{{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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