This part of GB/T 9239 specifies the requirements for the following:
a) identifying errors in the unbalance measuring process of a rotor;
b) assessing the identified errors;
c) taking the errors into account.
This part specifies balance acceptance criteria, in terms of residual unbalance, for both directly after balancing and for a subsequent check of the balance quality by the user.
For the main typical errors, this part lists methods for their reduction in Annex A.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1925 Mechanical vibration - Balancing - Vocabulary )
ISO 1940-1 Mechanical vibration - Balance quality requirements for rotors in a constant (rigid) state - Part 1: Specification and verification of balance tolerances )
ISO 11342 Mechanical vibration - Methods and criteria for the mechanical balancing of flexible rotors )
ISO 21940-21 Mechanical vibration - Rotor balancing - Part 21: Description and evaluation of balancing machines
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 1925 apply.
4 Balance error sources
GB/T 9239.14-2017 The following standards are cited：
GB/T 9239.14-2017 Cited by the following standards：
