This part of GB/T 2889 defines the most commonly used terms, definitions and classifications related to friction and wear of sliding bearings. This section gives abbreviations for certain terms and combinations of words, which can be used when there is no ambiguity. No definitions are given for terms that do not require explanation.
GB/T 2889.2-2020 history
2020GB/T 2889.2-2020 Plain bearings—Terms, definitions,classification and symbols—Part 2:Friction and wear