Fastener Manufacturing & Thread Rolling worked example

Heading Press Output at 99% header efficiency after minor stops: a worked example

This scenario runs the heading press output calculation on the strong side: 99% header efficiency after minor stops, with every other input held at its documented default. Use it before quoting or loading a bolt, screw, rivet, or pin job onto a header so the schedule reflects good blanks per hour instead of nameplate strokes.

The inputs for this scenario

  • Good headed blanks completed: 24,000 pieces (unchanged)
  • Actual header run time: 8 hr (unchanged)
  • Header efficiency after minor stops: 99 % (raised for this scenario; the documented default is 88)

Working through the calculation

  • Applying the documented formula (Raw header rate = good headed blanks รท actual run time) to the inputs above produces each figure below.
  • At this operating point the engine returns 2,970 units / hr for effective header output, the number this scenario is built around.
  • At this operating point the engine returns 3,000 units / hr for raw header rate.
  • At this operating point the engine returns 99 % for header efficiency.
  • At this operating point the engine returns 8 hr for run time used.

How this compares with the baseline

  • Against the tool's baseline example, where header efficiency after minor stops sits at 88% and the headline result is 2,640 units / hr, this scenario comes in 12.5% above the baseline at 2,970 units / hr.
  • Use it when quoting capacity for a cold heading job, scheduling a header against a release, or comparing a machine's nameplate SPM to what it really delivers on a part. 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

  • Effective header output: 2,970 units / hr (headline result)
  • Raw header rate: 3,000 units / hr
  • Header efficiency: 99 %
  • Run time used: 8 hr

Run it with your numbers

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

Last reviewed 2026-05-12.