To simulate combined testing for all of the important bearings on aviation engine main shaft, a shafting bearingtester is designed.
为模拟航空发动机主轴轴系所有重要轴承联合试验，研制了航空发动机轴系轴承试验机。
2
Macro examination, metallographic microscope, microhardness tester and X ray diffractometer were utilized to study the failure reasons for connecting rode bearing bush of automobile engine.