Precision Springs, Stampings & Micro-Formed Components worked example

Coil Feed Yield at 68% target coil feed yield rate: a worked example

This worked example runs the coil feed yield numbers for a tougher week than the baseline: 68% target coil feed yield rate instead of the typical 95%. Estimate coil feed yield for precision springs, stampings and micro-formed components using production-ready inputs so teams can track KPI performance and decide whether corrective action is needed.

The inputs for this scenario

  • Good micro-formed parts from the coil feed: 8 count (held at the documented default)
  • Total parts fed from the coil: 250 count (held at the documented default)
  • Target coil feed yield rate: 68 % (the input this scenario stresses; the baseline uses 95)

Working through the calculation

  • The calculation starts from the formula this tool documents: Coil feed yield rate = coil feed yield count ÷ total coil feed yield population × 100.
  • Coil feed yield rate works out to 3.2 % at these inputs, and this is the headline figure for the scenario.
  • Coil feed yield gap to target works out to 64.8 points at these inputs.
  • Coil feed yield count works out to 8 count at these inputs.
  • Total coil feed yield population works out to 250 count at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where target coil feed yield rate sits at 95% and the headline result is 3.2 %, this scenario lands almost exactly on the baseline at 3.2 %.
  • Use it during setup validation, first-article checks and run monitoring on coil-fed stamping and forming lines. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Coil feed yield rate: 3.2 % (headline result)
  • Coil feed yield gap to target: 64.8 points
  • Coil feed yield count: 8 count
  • Total coil feed yield population: 250 count

Run it with your numbers

  • To rerun this with your own numbers, open the live Coil Feed Yield calculator, set target coil feed yield rate to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.