DN Solutions SMX 2600 S

$320,000 - $450,000 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

724 Nm (534 ft-lbs)

Overview

The DN Solutions SMX 2600 S adds a matching sub spindle to the proven SMX 2600 platform, creating a complete done-in-one production machine on a 10-inch chuck base. Both spindles run at 4,000 RPM with 30 kW (40 hp) and 724 Nm (534 ft-lbs) of torque — serious power for medium-to-heavy turning on steel, stainless, and nickel alloys.

Max turning diameter is 660 mm (26 in) with 1,540 mm (60.6 in) of turning length. That's a generous work envelope for the 10-inch chuck class, covering everything from short flanges to long shaft-type components. The B-axis milling spindle delivers 12,000 RPM with Capto C6 taper through 240 degrees of travel for angular milling, cross-drilling, and full 5-axis contouring.

The dual-spindle setup enables automated part transfer between spindles for complete back-working without operator intervention. Both spindles match at 30 kW and 724 Nm, so you're not losing cutting capability on second-op work. This is particularly valuable for parts like valve bodies, hydraulic manifolds, and coupling assemblies that need features machined on both ends.

At 16,200 kg (35,715 lb) on a 5,700 x 3,011 x 2,761 mm footprint, the SMX 2600 S sits between the smaller SMX 2100 S and the larger SMX 3100 S in the lineup. The FANUC 31i-B5 control with CUFOS handles 5-axis simultaneous machining and synchronized spindle operations.

The SMX 2600 S competes against the Mazak Integrex i-300S and Okuma Multus B300 with sub spindle. DN Solutions' pricing advantage — typically 20-30% below the Japanese competition — makes this machine a compelling choice for shops entering high-capability multi-tasking production.

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	724 Nm (534 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°)
Machine Weight	16,200 kg (35,715 lb)
Machine Dimensions	5,700 x 3,011 x 2,761 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

Matched 30 kW spindles on both sides deliver serious cutting power for medium-to-heavy turning without compromise on back-working
10-inch chucks on both spindles enable full-diameter part transfer for complete processing of larger workpieces
1,540 mm turning length handles long shaft-type parts in a single setup with sub spindle back-working
724 Nm torque on both spindles cuts aggressively on steel, stainless, and nickel alloys
B-axis milling at 12,000 RPM with Capto C6 taper provides genuine machining center capability
20-30% lower price than comparable Mazak Integrex i-300S and Okuma Multus B300 configurations

Limitations

No lower turret — simultaneous turning and milling requires stepping up to the SMX 2600 ST
4,000 RPM spindle speed limits surface footage on small-diameter parts compared to higher-speed platforms
16,200 kg machine weight requires solid foundation and potentially reinforced flooring
Roller guideway construction trades some rigidity for speed vs box-way alternatives under heavy interrupted cutting

Best For

Production shops machining valve bodies, hydraulic manifolds, and fittings that need features on both ends up to 10-inch diameter Aerospace manufacturers running medium-to-large components with complete processing in a single setup Oil and gas shops producing coupling assemblies, pump housings, and connector bodies with back-working requirements Shops that need the 10-inch chuck class with sub spindle capability without the added complexity of a lower turret Facilities upgrading from the SMX 2100 S that need more power, torque, and workpiece diameter capacity

Frequently Asked Questions

01 What's the difference between the SMX 2600 S and the base SMX 2600?

The S adds a matching sub spindle (right spindle) for automated back-working and part transfer. The base SMX 2600 is single-spindle only with tailstock support. The S variant costs roughly $40-60K more and weighs about 2,200 kg more than the base model.

02 What does a new SMX 2600 S cost?

New machines typically price between $320,000 and $450,000 depending on options. Base configs start around $320K, with high-pressure coolant, probing, expanded ATC, and chip conveyor pushing toward $450K. Used Doosan-era PUMA SMX 2600S machines run $180,000 to $280,000.

03 Should I get the SMX 2600 S or the SMX 2600 ST?

The ST adds a lower turret for simultaneous machining — turning while milling at the same time. If your parts have both heavy turning and milling features, the ST can cut 20-40% off cycle times. If your parts are mostly turning with some milling, the S gives you everything you need at a lower price and simpler programming.

04 How does the SMX 2600 S compare to the SMX 2100 S?

The 2600 S 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 bigger, more powerful machine for larger parts, priced roughly $50-70K more.