Mass Finishing, Deburring & Polishing worked example

Vibratory Energy Cost at 92% motor load and duty factor: a worked example

Push motor load and duty factor up to 92% and the picture changes. This example computes every intermediate figure at that operating point. Use it when vibratory energy cost in mass finishing, deburring and polishing is being put through a mass finishing, deburring and polishing weighted-cost review.

The inputs for this scenario

  • Vibratory run hours per batch: 100 units (unchanged)
  • Electricity cost per run hour: 45 $ / unit (unchanged)
  • Motor load / duty factor: 92 % (raised for this scenario; the documented default is 80)
  • Fixed media and maintenance cost: 250 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Vibratory Energy Cost cost = quantity × rate × capture factor + fixed cost) to the inputs above produces each figure below.
  • At this operating point the engine returns 4,390 $ for weighted cost, the number this scenario is built around.
  • At this operating point the engine returns 43.9 $ / piece for per piece value.
  • At this operating point the engine returns 4,140 $ for captured value.
  • At this operating point the engine returns 250 $ for fixed adjustment.

How this compares with the baseline

  • Against the tool's baseline example, where motor load and duty factor sits at 80% and the headline result is 3,850 $, this scenario comes in 14.03% above the baseline at 4,390 $.
  • It computes the total energy-plus-media cost of a vibratory run (hours times hourly cost, scaled by duty factor, plus fixed cost) and the cost per run hour. 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

  • Weighted cost: 4,390 $ (headline result)
  • Per piece value: 43.9 $ / piece
  • Captured value: 4,140 $
  • Fixed adjustment: 250 $

Run it with your numbers

  • Every input above is editable in the live Vibratory Energy Cost calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.