Eccentric

Rarity: Common

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At a glance

Class

Notion

Domain

Science and technology

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What Wikipedia says

In mechanical engineering, an eccentric is a circular disk (eccentric sheave) solidly fixed to a rotating axle with its centre offset from that of the axle (hence the word "eccentric", out of the center).

Excerpt from the Wikipedia article “Eccentric (mechanism)”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Raimond Spekking, CC BY-SA 4.0, via Wikimedia Commons.