ISO 20816-1:2026 / Measurement and evaluation of machine vibration - General guidelines - Ed. 2 Oct 2026

ISO 20816-1:2026 / Measurement and evaluation of machine vibration - General guidelines - Ed. 2 Oct 2026

ID 27417 | 05 Novembre 2026 / Preview attached

ISO 20816-1:2026
Mechanical vibration - Measurement and evaluation of machine vibration
Part 1: General guidelines
Published (Edition 2, 2026) 
Publication date: 10.2026

This document establishes general principles for the measurement and evaluation of vibration using measurements made on rotating or non-rotating parts of complete machines.

It is applicable to vibration measurements on non-rotating parts and to both absolute and relative radial shaft vibration with regard to the monitoring of radial clearances, but does not apply to axial shaft vibration, unless otherwise stated.

The evaluation criteria, which are presented in terms of both vibration magnitude and change in vibration, relate to both operational monitoring and acceptance tests.

They have been provided primarily with regard to securing reliable, safe, long-term operation of the machine while minimizing any adverse effects on associated equipment. This document also gives guidance on setting operating limits.

NOTE 1       
The evaluation criteria for different machine types are included in other parts of the ISO 10816 series and the ISO 20816 series.

NOTE 2       
The term “shaft vibration” is used throughout the ISO 10816 series and the ISO 20816 series because, in most cases, vibration measurements are made on machine shafts. However, the ISO 10816 series and the ISO 20816 series are also applicable to measurements made on other rotating elements of the machine if such elements are found or known to be more suitable, provided that the guidelines set in this document are met.

The evaluation criteria are only applicable to the vibration produced by the machine itself and not the vibration transmitted to it from outside.

This document does not apply to torsional vibration.

NOTE 3       
For information regarding the evaluation of torsional vibration, see e.g. ISO 3046-5, ISO 22266-1 or VDI 2039.
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This document was prepared by Technical Committee ISO/TC 108, Mechanical vibration, shock and condition monitoring, Subcommittee SC 2, Measurement and evaluation of mechanical vibration and shock as applied to machines, vehicles and structures. 

This second edition of ISO 20816-1 cancels and replaces the first edition (ISO 20816-1:2016), which has been technically revised.

The main changes are as follows:

- Introduction was shortened;
- wording in Clause 1 was aligned with ISO directives;
- references in Clause 2 were updated;
- terms in Clause 3 were added and definitions in 4.3.1 removed;
- Figure 5 and Figure 6 were updated;
- 4.8 and 4.9 were added with content from ISO/TR 19201;
- content of B.4 was deleted and merged with B.5;
- Figure C.1 was added;
- C.2 was removed;
- Annex E was added with content from ISO/TR 19201;
- wording in the document was aligned with ISO 20816-3;
- Bibliography was updated;
- document editorially revised;
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