Industrial Equipment, Machinery & Capital Goods worked example

Mechanical Assembly Time at 25% alignment and handling allowance: a worked example

This scenario runs the mechanical assembly time calculation on the strong side: 25% alignment and handling allowance, with every other input held at its documented default. Use it when planning frames, guarding, conveyors, skids, drive assemblies, pneumatics, and machine modules.

The inputs for this scenario

  • Mechanical assembly operations: 120 operations (unchanged)
  • Mechanical operation throughput: 5.5 operations / hr (unchanged)
  • Alignment and handling allowance: 25 % (raised for this scenario; the documented default is 22)

Working through the calculation

  • Applying the documented formula (Base mechanical assembly time = mechanical assembly operations รท mechanical operation throughput) to the inputs above produces each figure below.
  • At this operating point the engine returns 27.27 hr for required mechanical assembly time, the number this scenario is built around.
  • At this operating point the engine returns 21.82 hr for base mechanical assembly time.
  • At this operating point the engine returns 25 % for alignment and handling allowance.
  • At this operating point the engine returns 5.5 pieces / min for mechanical operation throughput.

How this compares with the baseline

  • Against the tool's baseline example, where alignment and handling allowance sits at 22% and the headline result is 26.62 hr, this scenario comes in 2.46% above the baseline at 27.27 hr.
  • Use it when planning the mechanical portion of a build, sizing a fitter crew, or quoting assembly labor for a machine or sub-assembly. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Required mechanical assembly time: 27.27 hr (headline result)
  • Base mechanical assembly time: 21.82 hr
  • Alignment and handling allowance: 25 %
  • Mechanical operation throughput: 5.5 pieces / min

Run it with your numbers

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

Last reviewed 2026-05-12.