EOS M 400-4 – The Ultra-Fast Quad-Laser System with a Large Building Volume

Additive manufacturing system for the industrial production of high-quality metal parts 

Designed for industrial applications, the EOS M 400-4 offers a large building volume of 400 x 400 x 400 mm combined with four lasers for up to four times higher productivity.
It shatters boundaries of manufacturing as it meets the most demanding requirements of modern production environments in terms of efficiency, scalability, usability and process monitoring. The modular platform design can easily be integrated into existing production environments and flexible consolidated with future innovation.

Productivity in a new dimension

While the “sister system" EOS M 400 runs with a single 1000W laser, the EOS M 400-4 multiplies the capacity of the EOS M 290, both ensuring  proven DMLS quality. All EOS M 290 processes can be transferred to the EOS m 400-4 while retaining equivalent part properties

EOS M 400-4: Four lasers for more productivity

Building volume plus speed

  • Large building volume of 400 x 400 x 400 mm with four 400 watt lasers operating independently
  • The four precise 400 watt fiber lasers operate in a 250 mm x 250 mm square each with an overlap area of 50 mm
  • High build rate of 100 cm³/h

4 Lasers – First-class DMLS quality

  • Exceptional beam and power stability provides highest DMLS part quality
  • All processes running on the EOS M 290 can be transferred to the EOS M 400-4 and deliver equivalent part properties.
  • New EOS ClearFlow Technology ensures consistent process gas management for ideal build conditions
  • Extensive monitoring features ensure high process stability and part quality

High productivity platform with smart process flow

  • Wide range of materials: from light metals to stainless and tool steels to superalloys
  • Easy handling through a high degree of automation in workflow and operation
  • Intuitive user interface, flexible software tools and a variety of additional equipment fulfill industrial production requirements

Technical Data

EOS M 400-4

Building volume

400 mm x 400 mm x 400 mm (15.8 x 15.8 x 15.8 in)
(height includes build platform)

Laser type Yb-fiber laser; 4 x 400 W
Precision optics 4 F-theta-lenses; 4 high-speed scanners
Scan speed up to 7.0 m/s (23 ft/s)

Focus diameter

approx. 100 µm (0.004 in)

Power supply

3 x 50 A

Power consumption max. 45 kW / typical 22 kW
Compressed air
7,000 hPa; 20 m³/h (102 psi; 706 ft³/h)

Dimensions (W x D x H)


4,181 mm x 1,613 mm x 2,355 mm (164.6 x 63.5 x 92.7 in)

Recommended installation space

min. 6.5 m x 6 m x 3.3 m (256 x 236 x 130 in)


approx. 4,835 kg (10,659 lb)


EOS RP Tools; EOSPRINT; EOS ParameterEditor; EOSTATE Everywhere; EOSTATE PowderBed; Materialise Magics RP and modules

Optional accessoires

EOSTATE Laser, IPM M Powder Station L*, IPM M UnpackStation L*
* Currently under development

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More information

EOS M 400

Additive Manufacturing System for the Industrial Production of High-Quality Large Metal Parts

EOS M 290

Highly productive system for the Additive Manufacturing of high-performance metal components

EOS M 100

Ideal entry level model for industrial 3D printing of complex metal parts by means of Additive Manufacturing


EOS software solutions make it easier to prepare CAD data for laser sintering and support the process and quality assurance.


The global EOS Service Organisation offers support for all performance and lifecycle phases of your Additive Manufacturing System

Our vision of the future

Industrial 3D printing - The new era has begun


Any questions?
Just contact us.