FARAX-Gearbox test rig composed of a suitable drive unit, a customized test gearbox, well-designed shafts, slave gearbox, proper lubrication unit, a central electronic cabinet with an extra measuring cabinet, to ensure precise measurements and conclusive testing with high reproducibility. Inline measurement includes load, torque and vibration, temperature as well as various lubrication methods. Test rigs with customized gearbox have been built and fatigue tests have been carried out.