Vibration Data for Axial Ball Bearings and Spall Faults

The datasets involve vibration measurements for axial ball bearings in healthy and faulty conditions. The faulty conditions are for artificially-seeded spall defects at the outer and the inner races. There are 28 datasets in two groups. The first group is for a fault-free condition and it consists of four datasets. The second group involves 24 datasets for six levels of fault-sizes and four loading groups. The file is a standard MATLAB data file ".mat". The file name for each dataset follows the following format: (NX_R_S_T.mat), where X indicates the applied axial load in kN, R is the spindle speed in revolutions per minute, S is the spall fault width in millimeters and T is the spall location on the outer or the inner races. Each dataset has a single time series for the axial vibration from an accelerometer mounted on the bearing outer race (radial axis). Both of the spindle speed and the axial load are time invariant within the dataset. All datasets are sampled at 25.6 kHz for a duration of 30 seconds.