====== keys ======

^ Parts infobox ^^
| Image | {{:archive:keys.scad.png?240}} |
| designers | [[:user:tim|Timothy Schmidt]] |
| date | 2021 |
| vitamins |  |
| materials |  |
| transformations |  |
| lifecycles |  |
| tools | [[:saws|Saws]], [[:cnc_mills|CNC Mills]] |
| parts |  |
| techniques |  |
| files |  |
| suppliers |  |
| git |  |

[[:category:parts|Category:Parts]]

[[:category:motion_parts|Category:Motion parts]]

==== Introduction ====

In mechanical engineering, a key is a machine element used to connect a rotating machine element to a [[:keyed_shafts|shaft]]. The key prevents relative rotation between the two parts and may enable torque transmission. For a key to function, the shaft and rotating machine element must have a keyway and a keyseat, which is a slot and pocket in which the key fits. The whole system is called a keyed joint. A keyed joint may allow relative axial movement between the parts.

Commonly keyed components include gears, pulleys, [[:shaft_couplers|shaft couplers]], and [[:washers|washers]].

==== Challenges ====

==== Approaches ====

==== References ====

  * [[https://en.wikipedia.org/wiki/Key_(engineering)|Key (engineering)]]
  * [[https://www.surpluscenter.com/Power-Transmission/Shafting/Key-Stock/1-4-Square-Key-1-5-Long-G-G-Mfg-411-0424-1-5030-25-A.axd|1/4" square key]]

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[[https://github.com/timschmidt/replimat/blob/e0bc0b855bb946bab00c75ca0d8b002ae0dc0172/wiki/keys.html|Original archived page]] — revision 8045, 2021-09-23T09:03:04+00:00, by Tim.