EOS unveils M4 Onyx multi-laser AM machine at Formnext
EOS GmbH, headquartered in Krailling, Germany, launched its new EOS M4 Onyx Laser Beam Powder Bed Fusion (PBF-LB) Additive Manufacturing machine at this year’s Formnext 2025. Designed to meet the needs of energy, defence, space, aviation, and semiconductor sectors, the machine features a 450 x 450 x 360 mm build volume and six 400 W lasers, said to provide a 50 % higher throughput at a 30 % cost reduction.
A variant of the machine, the EOS M4 Onyx FLX, is also available and features four 1 kW beam-shaping lasers for enhanced speed.
“At EOS, our customers have always been at the heart of every innovation. The launch of the EOS M4 Onyx is a testament to our legacy as pioneers in Additive Manufacturing and our commitment to empowering manufacturers worldwide,” stated Marie Langer, CEO, EOS. “This optimised system was only made possible by the dedication and expertise of our global team, whose relentless pursuit of AM excellence continues to set new standards for the industry. Together, we are shaping the future of metal 3D printing productivity and responsible manufacturing, delivering the highest quality solutions for our customers.”
The EOS M4 Onyx enables continuous production via overnight starts and job changeovers in fewer than thirty minutes via the Grenzebach Dual Setup Station, while homogeneous gas flow and active temperature control ensure cleaner builds and shorter cycles. According to the company, the machine also offers up to 97 % system availability (OEE) with full-service contracts.
EOS also highlighted the M4 Onyx’s advanced software and processing intelligence, including:
- EOS Smart Fusion and Smart Fusion Replay, aimed at minimising supports and enhancing surface quality, thereby reducing post-processing, while beam-control capabilities focus on doubling build speeds and expanding geometric freedom
- EOS Build+ process developments and Siemens control system intended to improve productivity levels
- Open platform communications and web APIs enable integration with digital workflows, reportedly reducing order-to-build lead times by up to 30 %
- Early notification systems said to increase utilisation by up to 30 %
- Digital fingerprinting with statistical control reportedly cuts QA and non-destructive inspection efforts by up to 50 %
The EOS M4 Onyx is supported by advanced peripherals and collaborative alliances, including
- RFS Pro: Enables full powder reuse, eliminates consumables, and reportedly reduces hazardous waste by up to 90 %, simplifying maintenance and enhancing productivity and sustainability
- Volkmann Automated Powder Handling – EOS Edition: Delivers closed-loop, scalable powder management to enable continuous, cost-effective operation
- Grenzebach Dual Setup Station – EOS Edition: Automates job exchanges in under
thirty minutes
“At EOS, we live by our longstanding commitment to efficiency, safety, and innovation. Those pillars along with AM manufacturing innovations from partners like Volkmann and Grenzebach, have culminated in our most productive metal AM system to date,” explained Peter Hofbauer, programme manager for RFS Pro at EOS. “Beyond the technical milestone of our RFS Pro, our customers will benefit from our deep collaborative relationships to successfully scale their AM production with confidence and consistency.”
The EOS M4 Onyx will be commercially available in Q1 2026, with the EOS M4 Onyx FLX variant following in Q3 2026. At launch, materials include titanium, nickel, steel, and aluminium alloys, with additional options available upon request.
The EOS M4 Onyx is on display at EOS’s Formnext booth (Hall 11.1, D41.)
www.eos.info
