Steam Plants (Boilers & Turbines) USCG Question #800 (Set 27)

A Kingsbury, or pivot shoe type thrust bearing, can bear much greater loads per square inch of working surface than can parallel surface bearings because provisions are made in the Kingsbury bearing __________.

Official USCG Answer & Rule Citation

Correct Answer: Option C — for the shoes to tilt slightly, thereby allowing the formation of a wedge shaped oil film under a thrust load

Kingsbury thrust bearings utilize pivoting shoes that tilt under load to draw lubricating oil into a wedge-shaped film, generating hydrodynamic pressures capable of supporting vastly higher loads per square inch compared to flat, parallel surface bearings.

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