Vending, Kiosk & Self-Service Equipment worked example

Service Parts Buffer with daily service parts consumption of 600 units / day: a worked example in vending, kiosk & self-service equipment

Suppose daily service parts consumption falls to 600 units / day. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate service parts buffer for vending, kiosk and self-service equipment using production-ready inputs so teams can plan replenishment and safety stock using actual usage and lead time.

The inputs for this scenario

  • Daily Service Parts Consumption: 600 units / day (the input this scenario stresses; the baseline uses 1,200)
  • Parts Replenishment Lead Time: 85 days (held at the documented default)
  • Service Parts Safety Stock: 1.1 units (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Service parts buffer cycle stock = service parts buffer daily usage × service parts buffer lead time.
  • Protected days of supply works out to 6.42 days at these inputs, and this is the headline figure for the scenario.
  • Unprotected days works out to 7.06 days at these inputs.
  • Inventory works out to 600 pieces at these inputs.
  • Daily usage works out to 85 pieces / day at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where daily service parts consumption sits at 1,200 units / day and the headline result is 12.83 days, this scenario comes in 50% below the baseline at 6.42 days.
  • It computes the cycle stock needed to cover replenishment lead time plus safety stock, and translates on-hand inventory into protected days of supply. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Protected days of supply: 6.42 days (headline result)
  • Unprotected days: 7.06 days
  • Inventory: 600 pieces
  • Daily usage: 85 pieces / day

Run it with your numbers

  • To rerun this with your own numbers, open the live Service Parts Buffer calculator, set daily service parts consumption to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.