ISO/TS 31657-2:2020Withdrawn

Plain bearings — Hydrodynamic plain journal bearings under steady-state conditions — Part 2: Functions for calculation of multi-lobed journal bearings

titre manque — Partie 2: titre manque

This edition has been replaced by ISO 31657-2:2025.

Abstract / scope

This document specifies the characteristic values for selected two-, three- and four-lobe bearings.

The functions plotted and listed in table form below are required for the operationally safe design of hydrodynamic multi-lobed journal bearings according to ISO/TS 31657-1. They are based on the presumptions and boundary conditions indicated there and only apply to stationary operating states. The symbols used are explained in ISO/TS 31657-1; calculation examples are also included there.

Life cycle

Replaced by

ISO 31657-2:2025PublishedPlain bearings — Hydrodynamic plain journal bearings under steady-state conditions — Part 2: Characteristic values for calculation of multilobed journal bearingsInternational Standard · Published 16 Oct 2025 · ISO/TC 123/SC 8