Runout Tolerance (Runout Deviation)
Runout tolerance is a geometric tolerance that specifies the runout fluctuation of a target’s feature when the target (part) is rotated on an axis (specified straight line). A datum is always necessary to indicate runout tolerance; as such, it is a geometric tolerance for features related to datums.
Circular Runout
Circular runout specifies the runout of any part of a circumference when a part is rotated.
To meet the circular runout requirement, the runout of the measured value when the part is rotated must be within the specified range.
- Explanation of drawings
- The runout of the cylindrical surface in the radial direction, indicated by the indication arrow, must not surpass 0.03 mm on any measurement plane perpendicular to the datum axis line when the target is rotated once on the datum axis line.
Total Runout
Total runout specifies the runout of the entire surface of a part when it is rotated.
To meet the total runout requirement, the runout of the measured value of the entire cylinder surface must be within the specified range.
- Explanation of drawings
- The total runout of the cylindrical surface in the radial direction, indicated by the indication arrow, must not surpass 0.03 mm at any point on the cylindrical surface when the cylinder part is rotated on the datum axis line.
