Nowadays, it is important to monitor the correct operation and reliability of machines, because with each failure of the company's machine, financial losses arise, which must be minimized. Therefore, prediction in the field of machine diagnostics and early intervention in the event of an error is very important. The choice of measurement and evaluation method is an equally important aspect of diagnostics, as only the right combination of methods and evaluation tools can guarantee timely diagnostic intervention.The dissertation focuses on multi-parameter diagnostics of bearings, which form an important part of every device. Theoretical analysis of the work offers a basic division of vibrodiagnostics, tribodiagnostics, a basic overview of diagnostic methods that are used in this direction.The methodology of the work describes the implementation of an experiment for the diagnosis of a ball bearing. The bearings were damaged by various mechanical defects, namely: the bearing was loaded, the bearing was damaged by corrosion, the bearing was damaged by dirt, the bearing was lubricated with water and the bearing was operated without lubrication.For the purposes of the experiment, we evaluated the vibrations of the device and bearings, and monitored the temperature field for each experiment and its changes. At the end of each measurement, a sample of used lubricating oil was taken for the purpose of its evaluation.The result of the work is the determination of the diagnostic procedure for the above-mentioned bearing damage. It was found that the damage manifested itself in the spectrum of vibrations but also in the change in temperature during the corroded bearing. However, the greatest mechanical damage occurred with the bearing, which operated without lubrication. However, this was reflected in the overall vibration spectrum only in the envelope method, which we used to evaluate bearing defects.The evaluation of the tribological aspect showed the greatest degradation of the oil in the evaluation of the corroded deposit.