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ISO 10816-1 Machine Vibration Limits

The document discusses ISO 10816-1 standards for vibration severity levels and acceptable ranges for different classes of machines. It provides a table with vibration velocity limits from 0.28 to 45 mm/s for small, medium, and large machines classified from class I to III based on their rigidity. It then defines each machine class, with class 1 being small individual parts, class 2 as medium motors up to 75kW, class 3 as large machines on rigid foundations, and classes 4 and 5 relating to large machines and drives on stiff or soft foundations.

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2K views1 page

ISO 10816-1 Machine Vibration Limits

The document discusses ISO 10816-1 standards for vibration severity levels and acceptable ranges for different classes of machines. It provides a table with vibration velocity limits from 0.28 to 45 mm/s for small, medium, and large machines classified from class I to III based on their rigidity. It then defines each machine class, with class 1 being small individual parts, class 2 as medium motors up to 75kW, class 3 as large machines on rigid foundations, and classes 4 and 5 relating to large machines and drives on stiff or soft foundations.

Uploaded by

Karthik Vk
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Velocity Velocity Range Limits and Machine Classes ISO Standard


Severity 10816-1
Large Machines
mm/s Small Machine Medium Machine
RMS class I Class II Rigid Supports Class III Less Rigid Supports Class III

0.28
0.45 Good
Good
0.71 Good
Good
1.12
Satisfactory
1.80
Satisfactory
2.80 Unsatisfactory
Satisfactory
4.50 (Alert)
Unsatisfactory
Satisfactory
7.10 (Alert)
Unsatisfactory
(Alert)
11.20
Unacceptable Unsatisfactory (Alert)
18.00 (Alarm) Unacceptable
(Alarm) Unacceptable
28.00 (Alarm) Unacceptable (alarm)
45.00

MACHINE CLASSIFICATION IN ACCORDANCE WITH ISO 10816-1

Class 1 : Individual parts of engines and machines, integrally connected with the complete machine
in its normal operating condition. (Production electrical motors of up to 15 Kw are typical
examples of machines in this category)

Class 2 : Medium-sized machines, (Typically Electrical Motors with 15 to 75 Kw output) without


special foundations, rigidly mounted engines or machines (up to 300 Kw) on special
foundations.

Class 3 : Large prime movers and other large machines with rotating masses mounted on rigid and
heavy foundation which are relatively stiff in the direction of vibration measurement.

Class 4 : Large prime movers and other large machines with rotating masses mounted on rigid and
heavy foundation which are relatively soft in the direction of vibration measurement. (for
ex. Turbo generator sets, especially those with light weight substructures).

Class 5 : Machines and mechanical drives system with unbalanceable inertia effects (due to
reciprocating parts), mounted on foundations which are relatively stiff in the direction of
vibration measurement.

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