Correction to: Selection of Vibration Signal Features in the Frequency Domain to Determine the Level of Failure Severity in Spur Gearboxes (Journal of Vibration Engineering & Technologies, (2025), 13, 8, (629), 10.1007/s42417-025-02213-w)

The original published version of this article unfortunately contained an error. In the Experimental Bench Section, the document is currently stated as follows: The experimental data for this study were obtained from a custom-designed test bench, as shown in Fig. 1. The setup consists of a three-phase, 220 kW electric motor operating at 1200 kW is installed to impose varying load conditions. This should be corrected to: The experimental data for this study were obtained from a custom-designed test bench, as shown in Fig. 1. The test bench integrates multiple sensors to enhance monitoring capability, including a rotary encoder (E) and a laser-based displacement encoder (LE) for tracking rotational speed and shaft alignment; two acoustic emission (AE) sensors and two microphones (M) to capture high-frequency acoustic signatures from the gearbox; and three voltage sensors (V) and three current sensors (CC) installed on each phase of the power supply lines to monitor the motor's electrical performance. The setup consists of a 1.5 kW, 1200 rpm, three-phase 220 V electric motor and a 1.5 kW variable frequency drive. The motor is coupled to a single-stage spur gearbox; the gears have Z₁ = 32 teeth and Z₂ = 48 teeth. The load is simulated by an 8.83 kW electromagnetic brake installed on the output shaft. The original article has been corrected.