Let’s look at a typical process pump running between 900 and 4,000 RPM as it passes through the four stages of bearing failure. Starting with the baseline condition for a good bearing, we see a significant amount of overall vibration. However, it is important to note that the PeakVue value is at zero. This is because a good machine, properly installed and well lubricated, should not be impacting. Therefore we can state the Zero Principle – PeakVue on a good machine should be at or close to zero.