Three components stack inside a housing, leaving an axial gap for a clip. Compute the worst-case gap range AND the statistical (RSS) minimum, and see how they differ.
📋 Scenario
On a pump shaft, a bearing, a shim and a spacer stack inside a stepped bore. The leftover gap takes a snap ring rated to work between 2.6 mm and 3.4 mm. Give the worst-case range for a 100% guarantee — then the RSS minimum, which is what you would plan production around when parts are made to a normal distribution.
📐 Given dimensions
60.00 ±0.10 mm
20.00 ±0.05 mm
15.00 ±0.03 mm
22.00 ±0.04 mm
2.6 – 3.4 mm
ℹ️ NoteWorst-case sums tolerances directly (guaranteed limit). RSS combines them as a root-sum-of-squares (statistical, for normal production).