Bearings, Gears & Power Transmission worked example

Gear Tooth Inspection Workload at 18% setup and recheck allowance: a worked example

Suppose setup and recheck allowance falls to 18%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate inspection hours for gear teeth from inspected features, inspection rate, and allowance for setup, charting, or rechecks.

The inputs for this scenario

  • Tooth features or gears to inspect: 360 features or gears (held at the documented default)
  • Tooth inspection rate: 45 features / hr (held at the documented default)
  • Setup and recheck allowance: 18 % (the input this scenario stresses; the baseline uses 25)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base tooth inspection time = tooth features or gears to inspect รท tooth inspection rate.
  • Required tooth inspection workload works out to 9.44 hr at these inputs, and this is the headline figure for the scenario.
  • Base tooth inspection time works out to 8 hr at these inputs.
  • Setup and recheck allowance works out to 18 % at these inputs.
  • Tooth inspection rate works out to 45 features / hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where setup and recheck allowance sits at 25% and the headline result is 10 hr, this scenario comes in 5.6% below the baseline at 9.44 hr.
  • It computes the total hours to inspect a batch of gear teeth or features by converting feature count to base time and adding a setup-and-recheck allowance. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Required tooth inspection workload: 9.44 hr (headline result)
  • Base tooth inspection time: 8 hr
  • Setup and recheck allowance: 18 %
  • Tooth inspection rate: 45 features / hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Gear Tooth Inspection Workload calculator, set setup and recheck allowance to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.