DN Solutions SMX 5100 L

$550,000 - $750,000 Updated 2026-03-19

Key Specifications

Max Turn Length

3050 mm

max turning diameter

830 mm

chuck size

15 inch

left spindle speed

2,400 RPM

left spindle power

37 kW (49.6 hp)

left spindle torque

1,643 Nm (1,212 ft-lbs)

Overview

The DN Solutions SMX 5100 L is the entry point to DN Solutions' largest multi-tasking platform — a 15-inch chuck behemoth with 3,050 mm (120 in) of turning length. That's ten feet of B-axis mill-turn capability for the biggest, heaviest parts in your shop. It's the machine you spec when the SMX 3100 simply isn't large enough.

The main spindle pushes 37 kW (49.6 hp) at 2,400 RPM with a massive 1,643 Nm (1,212 ft-lbs) of torque through the 15-inch chuck. That's the torque you need for roughing large-diameter steel forgings, stainless housings, and heavy alloy components. The B-axis milling spindle delivers 12,000 RPM for cross-drilling, angular milling, and 5-axis contouring on parts that would otherwise need a separate milling setup.

Max turning diameter is 830 mm (32.7 in) — over 32 inches of swing capacity. At 31,000 kg (68,343 lb), this is a seriously heavy machine. The footprint stretches to 9,222 x 3,597 x 3,346 mm, so you're looking at significant floor space and foundation requirements. A reinforced concrete foundation designed for this machine's weight and cutting forces is mandatory, not optional.

The L variant uses a programmable tailstock for long-part support rather than a sub spindle. For many large-diameter long-shaft applications — rollers, turbine shafts, marine propulsion components — tailstock support is exactly what you need during heavy cutting. If you need back-working, the LS variant adds a sub spindle.

The FANUC 31i-B5 control with CUFOS handles 5-axis simultaneous machining. This platform competes against the Mazak Integrex e-1600 and DMG Mori NTX 3000 in the large multi-tasking segment. For heavy industry, power generation, and marine applications, the SMX 5100 L delivers exceptional multi-tasking capability at a price that undercuts the competition.

Full Specifications

Parameter	Value
Max Turning Diameter	830 mm
Max Turning Length	3050 mm
Chuck Size	15 inch
Left Spindle Speed	2,400 RPM
Left Spindle Power	37 kW (49.6 hp)
Left Spindle Torque	1,643 Nm (1,212 ft-lbs)
Milling Spindle Speed	12,000 RPM
B Axis Range	240° (+/-120°)
Machine Weight	31,000 kg (68,343 lb)
Machine Dimensions	9,222 x 3,597 x 3,346 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

15-inch chuck with 830 mm turning diameter handles the largest workpieces in the SMX lineup
3,050 mm turning length covers ten-foot parts for power generation, marine, and heavy industry applications
1,643 Nm torque provides the cutting force for heavy roughing on large-diameter steel and stainless forgings
37 kW spindle power sustains aggressive material removal on tough alloys at the larger chuck size
B-axis milling at 12,000 RPM eliminates separate milling setups on parts that would otherwise need two machines
31,000 kg mass delivers exceptional thermal stability and vibration damping for tight tolerances on heavy parts

Limitations

31,000 kg weight demands purpose-built foundation — standard shop floors won't handle this machine
9,222 mm length requires significant floor space and careful facility layout planning
No sub spindle — parts needing back-working require the LS variant or manual rechucking
2,400 RPM spindle speed limits surface footage on smaller-diameter sections of large parts
High purchase price puts it beyond the reach of typical job shops — best suited for dedicated production

Best For

Power generation and turbine shops machining large shafts, rotors, and generator components with milling features Marine manufacturers producing propeller shafts, stern tubes, and heavy cylindrical components up to 3,050 mm Oil and gas shops running large valve bodies, wellhead components, and heavy downhole assemblies Heavy equipment manufacturers machining large rollers, pins, and structural shafts that need mill-turn capability Steel mill and mining equipment shops producing heavy cylindrical parts with cross-holes and angular features

Frequently Asked Questions

01 What does a new SMX 5100 L cost?

New machines price between $550,000 and $750,000 depending on configuration. The 5100 platform is DN Solutions' flagship — tooling, options, and specialized fixturing add up quickly. Budget for foundation work separately, which can run $30-80K depending on your facility.

02 How heavy of a workpiece can the SMX 5100 L handle?

The machine supports heavy workpieces appropriate for the 15-inch chuck and 830 mm swing. Exact weight capacity depends on configuration and whether a steady rest is used. Typical setups handle workpieces from 500 kg to several thousand kilograms with proper support.

03 What kind of foundation does the SMX 5100 L need?

A dedicated reinforced concrete foundation engineered for the 31,000 kg machine weight plus dynamic cutting forces. DN Solutions provides foundation drawings with the machine order. Typical specs call for 300-500 mm thick reinforced concrete isolated from the surrounding floor. Budget $30-80K for foundation work.

04 How does the SMX 5100 L compare to the SMX 3100 L?

The 5100 L steps up to a 15-inch chuck (vs 12-inch), 830 mm turning diameter (vs 660 mm), 3,050 mm turning length (vs 2,540 mm), and 37 kW/1,643 Nm spindle power (vs 30 kW/1,203 Nm). It weighs 10,900 kg more and costs roughly $170-230K more. Choose the 5100 when the 3100 can't handle your part size.