The configuration of a 3MW gearbox is a three-stage, two planetary and one parallel stage with ratio 1:112.63 (Step-up).
Nominal HSS speed is 1450 RPM and Nominal Torque at HSS is 34 kN-m. High speed pinion tooth flank failure occurred during
the test. The Root cause failure analysis (RCFA) revealed the problem being inclusion of Aluminum oxide during the gear
manufacturing process. Analysis, results and discussions explain the vibration behavior between failure initiation and potential
failure.