British Standards Institution

Source:: ISO
Committee:: MCE/12 - Plain bearings
Categories:: Bearings. Plain
Comment period start date:: 26/11/2024
Comment period end date:: 19/01/2025
Number of comments:: 0

Comment by:

19th Jan

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 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 31657-1; calculation examples are also included there.

NOTE Equivalent calculation procedures exist that enable operating conditions to be estimated and checked against acceptable conditions. The use of them is equally admissible.

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Please email further comments to: debbie.stead@bsigroup.com

Standard timeline

1. Proposal (Complete)

Proposal start date:

2. Draft (Complete)

Draft start date:

26/09/2024

3. Public Comments

Public Comments start date:

26/11/2024

Public Comments end date:

19/01/2025

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Standards Development

BS ISO 31657-2 ISO 31657-2 Plain bearings. Hydrodynamic plain journal bearings under steady-state conditions. Part 2: Functions for calculation of multi-lobed journal bearings

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