Design of test rig for rolling bearing

Bearings are one of most important parts in the rotating mechanisms, which qualities directly influence the performances of machine tools. According to statistics, there are 30 percent of failures in the rotating mechanism to be relative to bearings. So, we must strictly check the quality of bearings before they are sold. Some specific characteristics are desired in an endurance test system to achieve the control requirements of a life test series. An individual test run takes a long time; therefore, the test machine must be capable of running unattended without experiencing variation in the applied test parameters such as load(s), speed, lubrication conditions, and operating temperature. The basic test system that could also be subject to fatigue, such as load–support bearings, shafts, and load linkages, must be many times stronger than the test bearings so that test runs can be completed with the fewest interruptions from extraneous causes. In addition, the test system must be easy to maintain and should be capable of operating reliably and efficiently for years to ensure long-term compatibility of test results. Design simplicity is a key ingredient in meeting all these demands. In this thesis, we mainly analyze some typical endurance test configurations and compare the different layouts to find out the lower power use configuration. Finally, we will present some rules about distance and power consumption.