Deep-groove Ball Bearing 6314 Dataset

A dataset was developed to investigate the vibration behavior of type 6314 rolling element bearings under controlled operating conditions. The objective is to analyze the differences between healthy and artificially damaged bearings and to provide a benchmark dataset for developing and evaluating bearing fault diagnosis methods under controlled laboratory conditions. The experiments are conducted on a dedicated bearing test rig, where baseline measurements of healthy bearings are first acquired. Subsequently, artificial fault conditions are introduced to generate reproducible damage scenarios, enabling a systematic analysis of vibration signatures under different bearing health states. 

As shown in the figure on the right, the APS 58 bearing test rig consists of an electric drive unit, a bearing test housing, and two pneumatic actuators for applying controlled radial and axial loads to the test bearing. The experimental investigations are performed using SKF 6314 deep-groove ball bearings. In addition to healthy reference bearings, artificially damaged specimens are investigated. The faulted bearings include laser-induced defects on the inner raceway and outer raceway, as well as corrosion-induced damage to represent different fault mechanisms. For the outer raceway fault condition, the bearing is installed such that the defect is located within the primary load zone to ensure consistent fault excitation during operation. The rotational speed of the test bearing is measured using an Autosen A0014 optical sensor, with the speed signals acquired at a sampling frequency of 1 kHz. Vibration measurements were performed using a PCB 603C01 ICP piezoelectric accelerometer mounted on the bearing housing. The vibration signals were acquired through a National Instruments (NI) data acquisition system at a sampling frequency of 51.2 kHz for healthy, outer ring and inner ring faults and at 10 kHz for corrosion faults. Data was collected over a period of 120 s for the fault-free condition as well as for faults on the outer and inner rings, while data for corrosion-related faults was collected over a period of 60 s.

Controlled radial and axial loads are applied using the pneumatic actuators, while the corresponding forces are measured using HBM U2B tension/compression force transducers. The force sensors provide a radial measurement range of ±20 kN and axial measurement range of ±10 kN. The acquired force signals are processed and recorded using MATLAB/Simulink.