Which of the following methods is used to securely fasten the Babbitt lining of a reduction gear bearing to its shell?

Correct Answer: Option C — The Babbitt is centrifugally spun into the bearings or cast under a pressure head.

Centrifugal casting or pouring under pressure ensures a dense, void-free metallurgical bond between the Babbitt alloy and the structural bearing shell, preventing delamination and premature failure under heavy dynamic loads typical of marine reduction gears.