OEE & Factory Performance worked example

Bottleneck Impact with bottleneck rate of 450 units / hr: a worked example

What does the result look like when bottleneck rate reaches 450 units / hr? The full calculation is worked below with real intermediate numbers. Use it to size the constraint and the throughput at risk in OEE & Factory Performance.

The inputs for this scenario

  • Bottleneck (constrained) rate: 450 units / hr (raised for this scenario; the documented default is 180)
  • Upstream demand rate: 200 units / hr (unchanged)
  • Percent basis: 100 x (unchanged)

Working through the calculation

  • Applying the documented formula (Demand served = bottleneck rate ÷ upstream demand × 100) to the inputs above produces each figure below.
  • At this operating point the engine returns 225 % for demand the bottleneck can meet, the number this scenario is built around.
  • At this operating point the engine returns 2.25 value for raw ratio.
  • At this operating point the engine returns 100 x for conversion factor.
  • At this operating point the engine returns 200 value for denominator.

How this compares with the baseline

  • Against the tool's baseline example, where bottleneck rate sits at 180 units / hr and the headline result is 90 %, this scenario comes in 150% above the baseline at 225 %.
  • A figure at this level is achievable when bottleneck rate is genuinely sustained, not just peaked for a shift. It assumes a single dominant bottleneck and steady rates; with shifting or floating bottlenecks the snapshot can understate the real constraint.

Results at a glance

  • Demand the bottleneck can meet: 225 % (headline result)
  • Raw ratio: 2.25 value
  • Conversion factor: 100 x
  • Denominator: 200 value

Run it with your numbers

  • Every input above is editable in the live Bottleneck Impact calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.