Given in Table 4 the value of 0,2 mm, therefore, Of 0,4 mm which is greater than the value of 0,2 mm These deviations lead to the numerical value The permissibleĭeviations for the diameter of 25 mm are ± 0,2 mm. The general tolerances in accordance with the Tolerance on circularity is equal to the numerical Indicated directly on the drawing the general
The permissible deviation of the diameter is So the diameter of each ring can be anywhere between 11.9 mm and 12.2 mm but its circularity has to be within a 0.2 mm boundary. In your case - linear diameter tolerance is larger (+0.2/-0.1 = 0.3) than the allowable circularity deviation (0.2) - the circularity deviation of every ring along that cylinder is not allowed to exceed 0.2, regardless of the diameter size. ISO 2768-K would limit the total permissible circularity deviation to 0.2 mm even if the permissible linear diameter deviation is greater. However, if as you indicate, the 12 mm diameter has an individual tolerance assigned (+0.2/-0.1) then the first part of ISO 2768 (the "m") does not cover this dimension.īut without additional geometric tolerances the "K" would still define the maximum allowable circularity and straightness deviations.
Geometrical tolerances may be used even if theįeatures are everywhere at their maximum material (see ISO 8015), general geometrical tolerancesĪpply independently of the actual local size of the According to the principle of independency
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