When precision matters most, professionals turn to EHRT. This German manufacturer has dominated the busbar processing landscape for over six decades. Their machines set the standard for accuracy, durability, and intelligent automation. Let’s explore what makes this company a true industry pillar.
From Bonn to Global Leadership: The EHRT Story
The journey began in 1963. Hans‑Dieter Ehrt founded an engineering office in Bonn, Germany, and soon developed the first bending machine specifically for copper bars. Nine years later, the office transformed into EHRT Maschinenbau GmbH. That same year, they introduced a groundbreaking innovation: the first bending machine with spring‑back compensation. This technology solved a persistent fabrication headache.
The CNC Revolution Takes Hold
By 1985, EHRT launched its first CNC‑controlled punching machine. The company never looked back. Under Thomas Ehrt’s leadership from 1995 onward, they developed the “Standard Series” bending machines and later expanded into punching equipment. Each decade brought fresh innovations. The gantry system arrived in 2015. The FlexPunch series followed in 2018.
A New Chapter Under Rittal Automation Systems
A pivotal moment came in 2022. EHRT became a subsidiary of Rittal Automation Systems (RAS), part of the Friedhelm Loh Group. This integration brought over 60 years of busbar processing expertise into a broader automation portfolio. Consequently, EHRT now offers not just standalone machines but fully integrated solutions for switchgear manufacturing.
The Product Portfolio: Modular Powerhouses
EHRT organizes its offerings around two core categories: bending machines and punching machines. Both lines share a modular philosophy. Customers configure each machine to meet their exact material types, thicknesses, and production volumes.
Bending Machines: Standard and Professional Lines
The bending portfolio divides into Standard and Professional series. Both handle copper, aluminum, and steel bars with exceptional force. The Standard line suits small to medium batches. The Professional line, however, delivers higher speed and greater durability. Some models achieve bending tolerances within ±0.20°.
Punching Machines: FlexPunch Series and Beyond
EHRT’s punching lineup features the FlexPunch series and the Professional Line. FlexPunch machines incorporate three CNC‑controlled axes, delivering virtually perfect accuracy. The Standard line processes materials from 3 mm to 16 mm thick, while the Professional line punches up to 20 mm material.
What Sets EHRT Apart: Proprietary Technology
Accuracy separates good machines from great ones. EHRT holds multiple patents for precision measuring systems. Founder Dieter Ehrt revolutionized angle measurement with prism technology. His inventions allow EHRT bending machines to measure bend angles with extraordinary precision.
Spring‑Back Compensation: A Game Changer
Copper springs back after bending. Ignore this phenomenon, and your parts will miss their target angles. EHRT machines automatically compensate for spring‑back, ensuring each bend matches the programmed dimension. From simple lateral bends to complex torsional shapes, the results remain consistent.
Software and Tooling Ecosystems
Hardware alone cannot drive efficiency. EHRT develops proprietary software for intuitive machine operation. Their tooling systems are optimized specifically for EHRT equipment. Furthermore, material feeding systems like FlexLoad enable semi‑automatic or fully automatic bar feeding to punching machines.
Recent Innovations and Market Presence
EHRT continues pushing boundaries. At Hannover Messe 2025, they launched the Bending Terminal—a fully electric bending machine designed for energy efficiency. They also debuted the Punching Terminal PT S4, which performs energy‑saving cutting and punching in seconds without time‑consuming rework.
Global Recognition
Industry analysts consistently rank EHRT among the top five CNC busbar machine manufacturers worldwide. Their machines serve high‑precision sectors including aerospace and specialized automotive manufacturing. Whether fabricating switchgear components or complex busbars for electric vehicle infrastructure, EHRT equipment delivers unmatched reliability.
Final Thoughts: A Legacy of Precision
EHRT has earned its reputation through decades of relentless innovation. From pioneering spring‑back compensation to integrating fully electric drives, they have consistently anticipated industry needs. Their modular machines, proprietary software, and patented measuring systems form a complete ecosystem. For manufacturers who demand perfection, EHRT remains the benchmark.
