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A Zero Film Bearing is a Bearing

By BYJU'S Exam Prep

Updated on: September 25th, 2023

A zero film bearing is a bearing
A. Where the surfaces of the journal and the bearing are separated by a thick film of lubricant
B. Where the surfaces of the journal and the bearing are partially separated by a film of lubricant and there is partial metal-to-metal contact
C. Where the surfaces of the journal and the bearing are separated by a film created by elastic deflection of parts 
D. Where there is no lubricant

Answer: D – Where there is no lubricant

A zero film bearing is a bearing where there is no lubricant.

Solution: 

  • A bearing in which the working surfaces are totally isolated from one another by the lubricant is called a thick film bearing. They are also referred to as bearings with hydrodynamic lubrication.
  •  A bearing in which the working surfaces are partially separated by a film of lubricant from one another is called a thin film bearing, and there is partial metal-to-metal contact.
  •  A zero film bearing is a bearing where there is no lubricant.

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