TS ISO 4378-5
Plain bearings - Terms, definitions, classification and symbols - Part 2: Friction and wear
This part of ISO 4378 specifies practical applications of the general symbols defined in ISO 4378-4, with
regard to the calculations, design and testing of plain bearings.
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About This Item
TS ISO 4378-5 is the standard for the practical use of the general symbols applied to friction and wear in plain bearings. It supports consistent technical communication in calculations, design work and testing by aligning the terminology and symbol usage associated with bearing behaviour.
Why friction and wear symbols matter in plain bearings
Plain bearings are load-carrying machine elements that support relative motion between contacting surfaces, typically without rolling elements. In this field, friction influences power loss, heat generation and running behaviour, while wear describes the gradual material loss or surface change that occurs during service. Standardised symbols help engineers describe these effects consistently in drawings, calculations and reports.
In general technical terms, friction is the resistance to motion between surfaces in contact, and wear is the progressive removal or alteration of material from those surfaces. Their behaviour depends on load, sliding speed, lubrication, surface finish and material pairing. The specific focus of this standard is the practical application of the general symbols defined in ISO 4378-4 for calculations, design and testing of plain bearings.
- Promotes consistent use of terms and symbols in technical documentation.
- Groups friction- and wear-related expressions into a common engineering language.
- Supports more comparable evaluation in plain-bearing calculations, design and test work.
- Builds on the general symbol system defined in ISO 4378-4.
- Publication Date: 27.08.2015
- Standard Status: U (Yürürlükteki Standard/Standard)
- Publisher: TSE
- Document Language: en
- ICS Classification: 21.100.10 Kaymalı Yataklar; 01.075 Karakter Sembolleri
- Pages: 30
- Source Standard: ISO 4378-5:2009
- International Equivalents: ISO 4378-5--
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