DN Solutions SMX 2600 ST

$380,000 - $520,000 Updated 2026-03-19

Key Specifications

Max Turn Length

1540 mm

max turning diameter

660 mm

chuck size

10 inch

left spindle speed

4,000 RPM

left spindle power

30 kW (40 hp)

left spindle torque

690 Nm (509 ft-lbs)

Overview

The DN Solutions SMX 2600 ST is the flagship production configuration of the SMX 2600 platform — sub spindle plus lower turret on a 10-inch chuck base. It's built for shops that need to squeeze every second out of cycle time while processing parts complete on both ends. The simultaneous machining capability of the lower turret working alongside the B-axis milling head is what separates this from the simpler S variant.

The left spindle pushes 30 kW (40 hp) at 4,000 RPM with 690 Nm (509 ft-lbs) of torque through a 10-inch chuck. The right sub spindle matches at 30 kW and 4,000 RPM with 724 Nm — actually slightly more torque than the main spindle. The B-axis milling head delivers 12,000 RPM with Capto C6 taper through 240 degrees of travel, while the lower turret runs live tools for simultaneous turning, drilling, or tapping.

Max turning diameter is 660 mm (26 in) with 1,540 mm (60.6 in) of turning length. At 18,000 kg (39,683 lb), it's noticeably heavier than the S variant — that extra 1,800 kg is the lower turret assembly and its drives. The footprint grows slightly to 5,790 x 3,021 x 2,820 mm.

The FANUC 31i-B5 control manages multi-channel programming for simultaneous operations. You can rough turn with the lower turret while the B-axis head mills cross-holes, then transfer the part to the sub spindle for second-op work — all in one uninterrupted cycle. It demands experienced programmers and verified CAM posts, but the throughput gains on production parts are substantial.

This machine goes head-to-head with the Mazak Integrex i-300ST and DMG Mori CTX beta 1250 TC. The DN Solutions price advantage holds at this level — expect to save $80-150K compared to the Japanese and German competition for equivalent capability.

Full Specifications

Parameter	Value
Max Turning Diameter	660 mm
Max Turning Length	1540 mm
Chuck Size	10 inch
Left Spindle Speed	4,000 RPM
Left Spindle Power	30 kW (40 hp)
Left Spindle Torque	690 Nm (509 ft-lbs)
Right Spindle Speed	4,000 RPM
Right Spindle Power	30 kW (40 hp)
Right Spindle Torque	724 Nm (534 ft-lbs)
Milling Spindle Speed	12,000 RPM
Milling Spindle Taper	Capto C6
B Axis Range	240° (+/-120°)
Lower Turret	Yes (live tooling)
Machine Weight	18,000 kg (39,683 lb)
Machine Dimensions	5,790 x 3,021 x 2,820 mm
CNC Control	FANUC 31i-B5 with CUFOS
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

Simultaneous machining with lower turret and B-axis milling head delivers 20-40% cycle time reduction on complex parts
Matched 30 kW spindles with 10-inch chucks on both sides handle full-diameter part transfer and heavy cutting
1,540 mm turning length plus sub spindle enables complete long-part processing without manual intervention
B-axis milling at 12,000 RPM with Capto C6 provides genuine 5-axis machining center capability
Lower turret with live tooling adds independent turning, drilling, and tapping operations for parallel processing
$80-150K less than comparable Mazak Integrex i-300ST and DMG Mori CTX beta 1250 TC

Limitations

18,000 kg weight requires solid foundation — check your floor loading capacity before purchase
Multi-channel programming is complex and requires experienced programmers with verified CAM posts
4,000 RPM spindle speed limits surface footage on small-diameter parts
Highest price in the SMX 2600 family — the lower turret adds $60-80K over the S variant
Slightly larger footprint than the S variant at 5,790 mm long vs 5,700 mm

Best For

High-volume production shops where simultaneous machining cycle time savings justify the premium over the S variant Aerospace manufacturers running landing gear components, actuator housings, and structural parts at production rates Oil and gas shops producing valve assemblies, connector bodies, and downhole tools with complex turning and milling features Automotive drivetrain manufacturers running transmission components and axle parts at volume Shops upgrading from the SMX 2100 ST that need 10-inch chuck capacity and 30 kW spindle power

Frequently Asked Questions

01 What does a new SMX 2600 ST cost?

New machines price between $380,000 and $520,000. The lower turret adds $60-80K over the S variant. Fully loaded configurations with high-pressure coolant, probing, expanded 80/120-tool ATC, and chip conveyor hit the top of the range. Used Doosan PUMA SMX 2600ST machines trade between $200,000 and $320,000.

02 How does the SMX 2600 ST compare to the SMX 2100 ST?

The 2600 ST steps up to 10-inch chucks (vs 8-inch), 30 kW spindle power (vs 22 kW), 660 mm turning diameter (vs 600 mm), and 1,540 mm turning length (vs 1,040 mm). It's a significantly larger and more powerful machine, priced roughly $60-80K more. Choose the 2100 ST for parts that fit the 8-inch chuck; choose the 2600 ST when you need the larger platform.

03 Why does the left spindle have less torque than the right?

The left spindle delivers 690 Nm vs 724 Nm on the right. This is a gearing difference, not a power difference — both run 30 kW. The variation is minor (about 5%) and rarely matters in practice. Both spindles deliver strong performance for medium-to-heavy turning.

04 Can I run the lower turret independently of the B-axis head?

Yes. You can program the lower turret and B-axis head to work simultaneously (parallel processing), sequentially, or independently depending on what the part requires. The FANUC multi-channel control manages tool collision avoidance between the two cutting stations.