Editing Coupling (section)

=== Tapered shaft lock ===
A '''tapered lock''' is a form of [[Key (engineering)|key]]less shaft locking device<ref>{{cite web|url=http://www.lovejoy-inc.com/products/shaft-locking-devices.aspx|title=Lovejoy, Inc. : Products : Couplings & Power Transmission: Shaft Locking Devices|website=Lovejoy-inc.com|access-date=7 January 2015|archive-url=https://web.archive.org/web/20150216192925/http://www.lovejoy-inc.com/products/shaft-locking-devices.aspx|archive-date=16 February 2015|url-status=dead}}</ref> that does not require any material to be removed from the shaft. The basic idea is similar to a clamp coupling but the moment of rotation is closer to the center of the shaft.<ref>{{cite web|url=http://www.ustsubaki.com/pdf/l0930000_power_lock_catalog.pdf |archive-url=https://ghostarchive.org/archive/20221009/http://www.ustsubaki.com/pdf/l0930000_power_lock_catalog.pdf |archive-date=2022-10-09 |url-status=live|title=U.S. Tsubaki POWER-LOCK Catalog|website=Ustsubaki.com|access-date=7 January 2015}}</ref> An alternative [[#Others|coupling device]] to the traditional [[Key (engineering)#Parallel keys|parallel key]], the tapered lock removes the possibility of [[Backlash (engineering)|play]] due to worn keyways.<ref>{{cite web|url=http://tsubakimoto.com/mining-industry/power-lock|title=Power Lock|website=Tsubakimoto.com|access-date=7 January 2015|archive-url=https://web.archive.org/web/20150610202506/http://tsubakimoto.com/mining-industry/power-lock/|archive-date=10 June 2015|url-status=dead}}</ref><ref>{{cite web|url=http://www.fennerdrives.com/catalogs/keyless_bushings.pdf|title=Keyless Locking Devices|publisher=Fenner Drives|date=4 September 2012|archive-url=https://web.archive.org/web/20120904160139/http://www.fennerdrives.com/catalogs/keyless_bushings.pdf|access-date=28 November 2018|archive-date=2012-09-04}}</ref><ref>{{cite web|url=http://tsubakimoto.com/power-transmission/shaft-coupling/disc/echt-flex/nef-taper-lock|title=NEF Taper-Lock Series|website=Tsubakimoto.com|access-date=7 January 2015|archive-date=22 October 2021|archive-url=https://web.archive.org/web/20211022213631/https://tsubakimoto.com/power-transmission/shaft-coupling/disc/echt-flex/nef-taper-lock/|url-status=dead}}</ref> It is more robust than using a key because maintenance only requires one tool and the self-centering balanced rotation means it lasts longer than a keyed joint would, but the downside is that it costs more.<ref>{{cite web |publisher=United Drill Bushing Corporation |title=Taper Lock Tooling - For Drilling, Reaming, Countersinking, Tolerancing. |date=2 November 1998 |url=https://www.ucc-udb.com/Q04-Q09-udb.PDF |access-date=10 November 2023}}</ref>