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 __________.
• Difference between pivot shoe (Kingsbury) thrust bearings and parallel surface bearings • Role of oil film / hydrodynamic lubrication in carrying heavy thrust loads • How tilting or pivoting shoes affect pressure distribution on the bearing surface
• Which option describes something that actually changes how the load is carried across the bearing surface, rather than just adjusting parts or clearances? • In a thrust bearing designed for very high loads, how could you arrange surfaces and lubrication so that a pressurized wedge of oil supports the load instead of metal-to-metal contact? • Think about why the term pivot shoe is used: what motion does that imply and how would that help form an oil film?
• Identify the choice that clearly involves hydrodynamic oil wedge formation, not just mechanical adjustment or wear compensation. • Eliminate any options that only describe static fitting or clearances without changing how the lubricant behaves under load. • Make sure the correct choice directly connects the shoes’ motion or geometry to greater load per square inch through improved lubrication, not through tighter metal contact.
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