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Machine Drawing by N. D. Junnarkar

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Chapter 7

Surface Roughness, Limits, Fits, and Tolerances

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This chapter contains information about the selection of fits between two components of an assembly, and surface roughness, which can be achieved through different machining processes

After reading the chapter you will be able to

  • Understand the importance of limits, fits, and tolerances for assembly work
  • select the proper fit for assembling two machined components
7.1 SURFACE ROUGHNESS

Surface roughness limits the performance and the properties of a component in the following manner:

 

  • Roughness increases friction and the wear between unlubricated surfaces that are in contact with ...

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