DN Solutions Mill-Turn / Multi-Tasking Machines

DN Solutions SMX 5100 LS

Est. $620,000 - $850,000 Specs verified 2026-10-02 · dn-solutions.com Updated 2026-10-02

Image: dn-solutions.com, DN Solutions

Key Specifications

Max Spindle

2,400 rpm

Spindle Power

37 kW (50 hp)

Max Turn Length

3,050 mm (120 in)

chuck size

15 in

max turning diameter

830 mm (33 in)

spindle torque

1,643 N·m (1,212 ft-lb)

How much does the DN Solutions SMX 5100 LS cost?

Estimated price range

Est.$620,000 - $850,000

Our best estimate for a mill-turn / multi-tasking machine in this class — not a quote from DN Solutions. Configuration moves it a long way.

Overview

The DN Solutions SMX 5100 LS has two spindles with identical ratings: 2,400 rpm, 37 kW (50 hp) and 1,643 N·m (1,212 ft-lb) each. It turns up to 830 mm (33 in) in diameter and 3,050 mm (120 in) in length, with a 15 in chuck.

Matched spindles are not a given in this range. On the smaller SMX 3100 LS the sub-spindle has 724 N·m (534 ft-lb) against 1,203 N·m (887 ft-lb) on the main spindle, which pushes the heavy cutting onto one side. Here the second spindle can take the same depth of cut as the first, so the process can be split wherever it suits the part: by stock removal, by cycle balance, or by which end needs the tighter features.

The second spindle shows up in the table as length and mass. The SMX 5100 LS is 9,522 mm (375 in) long where the SMX 5100 L is 9,222 mm (363 in), with width and height unchanged at 3,597 × 3,346 mm (142 × 132 in). Weight is 32,200 kg (70,989 lb), compared with 31,000 kg (68,343 lb) for the SMX 5100 L.

DN describes the series with B-axis and C-axis control to 0.0001 degree, a front tool magazine with its ATC operation panel, and thermal compensation for the spindle and feed axes. What the table leaves out is the sub-spindle chuck size and the spacing between the spindles, both of which matter if long shafts are to be held at both ends. For heavier cuts, the SMX 5100 LSB lists 4,200 N·m (3,098 ft-lb) at 1,500 rpm on both spindles.

Full Specifications

Parameter	Value
Chuck Size	15 in
Max Turning Diameter	830 mm (33 in)
Max Turning Length	3,050 mm (120 in)
Max Spindle Speed	2,400 rpm
Spindle Motor Power	37 kW (50 hp)
Spindle Torque	1,643 N·m (1,212 ft-lb)
Sub Spindle Speed	2,400 rpm
Sub Spindle Power	37 kW (50 hp)
Sub Spindle Torque	1,643 N·m (1,212 ft-lb)
Floor Space Required	9,522 × 3,597 × 3,346 mm (375 × 142 × 132 in)
Machine Weight	32,200 kg (70,989 lb)

Specifications sourced from dn-solutions.com — verified 2026-10-02

Strengths & Limitations

Strengths

Sub-spindle matches the main spindle at 2,400 rpm, 37 kW (50 hp) and 1,643 N·m (1,212 ft-lb)
Either end of a part up to 3,050 mm (120 in) long can be roughed at full torque, so operations can be balanced between spindles
830 mm (33 in) maximum turning diameter with a 15 in chuck on the main spindle
2,400 rpm on both spindles, against 1,500 rpm on the SMX 5100 LSB
Width and height stay at 3,597 × 3,346 mm (142 × 132 in), the same as the single-spindle SMX 5100 L

Limitations

Footprint length grows to 9,522 mm (375 in), from 9,222 mm (363 in) on the SMX 5100 L
1,643 N·m (1,212 ft-lb) per spindle is less than half the 4,200 N·m (3,098 ft-lb) of the SMX 5100 LSB
Turning length is 3,050 mm (120 in); the 4,070 mm (160 in) SMX 5100 XL is listed without sub-spindle rows
DN's table omits the sub-spindle chuck size, the distance between spindles and all milling spindle data

Best For

Long shafts machined complete at both ends, with equal cutting capacity on each side Parts up to 830 mm (33 in) in diameter that need heavy work on the second side Splitting long cycles evenly across two 37 kW (50 hp) spindles Large mill-turn parts with features positioned by the B-axis and C-axis

Frequently Asked Questions

01 Are the two spindles on the SMX 5100 LS really the same?

In DN's table, yes. Main and sub-spindle are both listed at 2,400 rpm, 37 kW (50 hp) and 1,643 N·m (1,212 ft-lb). The table states a 15 in chuck size without giving a separate figure for the sub-spindle, so confirm the second chuck with DN if your second-side grip diameter is critical.

02 What is the difference between the SMX 5100 LS and the SMX 5100 L?

The SMX 5100 L has one spindle. The SMX 5100 LS adds a sub-spindle of equal rating, which lengthens the machine from 9,222 mm (363 in) on the SMX 5100 L to 9,522 mm (375 in) and raises weight from 31,000 kg (68,343 lb) to 32,200 kg (70,989 lb). Turning diameter, turning length and the main spindle are the same.

03 When would I choose the SMX 5100 LSB instead?

When torque matters more than speed. The SMX 5100 LSB has a 21 in chuck and lists 1,500 rpm and 4,200 N·m (3,098 ft-lb) on both spindles, and weighs 35,900 kg (79,146 lb). The SMX 5100 LS runs to 2,400 rpm with 1,643 N·m (1,212 ft-lb) and weighs 32,200 kg (70,989 lb). Large-diameter roughing favours the LSB; smaller diameters and finishing favour the LS.

04 Can a long shaft be gripped by both spindles?

The table cannot confirm it. DN gives a maximum turning length of 3,050 mm (120 in) but not the distance between spindle faces or the sub-spindle stroke. With two spindles of equal torque, driving a shaft from both ends is a reasonable thing to ask for, so send DN the part length and ask whether synchronised clamping at that length is supported.

05 What floor space does the SMX 5100 LS need?

9,522 × 3,597 × 3,346 mm (375 × 142 × 132 in) as length, width and height, for a machine weighing 32,200 kg (70,989 lb). Add working room at the front for loading parts up to 3,050 mm (120 in) long and for reaching the front tool magazine.