Key Points
Cylindricity is the condition of a surface of revolution within which all points of the surface are equidistant from a common axis.
Cylindricity is a 3D tolerance. It controls both the circular and longitudinal elements of the feature. It includes circularity, straightness, and taper of the surface. The cylindrical surface of the feature must lie between two concentric cylinders, one having a radius of 0.005 larger than the other.
In addition, the feature must be within the limits of size, including perfect from at MMC.
Example Drawing
Application
The size of the bearings can vary within a greater tolerance relative to the cylindricity.
How to Read It
