The wear behaviour of lead basis crank shaft bearing material

In this study, a new crank shaft mean bearing material was developed and the wearbehaviour of this material experimentally investigated which can be used instead of theconventional one. The crank shaft mean bearing have run under the different effects of loadsand strengths. From this point of view, the Pb-Sn-Cu-ZrO bearing material coated thesteel bearing surface by prowler spray process.The wear behaviour of bearing was conducted with using the real running simulationconditions of engine. The new developed and the original bearing of Opel engines were fixedto engine and run simultaneously. Thus, the run performance have compared at the sameconditions. During the run process, the spindle speed of crank shaft, the bearing load, the oiltemperature and oil pressures were kept constantly.The original crank shaft?s surface was chosen the counter face for the both materials.The shaft was unbalanced binding the weights equal distance from the crank shaft the bearingwere forced by optained centrifugal forces. The bearing lubrication was provided by theengine?s own lubrication system, whereas the oil temperature was fixed using a thermostatheater.The weight losses of the new developed and conventional bearings were determinatedafter 500 hours of run duration of the experimental setup. The SEM micrographs of the bothmaterial?s worn surfaces were studied and the war behaviour was discussed. In addition, theEDS, atomic structure and microhardness tests were conducted. According to the analysisresults, it is observed that the new developed bearing material have an obvious advantage tothe conventional one in the mean of wear resistance.Keywords: Crank Shaft Bearings, Pb, Powder sprey, Wear