Jackshaft

Jackshaft
A two-pulley jackshaft redirecting belt power from horizontal to vertical.

A jackshaft, also called a countershaft, is a common mechanical design component used to transfer or synchronize rotational force in a machine. A jackshaft is often just a short stub with supporting bearings on the ends and two pulleys, gears, or cranks attached to it.

During the industrial revolution, the jackshaft was commonly used with the line shaft to transfer rotational power from the ceiling-mounted line-shaft to individual mechanical devices on the ground.[dubious ] A jackshaft with two belt pulleys could redirect the line-shaft belt power around an obstruction. Modern jackshafts are often hidden inside large machinery as a component of the larger overall device.

A PTO Shaft or jackshaft with a protective shield to prevent entanglement.

In farm equipment, a spinning output shaft on the rear of the vehicle is commonly referred to as the Power Take-Off or PTO, and the power-transfer shaft that is connected to it is commonly called a PTO shaft, but is also a jackshaft.

References


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Jackshaft (locomotive) — A jackshaft is a device for turning the wheels of a locomotive. It is essentially an axle with no wheels. Each end of the jackshaft has a crank pin and a counterweight. The driving wheels are then connected by side rods. The name may come from a… …   Wikipedia

  • jackshaft — /jak shaft , shahft /, n. Mach. 1. Also called countershaft. a short shaft, connected by belting, gears, etc., that transmits motion from a motor or engine to a machine or machines being driven (distinguished from main shaft). 2. a shaft on which …   Universalium

  • jackshaft — noun a) A common mechanical component used to transfer or synchronize rotational force in a machine. b) A wheelless axle used to turn the wheels of a locomotive. Syn: countershaft …   Wiktionary

  • jackshaft — n. short round motor shaft (as in an automobile) …   English contemporary dictionary

  • jackshaft — /ˈdʒækʃaft/ (say jakshahft) noun a short shaft, usually intermediate between the motor or engine and the machine to be driven …  

  • jackshaft — See intermediate shaft …   Dictionary of automotive terms

  • jackshaft — ˈ ̷ ̷ˌ ̷ ̷ noun Etymology: jack (I) (something smaller) + shaft : countershaft; specifically : the intermediate driving shaft in an automobile …   Useful english dictionary

  • Electric locomotive — Electric Trains redirects here. For the 1995 Squeeze single, see Electric Trains (song). An electric locomotive is a locomotive powered by electricity from an external source. Sources include overhead lines, third rail or an on board electricity… …   Wikipedia

  • Bavarian PtL 2/2 — as a model by TRIX The Class PtL 2/2 locomotives of the Royal Bavarian State Railways (Königlich Bayerische Staatseisenbahn) were light and very compact superheated steam locomotives for operation on Bavarian branch lines (known generally as… …   Wikipedia

  • British Rail Class 04 — Infobox Locomotive name = British Rail Class 04 powertype = Diesel mechanical caption = D2298, as preserved at the Buckinghamshire Railway Centre. (NB few examples were given any form of blue livery while in service with British Railways)… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”