Conveyors worked example

Lead Time Through Line with processing time through stations of 45 min: a worked example

Push processing time through stations up to 45 min and the picture changes. This example computes every intermediate figure at that operating point. a manufacturing engineer needs to estimate how long a unit spends from line entry to finished output

The inputs for this scenario

  • Processing time through stations: 45 min (raised for this scenario; the documented default is 18)
  • Conveyor transfer time: 6 min (unchanged)
  • Queue and buffer waiting time: 22 min (unchanged)
  • Inspection, hold, or paperwork time: 4 min (unchanged)

Working through the calculation

  • Applying the documented formula (Line lead time = processing time + conveyor transfer time + queue/buffer time + inspection/hold time) to the inputs above produces each figure below.
  • At this operating point the engine returns 77 min for total lead time through line, the number this scenario is built around.
  • At this operating point the engine returns 45 min for processing time.
  • At this operating point the engine returns 6 min for conveyor transfer time.
  • At this operating point the engine returns 26 min for element 3 + 4.

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 54% above the baseline at 77 min.
  • It sums processing time, conveyor transfer time, queue and buffer waiting time, and inspection or hold time to give total lead time through the line. 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

  • Total lead time through line: 77 min (headline result)
  • Processing time: 45 min
  • Conveyor transfer time: 6 min
  • Element 3 + 4: 26 min

Run it with your numbers

  • Every input above is editable in the live Lead Time Through Line calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.