THE INTERNATIONAL CONFERENCE OF THE CARPATHIAN EURO-REGION SPECIALISTS IN INDUSTRIAL SYSTEMS 6th edition RESEARCH ON THE EFFECTS OF ELECTRICAL DISCHARGES THROUGH ROLLER BEARINGS PART I

The present study examines the effects of electrical discharges into the rolling paths and the bearing rolling bodies. The number, the size and the shape of the craters, generated by the electrical discharges, have been microscopically analysed in different lubrication conditions, while varying the power and the amperage of the discharging electrical current. This study is essential as a very large part of the electrical rotative machines are withdrawn from usage due to the damage of their bearing components. Very frequently, the above issues are worsening by the power peaks which are a consequence of the function of electronic converters commanded through impulses. These effects are similar with the electrical discharges through bearings. The knowledge the causes and the analyze of the effects through laboratory tests lead to very useful information regarding the decrease or even eradication of these effects. Key words: Rolling bearings, electrical current, electrical discharges 1