Sheet Metal Stamping & Press Lines worked example

Progressive Die Output at 65% feed efficiency: a worked example

Suppose feed efficiency falls to 65%. This page works the full calculation at that level so you can see exactly which result moves and by how much. A progressive die stamps a strip through multiple stations in one press stroke, so its output is measured in finished parts per hour rather than strokes alone.

The inputs for this scenario

  • Good parts off the progressive die: 1,200 units (held at the documented default)
  • Die run time: 8 hr (held at the documented default)
  • Feed efficiency (uptime): 65 % (the input this scenario stresses; the baseline uses 90)

Working through the calculation

  • The calculation starts from the formula this tool documents: Raw progressive die output = completed output รท runtime.
  • Effective throughput works out to 97.5 units / hr at these inputs, and this is the headline figure for the scenario.
  • Raw throughput works out to 150 units / hr at these inputs.
  • Efficiency works out to 65 % at these inputs.
  • Runtime works out to 8 hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where feed efficiency sits at 90% and the headline result is 135 units / hr, this scenario comes in 27.78% below the baseline at 97.5 units / hr.
  • Computes effective progressive-die output by dividing good parts by run time and applying a feed efficiency factor. 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

  • Effective throughput: 97.5 units / hr (headline result)
  • Raw throughput: 150 units / hr
  • Efficiency: 65 %
  • Runtime: 8 hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Progressive Die Output calculator, set feed efficiency to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.