Conveyors worked example

Lead Time Through Line with processing time through stations of 9 min: a worked example

This worked example runs the lead time through line numbers for a tougher week than the baseline: processing time through stations of 9 min instead of the typical 18 min. Add processing, transfer, queue, and inspection time to estimate total lead time through a production line.

The inputs for this scenario

  • Processing time through stations: 9 min (the input this scenario stresses; the baseline uses 18)
  • Conveyor transfer time: 6 min (held at the documented default)
  • Queue and buffer waiting time: 22 min (held at the documented default)
  • Inspection, hold, or paperwork time: 4 min (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Line lead time = processing time + conveyor transfer time + queue/buffer time + inspection/hold time.
  • Total lead time through line works out to 41 min at these inputs, and this is the headline figure for the scenario.
  • Processing time works out to 9 min at these inputs.
  • Conveyor transfer time works out to 6 min at these inputs.
  • Element 3 + 4 works out to 26 min at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where processing time through stations sits at 18 min and the headline result is 50 min, this scenario comes in 18% below the baseline at 41 min.
  • Use it when quoting throughput commitments, mapping a value stream, or hunting for the biggest source of flow delay on a conveyor line. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Total lead time through line: 41 min (headline result)
  • Processing time: 9 min
  • Conveyor transfer time: 6 min
  • Element 3 + 4: 26 min

Run it with your numbers

  • To rerun this with your own numbers, open the live Lead Time Through Line calculator, set processing time through stations to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.