Design and construction of boundary lubricated bearing test rig and wear analysis in earthmoving machinery

Tekin, Koray Serdar
Excavators which used as earthmoving machinery are exposed to heavy loads and operate long hours repeatedly. The forces that are transmitted trough pin bearings are observed to cause failure due to wear. Therefore, durability of bearings is crucial for excavators. The aim of this study is to perform wear analysis of excavator bearings running in boundary lubrication regime. A hydraulically powered test rig, which simulates the operating conditions of excavator bearings is designed and constructed. Wear is obtained applying both force and relative motion between pin and bearing on the test rig. Several tests are performed in this test bench. Force and material type are varied as the factors influencing wear. Results are compared and the effects of the factors on wear are determined.


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Citation Formats
K. S. Tekin, “Design and construction of boundary lubricated bearing test rig and wear analysis in earthmoving machinery,” M.S. - Master of Science, Middle East Technical University, 2010.