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The 7th axis, also known as a robot transfer unit, extends the robot’s effective workspace by up to a factor of four. The linear axis is primarily manufactured from tribologically optimised polymers, which reduce friction and wear, resulting in lower operating costs and minimal maintenance requirements.
Integration is supported through dedicated adapter kits for igus® robots as well as systems from Universal Robots, Epson, Omron, Franka Emika, Doosan, and other common robot platforms. The axis can be controlled via digital I/O interfaces, URCap, or the igus Robot Control (iRC) system, enabling flexible implementation within existing automation architectures.
The linear axis supports stroke lengths of up to 6,000 mm, allowing for scalable workspace expansion in extended production layouts. Other key features are a precision of 0.3mm as well as a payload of up to 55kg.

With the igus® Robot Control software, you can digitally test and validate your 7th‑axis configuration before making any investment. The platform allows you to programme your application in advance, ensuring that motion sequences, cycle times and workspace requirements are fully optimised for your process.
The free, licence‑free software enables you to evaluate all igus® kinematics, including robots, linear axes and AGVs, without any hardware. A library of pre‑programmed projects is included for every igus® robot type, making it easy to explore different automation concepts or adapt existing templates to your needs.
An intuitive 3D interface provides real‑time visualisation and simulation of the robot’s movements, helping you verify reach, avoid collisions and fine‑tune your workflow before deployment.

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