Health Condition Monitoring and Control of Vibrations of a Rotating System through Vibration Analysis

Table 1

The ISO 10816 standard chart for different velocity ranges for machineries [35].

Velocity		Velocity range limits and machine class
RMS (mm/sec)	Peak (in/sec)	Class I (up to 15 kW)	Class II (15 to 75 kW)	Class III (>75 kW, rigid)	Class IV (>75 kW, soft)
0.28	0.02	Good	Good	Good	Good
0.45	0.03
0.71	0.04
1.12	0.06	Satisfactory
1.80	0.10		Satisfactory
2.80	0.16	Unsatisfactory (alert)		Satisfactory
4.50	0.25		Unsatisfactory (alert)		Satisfactory
7.10	0.40	Unacceptable (danger)		Unsatisfactory (alert)
11.20	0.62		Unacceptable (danger)		Unsatisfactory (alert)
18.0	1.0			Unacceptable (danger)
28.0	1.56				Unacceptable (danger)
45.0	2.51