A multi-condition acoustic dataset of ball bearings for fault diagnosis-outer race pitting

The data were acquired from bearings with normal bearing faults, systematically and separately for each combination of three rotational speeds (800, 1000, and 1200 r/min) and three load levels (0%, 15%, and 30% of the rated torque, where 100% corresponds to 6 N·m). Acoustic signals were recorded synchronously using three microphones: two B&K Type 4966 and one CRY333.

The sensitivities were 49.76 mV/Pa (B&K at Position 2), 46.95 mV/Pa (B&K at Position 3), and 23.98 mV/Pa (CRY333at Position 1), respectively. The detailed microphone placement is described in our associated dataset article to be published in Data in Brief. For each of the nine operational conditions, a continuous 50-minute recording was captured at a sampling rate of 32,768 Hz.