Cylindricity

The combination of parallelism, circularity and straightness defines cylindricity when applied to the surface of a cylinder, and is controlled by a tolerance of cylindricity. The tolerance zone is the annular space between two coaxial cylinders, the radial difference being the tolerance value to be specified.

It should be mentioned that, due to difficulties in checking the combined effects of parallelism, circularity and straightness, it is recommended that each of these characteristics is toleranced and inspected separately.

Cylindricity

Product requirement The profile is required to be contained within the unilateral tolerance zone.

Product requirement The whole curved surface of the feature must lie between an annular tolerance zone 0.04 wide formed by two cylindrical surfaces coaxial with each other.

Drawing instruction

0.04

i

Product requirement The profile is required to be contained within the unilateral tolerance zone.

Drawing instruction

Theoretical profile

0.5 normal to theoretical profile

Theoretical profile

0.5 normal to theoretical profile

Profile Line Tolerance

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Responses

  • paul
    Why unilateral tolerances in engineering drawing?
    8 years ago
  • Natasha
    What is the cylindricity with drawing?
    8 years ago
  • jan
    How to Check Cylindricity?
    7 years ago

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