill-turn machine with full B-axis milling capability on a 12-inch chuck. Formerly the Doosan PUMA SMX 3100, this machine delivers the core done-in-one value proposition of the SMX 3100 family without the added complexity and cost of the sub spindle (3100S) or sub spindle plus lower turret (3100ST).

The main spindle delivers 30 kW (40 hp) at 3,000 RPM through a 12-inch chuck, with 1,203 Nm (887 ft-lbs) of torque for heavy turning in steel, stainless, and titanium. The B-axis milling spindle hits 12,000 RPM with 26 kW (35 hp) and Capto C6 taper, providing 240 degrees (+/- 120 degrees) of angular access for milling, drilling, and tapping operations that would otherwise require a second setup on a machining center.

Axis travels of 695 mm on X, 300 mm (+/- 150 mm) on Y, and 1,585 mm on Z provide a generous work envelope. Max turning diameter is 660 mm (26 in) and max turning length is 1,540 mm (60.6 in), handling long shafts, aerospace components, and oil and gas parts with ease. The 60-tool ATC (expandable to 80) and 103 mm (4.1 in) bar capacity support production automation.

The SMX 3100 base model is the right choice for shops that primarily do front-working operations — where parts are completed from one side and don't require back-working on a sub spindle. Without the sub spindle and lower turret, the machine is simpler to program, easier to maintain, and costs roughly $50-100K less than the ST variant. New machines price between $300,000 and $420,000. It runs on a FANUC 31i-B5 control with CUFOS 5-axis simultaneous capability. At roughly 16,000 kg (35,274 lb), it's slightly lighter than the ST variant. Specs sourced from DN Solutions and dealer published data.

Full Specifications

Parameter	Value
Max Turning Diameter	660 mm (26 in)
Max Turning Length	1,540 mm (60.6 in)
X-Axis Travel	695 mm (27.4 in)
Y-Axis Travel	300 mm (11.8 in) [+/-150 mm]
Z-Axis Travel	1,585 mm (62.4 in)
B Axis Range	240° (+/-120°)
Main Spindle Speed	3,000 RPM
Main Spindle Power	30 kW (40 hp) / 1,203 Nm (887 ft-lbs)
Milling Spindle Speed	12,000 RPM
Milling Spindle Power	26 kW (35 hp) / 124 Nm (91 ft-lbs)
Milling Spindle Taper	Capto C6
Chuck Size	12 in
Bar Capacity	103 mm (4.1 in)
Tool Capacity Atc	60 tools (expandable to 80)
Rapid Traverse X Z	48 m/min (1,889 ipm)
Rapid Traverse Y	36 m/min (1,417 ipm)
Machine Weight	16,000 kg (35,274 lb)
CNC Control	FANUC 31i-B5 with CUFOS 5-axis simultaneous
Metric	IMPERIAL

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

Strengths & Limitations

Strengths

Full 240-degree B-axis milling spindle at 12,000 RPM with Capto C6 taper delivers genuine machining center capability on a 12-inch chuck turning platform
Simpler single-spindle, single-turret configuration is easier to program and maintain than the ST variant, with fewer collision zones and simpler CAM post requirements
$50-100K savings over the SMX 3100ST makes B-axis multi-tasking accessible for shops that don't need sub-spindle back-working capability
1,540 mm (60.6 in) max turning length handles long aerospace shafts, oil and gas components, and energy sector parts in a single setup
30 kW main spindle with 1,203 Nm torque through a 12-inch chuck provides serious roughing capability in steel and titanium

Limitations

No sub spindle means parts requiring back-working need manual rechucking, adding handling time and potential concentricity error for parts with features on both ends
3,000 RPM main spindle is the slowest in the multi-tasking competitive class — Mazak Integrex runs 5,000 RPM, limiting small-diameter high-speed turning
Roller linear guideway construction trades rigidity for speed compared to box-way competitors, noticeable during heavy interrupted cuts
B-axis accuracy requires attention — the SMX platform is documented to have 0.008-0.03 mm Y-axis displacement during B-axis clamping without macro compensation

Best For

Shops entering multi-tasking that primarily do front-working operations where parts are completed from one side, avoiding the complexity and cost of a sub-spindle machine Aerospace manufacturers machining long shafts, landing gear components, and structural parts up to 1,540 mm that need turning and angular milling in a single setup Oil and gas shops producing large-diameter valve bodies, connectors, and downhole tools with complex OD/ID features and cross-holes Budget-conscious shops that want SMX 3100-class capability at $300-420K instead of $350-500K for the full ST variant

Frequently Asked Questions

01 What's the difference between the SMX 3100 and SMX 3100ST?

The SMX 3100 is the single-spindle base variant with B-axis milling and a single ATC. The SMX 3100ST adds a sub spindle (4,000 RPM, 26 kW) for back-working and a 12-station BMT lower turret with 5,000 RPM live tooling for simultaneous cutting. The ST variant enables done-in-one processing for parts with features on both ends and simultaneous operations for faster cycle times, but costs $50-100K more and is more complex to program.

02 What does a new DN Solutions SMX 3100 cost?

New SMX 3100 base machines typically price between $300,000 and $420,000 depending on tool capacity and options. That's roughly $50-100K less than the SMX 3100ST with sub spindle and lower turret. Used examples from the Doosan era (2016-2022) trade between $120,000 and $250,000 depending on hours and condition.

03 Can I upgrade from SMX 3100 to 3100ST later?

No, the sub spindle and lower turret are integral to the machine casting and cannot be retrofitted. If there's any chance you'll need back-working capability, it's far more cost-effective to buy the S or ST variant upfront. The base SMX 3100 is the right choice only if you're confident your work is front-side-only.

04 How does the SMX 3100 compare to the Mazak Integrex i-300?

The Integrex i-300 offers a faster 5,000 RPM main spindle and Mazak's box-way construction for better rigidity. The SMX 3100 counters with a larger 1,540 mm turning length vs 1,519 mm, competitive milling spindle specs, and a 25-30% lower price. The Mazak wins on precision and spindle speed; the DN Solutions wins on value and is a strong choice for shops where cost is a primary factor.