# Changeover

Operations · `Changeover` · verification: source checked

Changeover is the process of switching production from one product or part number to another on a machine or on a series of linked machines by changing parts, dies, molds, fixtures and similar items. It is also called a setup. Changeover time is measured as the time elapsed between the last piece of the run just completed and the first good piece produced after the changeover.

## Specification

| Property | Value |
|---|---|
| Kind | methodology |

## Study notes

- Changeover applies both to single machines (e.g. stamping press, molding machine) and to linked machines (e.g. assembly line or cell).
- Changeover is also referred to as a setup.
- Changeover time starts at the last piece of the completed run and ends at the first good piece after the changeover.
- The document cross-references Single Minute Exchange of Die (SMED); no further detail on SMED is given.

## Sources

1. [Changeover - Lean Enterprise Institute](https://www.lean.org/lexicon-terms/changeover/) (accessed 2026-10-25)

---

Source page: https://machineschema.com/operational/changeover  
JSON: https://machineschema.com/operational/changeover.json  
License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Cite Machine Schema and the original sources.