Rotational Molding worked example
Batch Output at 65% cycle efficiency: a worked example
Here is what the math looks like when conditions slip. We hold every other input steady and drop cycle efficiency to 65%, then walk the calculation through step by step. Batch Output measures how many molded parts a rotational molding line actually delivers per hour once real-world efficiency is factored in.
The inputs for this scenario
- Good parts completed this run: 1,200 units (held at the documented default)
- Oven arm run time: 8 hr (held at the documented default)
- Cycle efficiency (uptime × yield): 65 % (the input this scenario stresses; the baseline uses 90)
Working through the calculation
- The calculation starts from the formula this tool documents: Raw batch output = completed output ÷ 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 cycle 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.
- The practical read: the gap between this scenario and the baseline is entirely attributable to cycle efficiency, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. A single efficiency percentage lumps uptime and yield together, so it will not tell you whether losses came from oven downtime or scrapped parts.
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 Batch Output calculator, set cycle efficiency to your actual value, and adjust the remaining inputs to match your operation.
Last reviewed 2026-05-12.