MEXS 400 – A global innovation in quality assurance

Keller & Kalmbach and LAW NDT found MEXS Vertriebs GmbH

Unterschleissheim, Germany, February 25, 2025: Keller & Kalmbach and LAW NDT have formed a joint venture, MEXS Vertriebs GmbH, to set new standards in modular measurement and testing technology for fasteners with the MEXS 400 testing system. MEXS Vertriebs GmbH is 40% owned by Keller & Kalmbach and is based on a close cooperation between both partners to revolutionize industrial quality management.

The MEXS 400 is a modular inspection system specifically designed for 100% inspection of fasteners and other high-precision components. Its main strength lies in its exceptionally fast reconfiguration: the inspection stations are mounted on mobile trolleys and can be exchanged within minutes. The tool-less exchange of material carriers also allows for rapid reconfiguration of inspection processes, significantly increasing production flexibility. Thanks to this innovative design, companies can structure their test processes flexibly while maintaining high productivity. The ability to service test stations outside of the running process reduces downtime and increases efficiency.

"With the MEXS 400, we have developed a completely new generation of testing machines that offer maximum flexibility and efficiency. We have been able to incorporate more than 90% of the requirements of our customers, from machine operators to top management," explains Reza Mahllati. Mahllati, a German-educated engineer, has extensive international experience in sales of DMG MORI machine tools. On July 1, 2019, he took over LAW NDT, a renowned company in the field of special-purpose machines. LAW NDT specializes in the production of quality inspection machines for fasteners. "From my 25 years of sales experience, I knew that the machine operators were the real experts. We worked directly with them to develop a comprehensive list of suggestions for improvement. Together with our 36 years of experience in special machines, we developed the MEXS 400 - an absolute world first".

Such a groundbreaking innovation required professional distribution. As a result, Reza Mahllati approached his long-time business associate from his DMG MORI days, Ralph Christnacht, to find a distribution partner. Christnacht, who had a long-standing personal relationship with Dr. Florian Seidl, owner of Keller & Kalmbach, initiated the collaboration. Seidl recalls: "In the summer of 2024, Ralph Christnacht informed me that one of his former business partners had developed a revolutionary new testing machine and was looking for a partner to market it. In the fall of 2024, I had my first discussions with Reza Mahllati. Our head of technical development and head of quality assurance at Keller & Kalmbach were immediately impressed by this completely new development. We quickly decided to form a joint venture to bring to market this modular, highly flexible and user-friendly machine, which offers numerous advantages over conventional screw testing systems. The result is our joint venture, MEXS Vertriebs GmbH, in which Keller & Kalmbach holds a 40% stake.

Ralph Christnacht, an entrepreneur, company founder and industry expert in machine tools and automation - including executive positions at DMG MORI - will lead the sales effort. Later this year, the joint venture will expand its manufacturing capabilities to produce a larger volume of machines. "The MEXS 400 offers immense benefits to companies in a wide range of industries, and I look forward to successfully establishing it on a global scale," says Ralph Christnacht.

Experts agree that this concept offers significant benefits to any user who manufactures, inspects or uses fasteners and other high-value components.

For more information on the MEXS 400 and its benefits, please visit the official website at https://law-ndt.de/anlagen-window/mexs400/.

The MEXS 400 will be unveiled to the public at the Keller & Kalmbach booth at the Fastener Fair in Stuttgart, Germany, March 25-27, Hall 3, Booth No.1656.