ISO/TS 31657-2:2020

Plain bearings — Hydrodynamic plain journal bearings under steady-state conditions — Part 2: Functions for calculation of multi-lobed journal bearings ISO/TS 31657-2:2020

Publication date:   Jun 10, 2020

95.99   Withdrawal of Standard   Oct 16, 2025

General information

95.99   Withdrawal of Standard   Oct 16, 2025

ISO

ISO/TC 123/SC 8 Calculation methods for plain bearings and their applications

Technical Specification

21.100.10   Plain bearings

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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

NOW

WITHDRAWN
ISO/TS 31657-2:2020
95.99 Withdrawal of Standard
Oct 16, 2025

REVISED BY

PUBLISHED
ISO 31657-2:2025




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