Results for cotter
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Dictionary:

cotter

  (kŏt'ər) pronunciation
n.
  1. A bolt, wedge, key, or pin inserted through a slot in order to hold parts together.
  2. A cotter pin.

[Origin unknown.]


 
 
Architecture: cotter

A beveled piece of wood or steel, used as a wedge for fastening.


 
WordNet: cotter
Note: click on a word meaning below to see its connections and related words.

The noun has 3 meanings:

Meaning #1: a peasant farmer in the Scottish highlands
  Synonym: cottar

Meaning #2: a medieval English villein
  Synonym: cottier

Meaning #3: fastener consisting of a wedge or pin inserted through a slot to hold two other pieces together
  Synonym: cottar


 
Wikipedia: cotter


In mechanical engineering a cotter is a pin or wedge passing through a hole to fix parts tightly together.

Typical applications are in fixing a crank to its crankshaft, as in a bicycle, or a piston rod to a crosshead, as in a steam engine.

Nomenclature confusion: cotters vs. cotter pins

A cotter, particularly one with a circular cross-section, may be referred to as a cotter pin, but this is confusing. A cotter pin (or spilt-pin) is so named for its use in retaining a cotter. A cotter is an intended to take considerable shear loads, while a cotter pin is not, having to be soft enough to allow it to secured by bending it.

Bicycle Cotter

A wedge-shaped steel pin is used to mount cottered bicycle crank arms, though this is outdated technology that has generally been replaced by better interfaces such as the square taper and splined interfaces. (more about crank attachment technology). These cotters have a short threaded section at the narrower end of the taper, which is used to hold the cotter in place with a washer and nut.

A bicycle-specific tool, called a cotter press, is used to install and remove cotters. A cotter press is designed to apply extremely high pressure to either end of a cotter to alternately press it into place or remove it. Once a cotter is correctly pressed into place, a washer and nut should be installed on the protruding threaded stub to ensure that the cotter will not work loose over time. This threaded stub is not designed to pull the cotter into place, and using it for this will not sufficiently wedge the cotter into place and will often damage or break off the threaded stud.

Careful use of a hammer can be substituted for a cotter press, but this will usually damage cotters or even break them off beneath the surface of the crank. Positioning a small block of wood on top of the cotter will reduce the chance of damage to the cotter and bearings.

See also


 
Translations: Translations for: Cotter

Dansk (Danish)
n. - landarbejder, forpagter, fæstebonde, splitkile

Nederlands (Dutch)
spie

Français (French)
n. - (Hist) valet de ferme, (Écosse) paysan, (Tech) goupille fendue

Deutsch (German)
n. - Splint

Ελληνική (Greek)
n. - περόνη, γκαβίλια

Italiano (Italian)
bietta, contadino bracciante

Português (Portuguese)
n. - aldeão (m)

Русский (Russian)
фермер-арендатор, шпонка

Español (Spanish)
n. - chaveta, cuña, pasador

Svenska (Swedish)
n. - torpare (skotsk.), sprint

中文(简体) (Chinese (Simplified))
住茅屋的人, 农场雇工

中文(繁體) (Chinese (Traditional))
n. - 住茅屋的人, 農場雇工

한국어 (Korean)
n. - 오두막집에서 사는 사람, 코터, 비녀 못

日本語 (Japanese)
n. - 小屋住み農, 横くさび, 込み栓
v. - コッターで結合する

العربيه (Arabic)
‏(الاسم) قطعه لتثبيت جزئين, سفين‏

עברית (Hebrew)
n. - ‮זיז המחבר חלקי מכונה, אריס, איכר, פין מתפצל, אדם הגר בבית קטן מחוץ לעיר‬


 
 

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Copyrights:

Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved.  Read more
Architecture. McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc. All rights reserved.  Read more
WordNet. WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved.  Read more
Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Cotter" Read more
Translations. Copyright © 2007, WizCom Technologies Ltd. All rights reserved.  Read more

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