Single Minute Exchange of Die (S.M.E.D.)

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Single Minute Exchange of Die (S.M.E.D.) - short version

(1) Single Minute Exchange of Die (also known as S.M.E.D.), is the Lean tool used to create very fast changeovers and setups that greatly reduce machine downtime and increase throughput. It is common to reduce machine changeover times from hours to less then ten minutes. While that may sound too good to be true, we've seen it happen time and time again.

(2) SMED is the Lean tool used to very quickly change machines or processes over from producing a specific part number or product to producing a different part number or product or changing an attribute(s) of the current part number or product. SMED processes are highly choreographed and rehearsed to minimize machine downtime.

(3) A series of techniques pioneered by Shigeo Shingo for changeovers of production machinery in less than 10 minutes. The long-term objective is always zero setup, in which changeovers are instantaneous and do not interfere in any way with continuous flow. Setup in a single minute is not required, but used as a

Single Minute Exchange of Die (S.M.E.D.) - long version

Single-Minute Exchange of Die (SMED) is one of the many lean production methods for reducing waste in a manufacturing process. It provides a rapid and efficient way of converting a manufacturing process from running the current product to running the next product. This rapid changeover is key to reducing production lot sizes and thereby improving flow (Mura).

The phrase "single minute" does not mean that all changeovers and startups should take only one minute, but that they should take less than 10 minutes (in other words, "single-digit minute"). Closely associated is a yet more difficult concept, One-Touch Exchange of Die, (OTED), which says changeovers can and should take less than 100 seconds.


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