Powder Metallurgy & Sintered Parts worked example

Lubricant Addition at 65% lubricant blend efficiency: a worked example

This worked example runs the lubricant addition numbers for a tougher week than the baseline: 65% lubricant blend efficiency instead of the typical 90%. This Lubricant Addition calculator translates a shift's pressing output into an hourly throughput rate, then discounts it by a blend-efficiency factor that reflects how well the admixed lubricant is performing during compaction and ejection.

The inputs for this scenario

  • Parts pressed in the shift: 1,200 units (held at the documented default)
  • Press runtime: 8 hr (held at the documented default)
  • Lubricant blend 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 lubricant addition = 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 lubricant blend efficiency sits at 90% and the headline result is 135 units, this scenario comes in 27.78% below the baseline at 97.5 units.
  • Use it when trialing a new lubricant blend or admix percentage, or benchmarking press throughput across shifts. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

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 Lubricant Addition calculator, set lubricant blend efficiency to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.