DN Solutions SMX 2100 LST

$350,000 - $480,000 Updated 2026-03-19

Key Specifications

Max Turn Length

1540 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 LST is the fully loaded long-bed configuration of the SMX 2100 platform. It packs a sub spindle and a lower turret into the extended-bed frame, giving you simultaneous machining capability on long parts up to 1,540 mm. If you're running production on shaft-type components and need every second shaved off cycle time, this is the variant that delivers.

The left spindle drives an 8-inch chuck at 5,000 RPM with 22 kW (29.5 hp) and 467 Nm of torque. The right sub spindle matches that spec exactly — 5,000 RPM, 22 kW, 467 Nm — so you're not sacrificing capability on back-working operations. The B-axis milling head runs at 12,000 RPM for angular milling, cross-drilling, and 5-axis contouring through the FANUC 31i-B5 control with CUFOS.

What sets the LST apart from the LS is the lower turret. While the upper B-axis milling spindle works one feature, the lower turret can run a separate turning operation simultaneously. That parallel processing cuts cycle times significantly on parts with both turning and milling requirements. It's the difference between sequential ops and true simultaneous machining.

The machine tips the scales at 17,100 kg (37,699 lb) — the heaviest of the SMX 2100 long-bed variants. That extra 600 kg over the LS comes from the lower turret assembly and its servo drives. The footprint remains 5,630 x 2,770 x 2,777 mm, so you don't need more floor space than the L or LS variants.

For high-volume production shops in aerospace, automotive, or oil and gas, the LST configuration maximizes spindle utilization and minimizes cycle time. It's the most productive member of the SMX 2100 family, though it carries the highest price tag to match.

Full Specifications

Parameter	Value
Max Turning Diameter	600 mm
Max Turning Length	1540 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	17,100 kg (37,699 lb)
Machine Dimensions	5,630 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 upper B-axis milling spindle and lower turret slashes cycle times on complex parts
Long-bed 1,540 mm turning length with sub spindle handles complete processing of long shaft parts on both ends
Dual matched spindles at 5,000 RPM and 22 kW deliver full-capability turning and back-working on both sides
B-axis milling at 12,000 RPM with 5-axis simultaneous capability covers angular milling, cross-drilling, and contouring
Same footprint as the simpler L and LS variants — no additional floor space needed for the lower turret upgrade
Lower cost than comparable Mazak Integrex i-200ST Long or DMG Mori CTX beta TC configurations

Limitations

Highest price in the SMX 2100 family — the lower turret adds $50-80K over the LS configuration
Programming complexity increases significantly with simultaneous operations requiring collision avoidance management
8-inch chuck limits max workpiece diameter — shops needing larger capacity must step to SMX 2600 ST or 3100 ST
17,100 kg weight requires solid foundation and may need reinforced floor in some facilities
22 kW spindle power can feel limited during aggressive roughing on tough materials

Best For

High-volume aerospace production machining long actuator housings, landing gear pins, and structural components with features on both ends Automotive drivetrain shops running transmission shafts where cycle time savings from simultaneous machining pay for the upgrade Oil and gas manufacturers producing downhole tools and pump shafts with complex turning and milling features Production environments where maximizing spindle utilization and minimizing cycle time are the primary objectives Shops already running SMX 2100 variants looking to add simultaneous machining for higher throughput

Frequently Asked Questions

01 What does the lower turret do that the B-axis milling spindle can't?

The lower turret runs turning operations (OD turning, grooving, threading) simultaneously while the B-axis milling spindle handles milling features. Without the lower turret, turning and milling happen sequentially. With it, you can rough turn with the lower turret while the upper spindle drills cross-holes — cutting cycle time by 20-40% on suitable parts.

02 What does a new SMX 2100 LST cost?

New SMX 2100 LST machines typically run $350,000 to $480,000. The lower turret adds roughly $50-80K over the LS variant. Fully loaded configs with high-pressure coolant, probing, expanded tool magazine, and chip conveyor push toward the top of the range.

03 How complex is programming simultaneous operations?

It requires CAM software with multi-channel support and collision simulation. You're managing two cutting tools working simultaneously on the same part, which demands careful attention to interference zones. Most shops use Esprit, Mastercam with multi-tasking post, or VERICUT for verification. The learning curve is real but the cycle time payoff justifies it.

04 Is the lower turret live or static?

The lower turret includes live tooling capability, so it handles both static turning tools and driven tools for drilling, milling, and tapping. This adds flexibility for simultaneous operations where the lower turret does more than just OD turning.