GB/T 41850.1-2024 Mechanical vibration—Measurement and evaluation of machine vibration—Part 1:General guidelines

Scope

This document specifies the general conditions and procedures for measuring and evaluating machine vibration on the rotating, non-rotating, and non-reciprocating components of the entire machine. This document applies to the measurement of absolute radial shaft vibration and relative shaft vibration during radial clearance monitoring, but does not apply to axial shaft vibration. General evaluation criteria include two aspects: vibration magnitude and vibration change, which are used for operation monitoring and acceptance testing. The evaluation criteria primarily aim to ensure the reliable, safe, and long-term operation of the machine while minimizing adverse effects on related equipment. This document also provides guidelines for setting operational limits.
Note 1: Other parts of ISO 20816 contain evaluation criteria for different types of machines. Chapter 6 of this document provides guidelines for evaluation criteria.
Note 2: Since measurements are typically conducted on the machine shaft in most cases, the term "shaft vibration" is applied throughout ISO 20816. However, if other rotating components are found to be more suitable, the ISO 20816 series also applies to measurements on such rotating components, provided that the guidelines are followed.
ISO 20816 considers operation monitoring as vibration measurements conducted during normal machine operation. ISO 20816 permits the use of different measurement quantities and methods, provided that these measurement quantities and methods are clearly defined and their limitations are pointed out, so as to fully understand the interpretation of the measurements.
Evaluation criteria only relate to the vibration generated by the machine itself, and not to vibration externally transmitted to the machine.
This document does not consider torsional vibration.
Note 3: For torsional vibration, refer to ISO 3046-5, ISO 22266-1, or VDI 2039.

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