A caster (or castor) is a type of wheel mounted with an offset steering pivot such that the wheel will automatically swivel to align itself to the direction from which it is pushed. They are commonly found on shopping carts and rolling chairs. Caster Caster is an anime character from the Japanese visual novel and anime series Fate/stay night by TYPE-MOON. An honored guest of the RyūdŠfamily, permitted to live at their temple until the preparations for her marriage have been finalized. ... Image File history File linksMetadata Size of this preview: 430 × 599 pixelsFull resolution (933 × 1300 pixel, file size: 292 KB, MIME type: image/jpeg) Caster wheels on a chair. ... Image File history File linksMetadata Size of this preview: 430 × 599 pixelsFull resolution (933 × 1300 pixel, file size: 292 KB, MIME type: image/jpeg) Caster wheels on a chair. ... The force bearing on the axle has an eccentricity e with the point of contact to the rolling surface and exerts a moment about the contact point. ... A pivot is that on which something turns. ... A row of parked (and very colorful) shopping carts equipped with a coin-operated mechanism. ... An office chair, or desk chair, is a chair that is designed for use at a desk in an office. ...
Design
The key to the function of a caster is a bearing above the wheel assembly that allows the wheel assembly to turn 360 degrees. A bearing is a device to permit constrained relative motion between two parts, typically rotation or linear movement. ...
Casters works best on smooth floors; for carpeted surfaces, a chair mat can be used for casters confined to a particular area without impeding movement or causing undue wear on the carpet.
θ is the caster angle, red line is the pivot line, grey area is the tire Caster (or castor) angle is the angular displacement from the vertical axis of the suspension of a steered wheel in a car or other vehicle, measured in the longitudinal direction. ... A caster board (or castor board) is a small, narrow platform attached to two caster trucks used for riding on most smooth surfaces. ...
Caster angle is the angular measure from the vertical of the suspension of a steeredwheel in a car or other vehicle, measured in the longitudinal direction.
It is to the angle between the pivot line (an imaginary line that runs through the center of the upper ball joint to the center of the lower ball joint) and vertical.
Excessive caster angle will make the steering heavier and less responsive, although, in racing, large caster angles are used to improve camber gain in cornering.
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