Question 59Gas Turbine - 1st Asst/Chief

70% to pass

The lubrication principal used by the Kingsbury thrust bearing is which of the following?

ACylinder-shaped oil film.
BFree sliding oil film.
CSquare-shaped oil film.
DWedge-shaped oil film.
AI Explanation

The correct answer is D) Wedge-shaped oil film. The Kingsbury thrust bearing uses a wedge-shaped oil film to support the load. As the bearing shaft rotates, the wedge-shaped oil film is formed between the stationary and rotating surfaces, which generates a high-pressure region that can support the applied thrust load. This wedge-shaped oil film is a key principle that allows the Kingsbury thrust bearing to effectively and efficiently support axial loads. The other options are incorrect because they do not accurately describe the lubrication principle used by the Kingsbury thrust bearing. A cylinder-shaped oil film, a free sliding oil film, and a square-shaped oil film are not the mechanisms used in this type of bearing.

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Official Resources
46 CFR Machinery & Electrical 46 CFR Engineering USCG National Maritime Center
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