DMG Mori DMU 20 Linear

$350,000 - $500,000 Updated 2026-03-13

Key Specifications

X Travel

200 mm (7.9 in)

Y Travel

200 mm (7.9 in)

Z Travel

280 mm (11.0 in)

Max Spindle

42,000 RPM

Spindle Taper

HSK-E32

Tool Capacity

16 tools standard (25 optional)

Overview

The DMG Mori DMU 20 Linear is a compact high-speed 5-axis machining center designed for ultra-precise production of small, complex components. Featuring linear motor drives on all three linear axes, the DMU 20 Linear eliminates ball screw backlash and wear for exceptional positioning accuracy and surface finish quality over the machine lifetime.

Travel sits at a compact 200 x 200 x 280 mm (7.9 x 7.9 x 11.0 in) with A-axis swivel of -10 to +130 degrees and 360-degree continuous C-axis rotation. The HSK-E32 spindle runs at 42,000 RPM, producing 8.5 kW (11 hp) and 3.5 Nm (2.6 ft-lb) of torque. Rapid traverse hits 80 m/min (3,150 ipm) on all linear axes -- exceptional speed enabled by the linear motor drives.

The standard tool magazine holds 16 tools expandable to 25. Maximum table load is 10 kg (22 lb) on a 210 mm diameter table. Running on CELOS with Siemens 840D sl control. The DMU 20 Linear is purpose-built for micro-machining and small-part precision work where surface finish and accuracy at microscopic scale matter.

Competitors include the Kern Micro and Kugler Microgantry in the ultra-precision 5-axis segment. New DMU 20 Linear machines price between $350,000 and $500,000. Despite its small work envelope, the precision capability and linear motor technology command premium pricing. Specs sourced from DMG Mori published data.

Full Specifications

Parameter	Value
X-Axis Travel	200 mm (7.9 in)
Y-Axis Travel	200 mm (7.9 in)
Z-Axis Travel	280 mm (11.0 in)
A Axis Swivel	-10 to +130 deg
C Axis Rotation	360 deg continuous
Max Spindle Speed	42,000 RPM
Spindle Taper	HSK-E32
Spindle Motor Power	8.5 kW (11 hp)
Spindle Torque	3.5 Nm (2.6 ft-lb)
Drive Technology	Linear motor drives (all linear axes)
Tool Capacity	16 tools standard (25 optional)
Tool Change Time	3.5 sec tool-to-tool
Table Diameter	210 mm (8.3 in)
Max Table Load	10 kg (22 lb)
Max Workpiece Diameter	210 mm (8.3 in)
Max Workpiece Height	200 mm (7.9 in)
Rapid Traverse Rate	80 m/min (3,150 ipm)
Positioning Accuracy	3 microns
Machine Weight	4,200 kg (9,259 lb)
CNC Control	CELOS with Siemens 840D sl
220 Mm	8.7 in.
370 Mm	14.6 in.
290 Mm	11.4 in.
283 Mm	11.1 in.
15 Kg	33.1 lbs.

Specifications sourced from us.dmgmori.com — verified 2026-03-28

Strengths & Limitations

Strengths

Linear motor drives on all axes eliminate ball screw backlash for exceptional accuracy and surface finish over machine lifetime
42,000 RPM HSK-E32 spindle enables micro-milling with very small tools at productive speeds
80 m/min rapids minimize non-cutting time during complex 5-axis repositioning on small parts
3-micron positioning accuracy enables ultra-precision work not achievable on conventional ball screw machines
Purpose-built for micro and small-part production with optimized thermal management
Siemens 840D sl control provides advanced 5-axis RTCP and path optimization for precision contouring

Limitations

200 x 200 x 280 mm travel envelope strictly limits the machine to small parts
10 kg table load only accommodates the smallest workpieces and fixtures
3.5 Nm spindle torque means only very light cutting loads are possible
$350,000-$500,000 pricing for a machine with this small envelope requires strong niche justification
16-tool standard magazine is limiting for complex multi-tool operations
HSK-E32 tooling is less common and more expensive than standard CAT 40 or HSK-A63

Best For

Watch and jewelry manufacturers requiring ultra-precise 5-axis machining on tiny components Medical device manufacturers producing dental implants, hearing aid components, and micro-surgical tools Mold and die shops machining micro-mold cavities and precision inserts requiring mirror finishes Electronics manufacturers producing precision connectors and micro-mechanical components Research and development labs requiring micro-machining capability with 5-axis flexibility Optical component manufacturers machining precision lens housings and mirror substrates

Frequently Asked Questions

01 What does a DMU 20 Linear cost?

New DMU 20 Linear machines price between $350,000 and $500,000. The linear motor drives and ultra-high-speed spindle command premium pricing despite the small work envelope.

02 What are linear motor drives?

Linear motor drives use electromagnetic force directly for axis motion without ball screws, belts, or gears. This eliminates mechanical backlash and wear, providing superior positioning accuracy, faster acceleration, and consistent precision over the machine lifetime.

03 Who buys the DMU 20 Linear?

Primarily watch/jewelry manufacturers, medical device makers (dental implants, hearing aids), micro-mold shops, and R&D labs. Any application where microscopic precision and surface finish quality on small parts justify the premium price.

04 Can it cut metals or just soft materials?

It cuts metals including steel, titanium, and hardened materials, but only at light depths due to the 3.5 Nm spindle torque. It excels at finishing operations and micro-milling with small-diameter tools where surface finish and accuracy matter more than material removal rate.