Absolute Vibration Levels

Once a specific machine problem is identified by its vibration signature, the next question should be "Is the problem bad enough to require maintenance?". There is no general agreement on how to do this but we will look at several approaches that have proven to be reasonably successful in practice:

Rathbone Chart

ISO Standard 2372

MIL-STD-167-1 and MIL-STD-167-2

NAVSEA Technical Specification S9073-AX-SPN-010/MVA

Commercial Standards (DLI Machinery Vibration Severity Chart)

DLI Engineering provides products and services for Predictive Maintenance including vibration analysis instruments, monitoring and diagnostic software, and consulting for CBM programs.

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