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This Document Has Been Superseded
A newer publication replaces it: BSI BS ISO 31657-3
Plain bearings. Hydrodynamic plain journal bearings under steady-state conditions -- Functions for calculation of tilting pad journal bearings
This document specifies the characteristic values for selected tilting-pad journal bearings with four or five centrally or eccentrically supported tilting pads and with angular spans of pad sliding surfaces of ? = 80°, 60° and 45°.
The functions plotted and listed in table form below are required for the *operationally safe design* of hydrodynamic tilting-pad 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.
The calculation method described in ISO/TS 31657-1 can also be used for other tilting-pad journal bearing designs, if the numerical solutions of the basic equations are available in the same manner for these designs.
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