Rotational Molding worked example
Delivery Capacity at 99% machine uptime: a worked example in rotational molding
Push machine uptime up to 99% and the picture changes. This example computes every intermediate figure at that operating point. Use it when delivery capacity in rotational molding is being asked to take on more work and you need to know if there is room.
The inputs for this scenario
- Good parts per oven cycle: 4 units / cycle (unchanged)
- Available oven cycles in the period: 480 cycles (unchanged)
- Machine uptime: 99 % (raised for this scenario; the documented default is 90)
- First-pass yield: 97 % (unchanged)
Working through the calculation
- Applying the documented formula (Gross delivery capacity capacity = units per cycle × available cycles) to the inputs above produces each figure below.
- At this operating point the engine returns 1,844 units for good output capacity, the number this scenario is built around.
- At this operating point the engine returns 1,920 units for gross capacity.
- At this operating point the engine returns 19.2 units for uptime loss.
- At this operating point the engine returns 57.02 units for yield loss.
How this compares with the baseline
- Against the tool's baseline example, where machine uptime sits at 90% and the headline result is 1,676 units, this scenario comes in 10% above the baseline at 1,844 units.
- It computes deliverable good-part capacity as parts per cycle times available cycles, scaled by uptime and first-pass yield. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.
Results at a glance
- Good output capacity: 1,844 units (headline result)
- Gross capacity: 1,920 units
- Uptime loss: 19.2 units
- Yield loss: 57.02 units
Run it with your numbers
- Every input above is editable in the live Delivery Capacity calculator, which recalculates instantly and can be shared with the inputs intact.
Last reviewed 2026-05-12.