Investigation into wear mechanisms of the bearing raceway used in bucket wheel excavators

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• 作者：Tadeusz Smolnicki^a ; ^{tadeusz.smolnicki@pwr.edu.pl" class="auth_mail" title="E-mail the corresponding author} ; Grzegorz Pękalski^a ; ^{grzegorz.pekalski@pwr.edu.pl" class="auth_mail" title="E-mail the corresponding author} ; Joanna Jakubik^b ; ^{joanna.jakubik@tu-dresden.de" class="auth_mail" title="E-mail the corresponding author} ; Piotr Harnatkiewicz^a
• 关键词：Large size bearing ; Deformation of raceway ; Machines of open-pit mining
• 刊名：Archives of Civil and Mechanical Engineering
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：17
• 期：1
• 页码：1-8
• 全文大小：2282 K

文摘

This article presents the macro- and microstructural analysis of bearing raceways. Raceways of bearings, taken from two machines which had worked 100,000 and 30,000 h, were examined. This provided crucial information on the exploitation history of both bearings, which is especially important for the future design process. After these initial macroscopic observations, it was determined which areas of the bearing had been most severely worn. This was indicated by the areas in which the chassis stiffness was highest. Further microscopic analysis of the individual bearing sections was useful for the identification of the dominating, destructive mechanisms in these areas.