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Category: Faults

Vibration Experts

Unbalance Force

Unbalance Force

Unbalance Force Unbalance force in rotors lead to premature machine failure. Excess unbalance forces cause bearings and seals to fail prematurely. Excessive vibration can cause other problems. It is therefore…
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measuring phase with a keyphasor

Measuring Phase with a Keyphasor

How do you use a Keyphasor(TM) to measure phase? We’ll answer that question in this short post. Proximity probes, also called eddy current probes or displacement probes, are used to…
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eccentric sheave

Eccentric Sheave

Diagnosing an eccentric sheave with vibration analysis is easy to do. But you have to be careful not to mistake it for other common machine faults. For example, unbalance also…
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Diagnosing Bent Shaft

Diagnosing a bent shaft with vibration analysis is easy to do, especially when you can visualize it using 3D animations. Sign up for a course and learn more: https://www.zencovibrations.com/events/ A…
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Detecting Angular Misalignment

Why does angular misalignment produce a 1x (shaft rate) vibration in the axial direction? Why is this vibration out of phase on the bearings on either side of the coupling?…
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