Two slide chart design aids are developed for tilting pad thrust bearings in order (a) to give guidance on load-carrying capacity, considering such limits as allowable oil film thickness and maximum pad temperature, and (b) to enable the designer to estimate directly the total power loss in double thrust bearing assemblies. These slide charts (each consisting of two sheets) enable variables such as pad size, number of pads, oil specification, specific load, and collar speed to be considered individually. Thus the designer has a tool from which he can obtain a ‘feel’ for bearing performance and see at a glance the interplay between all the variables.
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References
1.
BielecM. K.LeopardA. J. ‘Tilting pad thrust bearings: Factors affecting performance and improvements with directed lubrication’, Paper 13 at this Convention.
2.
MartinF. A. ‘A graphical method for predicting the performance of circumferentially grooved hydrodynamic journal bearings under steady loads’, Lubric. and Wear Fourth Conv., Proc. Instn mech. Engrs1965–66180 (Pt 3K), 160.
3.
RaimondiA. A. ‘The influence of longitudinal and transverse profile on the load capacity of pivoted pad bearings’, Trans. Am. Soc. mech. Engrs19603, 265.
4.
‘Tilting pad thrust bearings’, Designers' handbook No. 5 (The Glacier Metal Co. Ltd.).
5.
DorfmanL. A.Hydrodynamic resistance and heat loss of rotating solids1963 (Oliver & Boyd Ltd.).
6.
BrandonR. E.BahrH. C. ‘Load capacity tests on tapered land and pivoted shoe thrust bearings for large steam turbine application’, J. Engng Pwr, Trans. Am. Soc. mech. Engrs1959 (April), 208.
