Lubricant (grease) is a vital requirement of ball bearing system. Grease not only protects ball bearing from wear and tear but performs various other functions that are essential for proper functioning of ball bearings. The lubricant (grease) under different conditions attains different properties which in turn affect the performance of the ball bearings. The effect of the condition of the lubricants on the performance of the ball bearings is well documented. the work reports about the investigation of ball bearing using shock pulse method by using two different instruments (Tester T2000 Model and Shock Pulse Meter 43A) of different operating conditions of ball bearing the condition such as used the quantity of grease as different percentage (0%, 25%, 50%, 75%, 100%) and bad quality grease (burn grease) at different rpm at a fixed load (10kg) and compare the normalized shock pulse value (dB) at different operating conditions. This method uses a piezo-electric accelerometer superimposed electrically as well as mechanically to about 32 kHz of resonant frequency. The result will help in bearing related to quantity as well as quality condition based maintenance choosing the optimum conditions for detecting the lubricant problem in ball bearing.
Discussion: “Endurance of Aircraft Gas Turbine Mainshaft Ball Bearings-Analysis Using Improved Fatigue Life Theory: Part 1—Application to a Long-Life Bearing” (Ioannides, E., Harris, T. A., and Ragen, M., 1990, ASME J. Tribol., 112, pp. 304–308) and “Endurance of Aircraft Gas Turbine Mainshaft Ball Bearings-Analysis Using Improved Fatigue Life Theory: Part 2—Application to a Bearing Operating Under Difficult Lubrication Conditions” (Harris, T., Ioannides, E., Ragen, M., and Tam, H., 1990, ASME J. Tribol., 112, pp. 309–311)