Trailers, Truck Bodies & Specialty Vehicles worked example

Line Balance at 65% line balance efficiency: a worked example in trailers, truck bodies & specialty vehicles

Suppose line balance efficiency falls to 65%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Line balance measures how evenly work is distributed across an assembly line and, in practice, what real throughput that line delivers once losses are counted.

The inputs for this scenario

  • Trailers completed off the line: 1,200 units (held at the documented default)
  • Scheduled line runtime: 8 hr (held at the documented default)
  • Line balance efficiency: 65 % (the input this scenario stresses; the baseline uses 90)

Working through the calculation

  • The calculation starts from the formula this tool documents: Raw line balance = completed output รท runtime.
  • Effective throughput works out to 97.5 units at these inputs, and this is the headline figure for the scenario.
  • Raw throughput works out to 150 units 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 line balance efficiency sits at 90% and the headline result is 135 units, this scenario comes in 27.78% below the baseline at 97.5 units.
  • It divides completed output by runtime to get raw hourly throughput, then multiplies by line efficiency to get the effective throughput you can plan around. 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

  • Effective throughput: 97.5 units (headline result)
  • Raw throughput: 150 units
  • Efficiency: 65 %
  • Runtime: 8 hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Line Balance calculator, set line balance efficiency to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.