# ISO/TS 31657-4:2020 — Withdrawn and superseded ISO standards

For ISO/TS 31657-4:2020, item title is Plain bearings — Hydrodynamic plain journal bearings under steady-state conditions — Part 4: Permissible operational parameters for calculation of multi-lobed and tilting pad journal bearings; status code is 9599; successor is ISO 31657-4:2025; withdrawn / published date is 2020-06-10, recorded from its source on 2026-08-05.

- **Identifier:** ISO/TS 31657-4:2020 _(verified: appears in the quote below)_
- **Item title:** Plain bearings — Hydrodynamic plain journal bearings under steady-state conditions — Part 4: Permissible operational parameters for calculation of multi-lobed and tilting pad journal bearings _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 31657-4:2025
- **Withdrawn / published date:** 2020-06-10 _(verified: appears in the quote below)_

## What the source says

> 78797,TS,,ISO/TS 31657-4:2020,Plain bearings — Hydrodynamic plain journal bearings under steady-state conditions — Part 4: Permissible operational parameters for calculation of multi-lobed and tilting pad journal bearings,titre manque — Partie 4: titre manque,2020-06-10,1,['21.100.10'],ISO/TC 123/SC 8,9599,,[89000],['en'],6,"<p>This document establishes the permissible operational parameters in terms of guide values for the calculation of selected multi-lobed and tilting-pad journal bearings.</p><p>In order to attain a sufficient operational safety of multi-lobed and tilting-pad journal bearings by the calculation according to ISO/TS 31657-1, it is necessary for the operational characteristi

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).