DN Solutions Mill-Turn / Multi-Tasking Machines

DN Solutions SMX 2100 STB

Est. $340,000 - $470,000 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

22 kW (29 hp)

Max Turn Length

1,040 mm (41 in)

chuck size

10 in

max turning diameter

600 mm (24 in)

spindle torque

512 N·m (378 ft-lb)

How much does the DN Solutions SMX 2100 STB cost?

Estimated price range

Est.$340,000 - $470,000

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 2100 STB combines a 10 in main chuck with a faster second spindle in the short-bed SMX 2100 frame. The main spindle is rated 4,000 rpm, 22 kW (29 hp) and 512 N·m (378 ft-lb), the second spindle 5,000 rpm, 22 kW (29 hp) and 467 N·m (344 ft-lb), and the machine weighs 15,900 kg (35,054 lb).

Start with the envelope, since it decides whether the 10 in chuck is worth having. Maximum turning diameter is 600 mm (24 in) and maximum turning length 1,040 mm (41 in). Blanks that fill a 10 in chuck are heavy for their length, and the main spindle's 512 N·m (378 ft-lb) is there to rough them. Once a part has been cut down and handed over, the second spindle's 5,000 rpm is the more useful figure, because the diameters left to machine are smaller.

The STB weighs about 6% more than the SMX 2100 B, which has the same chuck and main-spindle figures at 15,000 kg (33,069 lb). Beyond the second spindle, no row in the table accounts for the difference. DN Solutions' series description names a 12 station servo turret as well as the B-axis head, without listing the models that include it, so the tool-carrier configuration of the STB is something to pin down with the supplier before comparing cycle times.

For the building, allow 4,845 mm (191 in) of length, 2,770 mm (109 in) of width and 2,777 mm (109 in) of height.

A shop that needs more than this spindle can give should look one size up. The SMX 2600 S offers 30 kW (40 hp) and 724 N·m (534 ft-lb) with the same 10 in chuck size, plus 660 mm (26 in) of turning diameter and 1,540 mm (61 in) of turning length.

Full Specifications

Parameter	Value
Chuck Size	10 in
Max Turning Diameter	600 mm (24 in)
Max Turning Length	1,040 mm (41 in)
Max Spindle Speed	4,000 rpm
Spindle Motor Power	22 kW (29 hp)
Spindle Torque	512 N·m (378 ft-lb)
Sub Spindle Speed	5,000 rpm
Sub Spindle Power	22 kW (29 hp)
Sub Spindle Torque	467 N·m (344 ft-lb)
Floor Space Required	4,845 × 2,770 × 2,777 mm (191 × 109 × 109 in)
Machine Weight	15,900 kg (35,054 lb)

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

Strengths & Limitations

Strengths

512 N·m (378 ft-lb) at the main spindle with a 10 in chuck, for first-side roughing of larger blanks
Second spindle rated 5,000 rpm, 22 kW (29 hp) and 467 N·m (344 ft-lb)
Turning diameter of 600 mm (24 in) within the short-bed length of 4,845 mm (191 in)
Cooling of spindle and feed axes with thermal compensation is listed for the series
Operation panel that slides side to side, swivels and adjusts in height, per the series description

Limitations

Main spindle speed stops at 4,000 rpm
15,900 kg (35,054 lb), about 6% above the 15,000 kg (33,069 lb) SMX 2100 B, on the floor
Turret, milling spindle and tool magazine have no rows in this model's table
The SMX 2600 S has 724 N·m (534 ft-lb) and 30 kW (40 hp) with the same chuck size, if torque is the priority

Best For

Heavier chucking parts roughed at 512 N·m (378 ft-lb) and finished on a 5,000 rpm second spindle Parts up to 600 mm (24 in) in diameter and 1,040 mm (41 in) long Production of two-sided parts that need B-axis milling Plants able to take a 15,900 kg (35,054 lb) machine

Frequently Asked Questions

01 What is the main-spindle rating of the SMX 2100 STB?

4,000 rpm, 22 kW (29 hp) and 512 N·m (378 ft-lb), with a 10 in chuck. That is the same main-spindle rating the SMX 2100 B lists. The SMX 2100, with an 8 in chuck, has 467 N·m (344 ft-lb) at up to 5,000 rpm.

02 What does the second spindle provide?

5,000 rpm, 22 kW (29 hp) and 467 N·m (344 ft-lb). It has the same power as the main spindle, with less torque and a higher top speed, which suits the smaller diameters usually left for the second operation.

03 How heavy is the SMX 2100 STB and how much room does it need?

It weighs 15,900 kg (35,054 lb) and measures 4,845 × 2,770 × 2,777 mm (191 × 109 × 109 in) as length, width and height. The SMX 2100 B, for comparison, weighs 15,000 kg (33,069 lb).

04 What does the table leave out for this model?

Milling-spindle speed and power, tool-magazine capacity, axis travels, rapid rates and any turret data. DN Solutions' series description mentions a 12 station servo turret and B-axis and C-axis control in 0.0001-degree steps, but without figures for the STB itself, so collect those details in the quotation.