Bearings, Gears & Power Transmission worked example

Power Transmission Warranty Return Rate at 0.29% target maximum return rate: a worked example

What does the result look like when target maximum return rate reaches 0.29%? The full calculation is worked below with real intermediate numbers. a manufacturer or distributor needs to monitor warranty returns for bearings, gearboxes, couplings, belts, chains, or reducers

The inputs for this scenario

  • Confirmed warranty returns: 38 returns (unchanged)
  • Shipped or installed population: 12,500 units (unchanged)
  • Target maximum return rate: 0.29 % (raised for this scenario; the documented default is 0.25)

Working through the calculation

  • Applying the documented formula (Warranty return rate = confirmed warranty returns รท shipped or installed population) to the inputs above produces each figure below.
  • At this operating point the engine returns 0.3 % warranty returns for warranty return rate, the number this scenario is built around.
  • At this operating point the engine returns -0.01 points for return-rate gap to target.
  • At this operating point the engine returns 38 returns for confirmed warranty returns.
  • At this operating point the engine returns 12,500 units for shipped or installed population.

How this compares with the baseline

  • Against the tool's baseline example, where target maximum return rate sits at 0.25% and the headline result is 0.3 % warranty returns, this scenario lands almost exactly on the baseline at 0.3 % warranty returns.
  • A figure at this level is achievable when target maximum return rate is genuinely sustained, not just peaked for a shift. Returns lag shipments, so a low rate on a recently shipped population can hide failures that surface only after months of duty cycle and lubrication breakdown.

Results at a glance

  • Warranty return rate: 0.3 % warranty returns (headline result)
  • Return-rate gap to target: -0.01 points
  • Confirmed warranty returns: 38 returns
  • Shipped or installed population: 12,500 units

Run it with your numbers

  • Every input above is editable in the live Power Transmission Warranty Return Rate calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.