DN Solutions SMX 2100 ST

$320,000 - $450,000 Updated 2026-03-19

Key Specifications

Max Turn Length

1040 mm

max turning diameter

600 mm

chuck size

8 inch

left spindle speed

5,000 RPM

left spindle power

22 kW (29.5 hp)

left spindle torque

467 Nm (344 ft-lbs)

Overview

The DN Solutions SMX 2100 ST is the standard-bed simultaneous machining workhorse of the SMX 2100 family. It packs a sub spindle plus a lower turret into the 8-inch chuck platform, enabling you to turn with the lower turret while milling with the B-axis head at the same time. That parallel processing capability is where the real cycle time savings happen.

Both spindles deliver 22 kW (29.5 hp) at 5,000 RPM with 467 Nm (344 ft-lbs) of torque. Matched power on both sides means no compromise on back-working operations. The B-axis milling spindle hits 12,000 RPM through 240 degrees of travel, and the lower turret adds its own set of turning and live tools for simultaneous ops.

Max turning diameter is 600 mm (23.6 in) across 1,040 mm (40.9 in) of turning length. At 15,800 kg (34,833 lb), the ST is the heaviest standard-bed SMX 2100 variant — that extra mass over the S model (600 kg) comes from the lower turret and its servo drives. The footprint stays at 4,845 x 2,770 x 2,777 mm.

The FANUC 31i-B5 control with CUFOS manages multi-channel programming for simultaneous operations. You'll need CAM software with multi-tasking support and collision simulation — Esprit, GibbsCAM, or Mastercam with the right post processor. The programming complexity is higher than single-tool-path machines, but the payoff is 20-40% faster cycle times on parts with both turning and milling features.

The SMX 2100 ST competes against the Mazak Integrex i-200ST and DMG Mori CTX beta 800 TC. It gives up nothing in capability to those machines while coming in at a notably lower price. For production shops where cycle time drives profitability, the ST variant pays for its premium over the simpler S model through sheer throughput.

Full Specifications

Parameter	Value
Max Turning Diameter	600 mm
Max Turning Length	1040 mm
Chuck Size	8 inch
Left Spindle Speed	5,000 RPM
Left Spindle Power	22 kW (29.5 hp)
Left Spindle Torque	467 Nm (344 ft-lbs)
Right Spindle Speed	5,000 RPM
Right Spindle Power	22 kW (29.5 hp)
Right Spindle Torque	467 Nm (344 ft-lbs)
Milling Spindle Speed	12,000 RPM
B Axis Range	240° (+/-120°)
Lower Turret	Yes (live tooling)
Machine Weight	15,800 kg (34,833 lb)
Machine Dimensions	4,845 x 2,770 x 2,777 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 B-axis milling and lower turret turning cuts cycle times 20-40% on suitable parts
Dual matched spindles at 5,000 RPM and 22 kW for full-capability turning and back-working on both sides
B-axis milling at 12,000 RPM with 5-axis simultaneous capability covers complex angular features and contouring
Lower turret with live tooling adds drilling, tapping, and milling capability independent of the upper B-axis head
More compact footprint than the long-bed LST variant while delivering the same simultaneous machining capability
Strong value proposition against Mazak Integrex i-200ST and DMG Mori CTX beta 800 TC at 25-30% lower price

Limitations

Programming complexity jumps significantly with multi-channel simultaneous operations and collision avoidance
8-inch chuck limits workpiece diameter — bigger parts need the SB, STB, or SMX 2600 ST platform
1,040 mm turning length won't cover longer shaft parts — need the LST variant for parts over 41 inches
Lower turret adds cost and maintenance complexity over the simpler S variant
Requires CAM software with multi-tasking post processor support, adding software cost

Best For

Production shops where cycle time directly impacts profitability and simultaneous machining pays for itself quickly Aerospace manufacturers running medium-volume parts with complex turning and milling features in a single setup Automotive component shops producing gearbox housings, flanges, and fittings at production volumes Job shops wanting maximum throughput flexibility for diverse part geometries with both turning and milling requirements Shops upgrading from the SMX 2100 S looking to add simultaneous machining for shorter cycle times

Frequently Asked Questions

01 How much faster is the ST vs the S variant?

Typical cycle time reduction is 20-40% on parts with both turning and milling features. The exact savings depend on how much of the cycle can run in parallel — parts with long OD turning and multiple cross-holes see the biggest gains because the lower turret turns while the B-axis drills.

02 What does a new SMX 2100 ST cost?

New machines run $320,000 to $450,000. The lower turret adds roughly $50-70K over the S variant. Loaded configs with high-pressure coolant, probing, expanded ATC, and bar feeder hit the top of the range.

03 What CAM software supports the SMX 2100 ST?

Esprit, GibbsCAM, Mastercam (with multi-tasking module), and hyperMILL all support the SMX platform with multi-channel programming. You'll also want VERICUT or equivalent for collision simulation — running two tools simultaneously requires solid verification before hitting cycle start.

04 Should I get the ST or the LST?

Choose the ST if your parts fit within 1,040 mm turning length — it's more compact and about $30-40K less. Choose the LST if you regularly machine parts between 1,040 mm and 1,540 mm that need simultaneous machining. The capability difference is purely turning length.