crank

(redirected from Crank Case)
Also found in: Dictionary, Thesaurus, Medical.
Related to Crank Case: crankcase breather

crank,

mechanical linkage consisting of a bar attached to a pivot at one of its ends in such a way that it is capable of rotating through a complete circle about the pivot. One of the principal uses of a crank is to turn reciprocating, or back and forth, motion into rotary motion or vice versa. A bell crank is one designed to change the direction of a linear motion.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Crank

 

the simplest rotating part of a crank mechanism. It has a cylindrical projection, the pin, whose axis is displaced relative to the axis of rotation of the crank by a distance r, which may be fixed or variable (see Figure 1).

Figure 1. Types of crank: (a) with constant radius r of pin displacement, (b) with r regulated by a slide, (c) with r regulated by a rotating disk

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

crank

[kraŋk]
(mechanical engineering)
A link in a mechanical linkage or mechanism that can turn about a center of rotation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

Crank

In a mechanical linkage or mechanism, a link that can turn about a center of rotation. The crank's center of rotation is in the pivot, usually the axis of a crankshaft, that connects the crank to an adjacent link. A crank is arranged for complete rotation (360°) about its center; however, it may only oscillate or have intermittent motion. A bell crank is frequently used to change direction of motion in a linkage (see illustration). See Linkage (mechanism)

Cranks ( a ) for changing radius of rotation, and ( b ) for changing direction of translationenlarge picture
Cranks (a) for changing radius of rotation, and (b) for changing direction of translation
McGraw-Hill Concise Encyclopedia of Engineering. © 2002 by The McGraw-Hill Companies, Inc.

crank

crank
In a mechanical linkage or mechanism, a link that can turn about a center of rotation. The crank's center of rotation is in the pivot, usually the axis of the crankshaft, that connects the crank to the adjacent link. A crank is arranged for complete rotation (i.e., through 360°) about its center; however, it may only oscillate or have intermittent motion. A bell crank is frequently used to change the direction of the motion in a linkage.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved

crank

1
1. a device for communicating motion or for converting reciprocating motion into rotary motion or vice versa. It consists of an arm projecting from a shaft, often with a second member attached to it parallel to the shaft
2. a handle incorporating a crank, used to start an engine or motor

crank

2, cranky
(of a sailing vessel) easily keeled over by the wind; tender
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

crank

(Automotive slang) Verb used to describe the performance of a machine, especially sustained performance. "This box cranks (or, cranks at) about 6 megaflops, with a burst mode of twice that on vectorised operations."
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)
References in periodicals archive ?
On inspection of the quad afterwards Jack found both crank cases had split and his engine had lost nearly all its oil.
It is equipped with an upgraded four-stroke, parallel-twin engine, coupled with new age pistons, crank cases and cylinders.
The plant will start making crank cases, chain covers and other engine parts in August 2005 with the aim of chalking up 1.6 billion yen in annual sales in fiscal 2007, the officials said.