{{Parts infobox
|image = Axle.scad.png
|designers = [[User:Tim|Timothy Schmidt]]
|date = 2019
|vitamins =
|materials =
|transformations =
|lifecycles =
|tools = [[Metal lathes]]
|parts =
|techniques =
|files =
|suppliers =
|git =
}}
[[Category:Parts]]
[[Category:Motion parts]]
=Introduction=
Keyed shafts rotate inside [[axial bearings]] to transmit power. [[Keys]] are fit into keyways to fix [[wheel hubs]], [[gears]], [[sprockets]], and other accessories to keyed shafts.
=Challenges=
Power transmission often requires rotating shafts with sprockets, brakes, pulleys, gears, wheels, and many other types of devices attached in unique configurations.
=Approaches=
A round steel shaft with a [https://en.wikipedia.org/wiki/Key_(engineering) keyway] allows for similarly keyed interchangeable components to be positioned securely along it's entire length. Such a shaft can be manfactured from round stock with as little as a [https://en.wikipedia.org/wiki/Broaching_(metalworking) broach] and a hammer.
* [https://www.surpluscenter.com/Power-Transmission/Shafting/Keyed-Shafting/1-x-36-Keyed-Shafting-1-2982-100-3.axd 1"x36" keyed shaft]
* [https://www.surpluscenter.com/Power-Transmission/Shafting/Keyed-Shafting/1-x-72-Keyed-Shafting-1-2982-100-6.axd 1"x72" keyed shaft]
Rear wheel assembly.jpg|
=Development targets=
==indexed shafts==
* [https://www.couplemate.com.au/trailer-caravan-axles/40-square-axles/40mm-square-axle/ 40mm square axle]
==splined shafts==
ISO 500-3 for PTO splines
ISO 5673-1 is a good start for other splines.
ANSI B92.1
DIN 5480 & ISO 4156
JIS B1603
=References=
* [https://en.wikipedia.org/wiki/Axle Wikipedia: Axle]
* [https://en.wikipedia.org/wiki/Simple_machine Wikipedia: Simple machine]
* [https://en.wikipedia.org/wiki/Key_(engineering) Key (engineering)]
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