Where dimensional requirements are closer than can be obtained by casting, final machining may be necessary. Depending upon configuration, castings may distort during cooling from casting to room temperature. In such cases, a setting operation may be necessary.
|Angular tolerance +/- 0.5 degrees|
|Linear tolerance +/- 0.125mm per 25mm|
|Diameter||Up to 12.50mm||12.50mm-25.00mm||25.0mm-37.50mm|
|0.125mm-0.25mm per 25mm dependant on configuration.|
|These figures are produced from qualitative inspection observations over many years of manufacture, but should only be used as a guide. It is important to discuss your specific requirements if in doubt.|
|These depend on size, shape and section but generally fall into the tolerance bands listed below.|
|Up to 20mm||+/-0.10mm|