What Is Cylindricity and Circularity?

Circularity refers to how close the cross-section of the workpiece to the theoretical circle. ... Cylindricity is a combination of circularity and surface straightness. 3. Circularity only measures the surface in one circle, while cylindricity also concerns how straight the cylinder is.

What is meant by Cylindricity?

Cylindricity is a 3-Dimensional tolerance that controls the overall form of a cylindrical feature to ensure that it is round enough and straight enough along its axis. Cylindricity is independent of any datum feature the tolerance needs to be less than the diameter dimensional tolerance of the part.

What is meant by circularity?

Description: The circularity symbol is used to describe how close an object should be to a true circle. Sometimes called roundness, circularity is a 2-Dimensional tolerance that controls the overall form of a circle ensuring it is not too oblong, square, or out of round.