SMED Changeover ROI
Annualize a changeover-time project's minutes saved into recovered capacity and dollar value, so a small per-event number isn't mistaken for a small annual one.
Annualizing
Payback test
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How this works
Minutes saved per changeover, multiplied by changeovers per day and operating days per year, gives total hours of capacity recovered annually. That capacity is valued at the line's hourly rate, then gated on payback against project cost.
Key terms
- SMED: Single-Minute Exchange of Die, a method for reducing changeover time.
- Capacity gain: hours of production capacity recovered per year from the faster changeover.
Assumptions
- Changeover time reduction is fully usable as added throughput capacity, not idle time
Limitations
- Single line, does not model operator learning curve during SMED rollout
Sources
Single-Minute Exchange of Die (Shigeo Shingo), standard changeover-reduction ROI framing.
Worked example
35 minutes saved per changeover reads as trivial on its own, easy to dismiss as too small to fund. Annualized across 8 changeovers/day and 250 operating days it is 1,166.7 hours and $175,000/year, comfortably paying back a $120,000 project in 8 months.
Common use cases
- Justifying a SMED changeover-reduction program with real annualized value
- Comparing changeover-reduction against other capacity-recovery projects
- Avoiding a per-event view that dismisses a genuinely valuable project