Preferred Limits and Fits for Cylindrical Parts
|Publication Date:||1 January 1967|
Scope and Application.
This standard presents definitions of terms applying to fits between plain (non-threaded) cylindrical parts and makes recommendations on preferred sizes, allowances, tolerances, and fits use wherever they are applicable. The standard through 20 in. diameter is in accord with the recommendations of American-British-Can
Many factors, such as length of engagement, bearing load, speed, lubrication, temperature, humidity, surface texture, and materials, must be taken into consideration in the selection of fits for a particular application, and modifications in these recommendations might be required to satisfy extreme conditions. Subsequent adjustments might also be desired as the result of experience in a particular application to suit critical functional requirements or to permit optimum manufacturing economy. Selection of departure from these recommendations will depend upon consideration of the engineering and economic factors that might be involved.