Construction Machinery & Attachments worked example

Attachment Cycle Output at 90% jobsite cycle efficiency: a worked example

What does the result look like when jobsite cycle efficiency reaches 90%? The full calculation is worked below with real intermediate numbers. checking attachment productivity on a job, demo, rental, or customer quote

The inputs for this scenario

  • Completed attachment cycles or passes: 430 cycles (unchanged)
  • Attachment runtime: 6.5 hr (unchanged)
  • Jobsite cycle efficiency: 90 % (raised for this scenario; the documented default is 78)

Working through the calculation

  • Applying the documented formula (Raw attachment cycles per hour = completed attachment cycles or passes ÷ attachment runtime) to the inputs above produces each figure below.
  • At this operating point the engine returns 59.54 cycles / hr for effective attachment cycle output, the number this scenario is built around.
  • At this operating point the engine returns 66.15 cycles / hr for raw attachment cycles per hour.
  • At this operating point the engine returns 90 % for jobsite cycle efficiency.
  • At this operating point the engine returns 6.5 hr for attachment runtime.

How this compares with the baseline

  • Against the tool's baseline example, where jobsite cycle efficiency sits at 78% and the headline result is 51.6 cycles / hr, this scenario comes in 15.38% above the baseline at 59.54 cycles / hr.
  • A figure at this level is achievable when jobsite cycle efficiency is genuinely sustained, not just peaked for a shift. A single efficiency percent rolls up many distinct losses — repositioning, waiting on trucks, obstructions — so it smooths over the specific bottleneck you may actually need to fix.

Results at a glance

  • effective attachment cycle output: 59.54 cycles / hr (headline result)
  • raw attachment cycles per hour: 66.15 cycles / hr
  • jobsite cycle efficiency: 90 %
  • attachment runtime: 6.5 hr

Run it with your numbers

  • Every input above is editable in the live Attachment Cycle Output calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.