UK cotter pin from a bicycle crank
Template:Otheruses
A cotter is a pin or wedge passing through a hole to fix parts tightly together. In British usage cotter pin has the same meaning,[1] but in U.S. it refers to different fasteners.
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.
Popular usage[]
Formerly, it was common to mount bicycle crank arms using a cotter, though now usually a more easily maintained arrangement is used such as a square tapered or splined interface. 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.
Because bicycle cotters were normally retained by a nut and washer, the distinction was unimportant in this context.
See also[]
- Bottom bracket
- Crankset
- Taper pin
Referenced[]
- ↑ Template:Citation.
External links[]
de:Keil (Technik) sv:Sprint (teknik)