Sheet Metal Stamping & Press Lines worked example

Downtime Loss at 68% target availability: a worked example

Suppose target availability falls to 68%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Downtime loss measures how much of a press line's scheduled time evaporates into coil changes, die faults, jam clears, and unplanned stops, expressed against your availability target.

The inputs for this scenario

Press downtime this period: 8 hr-equivalent units (held at the documented default)
Total scheduled press time: 250 hr-equivalent units (held at the documented default)
Target availability: 68 % (the input this scenario stresses; the baseline uses 95)

Working through the calculation

The calculation starts from the formula this tool documents: Downtime Loss rate = affected amount ÷ total amount.
Rate works out to 3.2 hr at these inputs, and this is the headline figure for the scenario.
Gap to target works out to 64.8 points at these inputs.
Affected count works out to 8 count at these inputs.
Total count works out to 250 count at these inputs.

How this compares with the baseline

Against the tool's baseline example, where target availability sits at 95% and the headline result is 3.2 hr, this scenario lands almost exactly on the baseline at 3.2 hr.
It expresses downtime as a share of total scheduled press time and reports how many percentage points that leaves you short of your availability target. 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

Rate: 3.2 hr (headline result)
Gap to target: 64.8 points
Affected count: 8 count
Total count: 250 count

Run it with your numbers

To rerun this with your own numbers, open the live Downtime Loss calculator, set target availability to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.