Should I count teeth or gears?

Use the same unit basis as the inspection rate. If the rate is per inspected gear, enter gears; if it is per feature, enter features.

Can this include CMM programming?

Include programming in the allowance only if it is minor; major programming should be estimated separately.

What if profile and lead use different rates?

Run separate scenarios for inspection types with different setup times or measurement rates.

How can I use the result?

Use it to prevent inspection bottlenecks, quote quality labor, and plan lot release timing.

Bearings, Gears & Power Transmission calculator

Gear Tooth Inspection Workload Calculator

Gear tooth inspection can include profile, lead, pitch, runout, span, backlash, nicks, burrs, and contact pattern checks. This calculator helps quality engineers and supervisors plan inspection labor for gears, pinions, sprockets, and reducer components.

What this calculator does

Estimate inspection hours for gear teeth from inspected features, inspection rate, and allowance for setup, charting, or rechecks.
a gear manufacturer needs to schedule CMM, gear checker, or manual tooth inspection workload for a production lot
Returns estimated inspection hours for gear tooth quality checks.

Formula used

Base tooth inspection time = tooth features or gears to inspect ÷ tooth inspection rate
Required tooth inspection workload = base inspection time × setup and recheck allowance factor

Inputs explained

Tooth features or gears to inspect: Use inspected teeth, features, gears, pinions, or measurement points based on how the inspection rate is measured.
Tooth inspection rate: Use the proven rate for the same gauge, CMM, gear checker, charting, and acceptance requirements.
Setup and recheck allowance: Add time for master setup, fixture changes, chart review, burr rechecks, measurement repeats, and documentation.

How to use the result

Use it for inspection staffing, first-article planning, PPAP work, containment sorting, and lot release scheduling.
It does not define the inspection plan or tolerances; those must come from the drawing, control plan, or customer requirement.

Common questions

Should I count teeth or gears? Use the same unit basis as the inspection rate. If the rate is per inspected gear, enter gears; if it is per feature, enter features.
Can this include CMM programming? Include programming in the allowance only if it is minor; major programming should be estimated separately.
What if profile and lead use different rates? Run separate scenarios for inspection types with different setup times or measurement rates.
How can I use the result? Use it to prevent inspection bottlenecks, quote quality labor, and plan lot release timing.

Last reviewed 2026-05-12.