Rathbone Chart
The Rathbone Chart, devised by T. C. Rathbone in 1939, compares overall vibration velocity to varying degrees of machine smoothness. Rathbone made no inferences as to frequency content of the vibration, or to machine size. The Rathbone Chart is considered obsolete today, and is presented here only for historical interest.
|
Machine Running Condition |
Overall Vibration Velocity |
|
Very Rough
|
0.628 ips peak
|
|
Rough
|
0.314 ips peak
|
|
Slightly Rough
|
0.157 ips peak
|
|
Fair
|
0.0785 ips peak
|
|
Good
|
0.0392 ips peak
|
|
Very Good
|
0.0196 ips peak
|
|
Smooth
|
0.0098 ips peak
|
|
Very smooth
|
0.0049 ips peak
|
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