Vibration Evaluation Standard 11
C
C
B
B
7.1 4.5 3.5 2.8 2.3
A Rigid
Flexible
1.4
A Rigid
Flexible
Pumps > 15 kW radial, axial, mixed flow
Rigid
Flexible
0.71
Rigid
Flexible
Medium sized machines 15kW < Power ≤ 300 kW
Large machines 300 kW < Power < 50 MW
Integrated Driver
External Driver
Motor 160 mm ≤ H ≤ 315
Motor 315 mm ≤ H
GROUP 4
GROUP 3
GROUP 2
GROUP 1
Machinery Evaluation as per ISO 10816 Guide line: Zone A: Vibration of newly commissioned machines; Zone B: Machines considered acceptable for unrestricted long-term operation Zone C: Machines considered unsatisfactory for long-term continuous operation Zone D: Vibration values normally considered to be sufficient severity to cause damage to the machine
Guideline as per ISO 10816
18
D
VIBRATION : Velocity in mm/sec RMS
D
Foundation Support Machine Type GROUP
Measurement Frequency range: 10 Hz to 1000 Hz > 600 RPM* 2 Hz to 1000 Hz > 120 RPM* * Operating speed of machine
# Refer ISO 10816-1:1995 Standard on Mechanical vibration -- Evaluation of machine vibration by measurements on non-rotating parts. Visit: www.iso.ch # Refer ISO 13373-1:2002 for General Procedures for vibration measurement.
Note ISO 10816 precedes standards ISO 2372 and ISO 3945
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Vibration Evaluation Standard – Reciprocating machine Vibration Severity Grade
1,1 1,8 2,8 4,5 7,1 11 18 28 45 71 112 180
Overall vibration measurement measured on the machine structure Displacement in lm – micron (rms)
Velocity In mm/sec (rms)
Acceleration meter / sec² (rms)
£ 17,8 £ 28,3 £ 44,8 £ 71,0 £ 113 £ 178 £ 283 £ 448 £ 710 £ 1125 £ 1784 > 1784
£ 1,12 £ 1,78 £ 2,82 £ 4,46 £ 7,07 £ 11,2 £ 17,8 £ 28,2 £ 44,6 £ 70,7 £ 112 > 112
£ 1,76 £ 2,79 £ 4,42 £ 7,01 £ 11,1 £ 17,6 £ 27,9 £ 44,2 £ 70,1 £ 111 £ 176 > 176
ISO 10816 – 6: 1995
Machine Class* 1 A / B
2 A / B
C
3
A / B
4
A / B
C
5
A / B
6
A / B
C
7
A / B
C D
D
C D
D
C D
D
C D
Zone A: Vibration of newly commissioned machines; Zone B: Machines considered acceptable for unrestricted long-term operation Zone C: Machines considered unsatisfactory for long-term continuous operation Zone D: Vibration values normally considered to be sufficient severity to cause damage to the machine * depends on size, construction, assembly and speed. Refer ISO 10816-6 for details
Machinery Evaluation as per ISO 10816 Guide line:
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