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BS ISO 7902-1:2020

Current
Current

The latest, up-to-date edition.

Hydrodynamic plain journal bearings under steady-state conditions. Circular cylindrical bearings Calculation procedure
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

03-08-2020

This document specifies a calculation procedure for oil-lubricated hydrodynamic plain bearings, with complete separation of the shaft and bearing sliding surfaces by a film of lubricant, used for designing plain bearings that are reliable in operation.

This document specifies a calculation procedure for oil-lubricated hydrodynamic plain bearings, with complete separation of the shaft and bearing sliding surfaces by a film of lubricant, used for designing plain bearings that are reliable in operation.It deals with circular cylindrical bearings having angular spans, ?, of 360°, 180°, 150°, 120°, and 90°, the arc segment being loaded centrally. Their clearance geometry is constant except for negligible deformations resulting from lubricant film pressure and temperature.The calculation procedure serves to provide dimensions and optimize plain bearings in turbines, generators, electric motors, gear units, rolling mills, pumps, and other machines. It is limited to steady-state operation, i.e. under continuously driven operating conditions, with the magnitude and direction of loading as well as the angular speeds of all rotating parts constant. It can also be applied if a full plain bearing is subjected to a constant force rotating at any speed. Dynamic loadings (i.e. those whose magnitude and direction vary with time), such as those that can result from vibration effects and instabilities of rapid-running rotors, are not taken into account. NOTE Equivalent calculation procedures exist that enable operating conditions to be estimated and checked against acceptable conditions. The use of them is equally admissible.

Committee
MCE/12
DocumentType
Standard
ISBN
9780539058093
Pages
40
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
ISO 7902-1:2020 Identical

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