DN Solutions Mill-Turn / Multi-Tasking Machines

DN Solutions SMX 2600 S

Est. $320,000 - $450,000 Specs verified 2026-10-02 · dn-solutions.com Updated 2026-10-02

Image: dn-solutions.com, DN Solutions

Key Specifications

Max Spindle

4,000 rpm

Spindle Power

30 kW (40 hp)

Max Turn Length

1,540 mm (61 in)

chuck size

10 in

max turning diameter

660 mm (26 in)

spindle torque

724 N·m (534 ft-lb)

How much does the DN Solutions SMX 2600 S cost?

Estimated price range

Est.$320,000 - $450,000

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 2600 S has two turning spindles with one rating: 4,000 rpm, 30 kW (40 hp) and 724 N·m (534 ft-lb) each. The chuck is 10 in, and the machine turns up to 660 mm (26 in) in diameter and 1,540 mm (61 in) in length.

Putting 30 kW (40 hp) on the second spindle changes how work can be divided. A weaker second spindle would restrict the back of the part to finishing. Here a forging or a sawn billet can be roughed on one side, transferred and roughed again on the other at the same 724 N·m (534 ft-lb). For parts with similar amounts of material to remove from each end, that balances the two halves of the cycle, and for long shafts it means either end can be the one that is driven.

The neighbours in the table are close. The SMX 2600 lists the same main spindle and envelope at 15,800 kg (34,833 lb); the S weighs 16,200 kg (35,715 lb). The SMX 2600 ST is heavier again at 18,000 kg (39,683 lb), and its main spindle is listed at 690 N·m (509 ft-lb), slightly below the S. For larger work the SMX 3100 LS has a 12 in chuck with 1,203 N·m (887 ft-lb) at 3,000 rpm and 2,540 mm (100 in) of turning length, at 20,500 kg (45,195 lb).

The S occupies 5,700 × 3,011 mm (224 × 119 in) of floor and is 2,761 mm (109 in) high. DN Solutions' series description adds a B-axis and C-axis controlled in 0.0001-degree steps, a 12 station servo turret, a tool magazine at the front of the machine and an operation panel that moves side to side and adjusts in height. The table for the S gives no milling-spindle, magazine or travel figures, so those need to be requested.

Full Specifications

Parameter	Value
Chuck Size	10 in
Max Turning Diameter	660 mm (26 in)
Max Turning Length	1,540 mm (61 in)
Max Spindle Speed	4,000 rpm
Spindle Motor Power	30 kW (40 hp)
Spindle Torque	724 N·m (534 ft-lb)
Sub Spindle Speed	4,000 rpm
Sub Spindle Power	30 kW (40 hp)
Sub Spindle Torque	724 N·m (534 ft-lb)
Floor Space Required	5,700 × 3,011 × 2,761 mm (224 × 119 × 109 in)
Machine Weight	16,200 kg (35,715 lb)

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

Strengths & Limitations

Strengths

Second spindle carries the full main-spindle rating: 4,000 rpm, 30 kW (40 hp) and 724 N·m (534 ft-lb)
660 mm (26 in) of turning diameter and 1,540 mm (61 in) of turning length with a 10 in chuck
Main-spindle torque of 724 N·m (534 ft-lb) is above the 690 N·m (509 ft-lb) listed for the SMX 2600 ST
Weighs 16,200 kg (35,715 lb), against 18,000 kg (39,683 lb) for the SMX 2600 ST
Front tool magazine and movable, height-adjustable operation panel are listed for the series

Limitations

Both spindles stop at 4,000 rpm, which limits small-diameter work on either side
5,700 × 3,011 mm (224 × 119 in) of floor and 2,761 mm (109 in) of height are needed for the machine alone
For longer parts the SMX 3100 LS is required, with 2,540 mm (100 in) of turning length
The table has no milling-spindle, tool-magazine, turret or axis-travel rows for this model

Best For

Heavy two-sided parts roughed at 724 N·m (534 ft-lb) on both spindles Shafts up to 1,540 mm (61 in) long machined from both ends Forgings and billets up to 660 mm (26 in) in turning diameter Cycles balanced evenly between first and second operation

Frequently Asked Questions

01 Is the second spindle of the SMX 2600 S as strong as the main spindle?

Yes. Both are listed at 4,000 rpm, 30 kW (40 hp) and 724 N·m (534 ft-lb). Roughing can therefore continue after the part is transferred, instead of being confined to the first side.

02 What is the difference between the SMX 2600 S and the SMX 2600?

The SMX 2600 S has second-spindle rows in its table, with the same 4,000 rpm and 724 N·m (534 ft-lb) as the main spindle, and weighs 16,200 kg (35,715 lb). The SMX 2600 lists the same chuck size, turning diameter, turning length and main spindle, and weighs 15,800 kg (34,833 lb).

03 How does it compare with the SMX 2600 ST?

The two share the 10 in chuck, the 660 mm (26 in) turning diameter and the 1,540 mm (61 in) turning length. The SMX 2600 ST lists its main spindle at 690 N·m (509 ft-lb) and weighs 18,000 kg (39,683 lb). The SMX 2600 S has 724 N·m (534 ft-lb) and weighs 16,200 kg (35,715 lb).

04 What size and weight should the shop floor allow for?

The SMX 2600 S measures 5,700 × 3,011 × 2,761 mm (224 × 119 × 109 in) as length, width and height and weighs 16,200 kg (35,715 lb). Long stock and finished shafts also need handling space at the ends of the machine.

05 Is there a larger two-spindle model?

The SMX 3100 LS has a 12 in chuck and a main spindle of 30 kW (40 hp) and 1,203 N·m (887 ft-lb) at up to 3,000 rpm. The SMX 3100 LS turns 2,540 mm (100 in) in length with the same 660 mm (26 in) turning diameter and weighs 20,500 kg (45,195 lb).