bearing

bearing
/bair"ing/, n.
1. the manner in which one conducts or carries oneself, including posture and gestures: a man of dignified bearing.
2. the act, capability, or period of producing or bringing forth: a tree past bearing.
3. something that is produced; a crop.
4. the act of enduring or capacity to endure.
5. reference or relation (usually fol. by on): It has some bearing on the problem.
6. Archit.
a. a supporting part of a structure.
b. the area of contact between a bearing member, as a beam, and a pier, wall, or other underlying support.
7. Mach. the support and guide for a rotating, oscillating, or sliding shaft, pivot, or wheel.
8. Often, bearings. direction or relative position: The pilot radioed his bearings.
9. Survey. a horizontal direction expressed in degrees east or west of a true or magnetic north or south direction.
10. Heraldry. any single device on an escutcheon; charge.
[1200-50; ME beryng. See BEAR1, -ING1]
Syn. 1. carriage, mien, demeanor, behavior, conduct. See manner1. 5. connection, dependency; application. 8. course, aim.

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I
In machine construction, a connector (usually a support) that permits the connected members to rotate or to move in a straight line relative to one another.

Often one of the members is fixed, and the bearing acts as a support for the moving member. Most bearings support rotating shafts against either transverse (radial) or thrust (axial) loads. To minimize friction, the contacting surfaces in a bearing may be separated by a film of oil or gas; these are sliding bearings (see oil seal). In ball bearings and roller bearings, the surfaces are separated by balls or rollers.
II
(as used in expressions)
load bearing wall

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▪ machine component
      in machine construction, a connector (usually a support) that permits the connected members to rotate or to move in a straight line relative to one another. Often one of the members is fixed, and the bearing acts as a support for the moving member.

 Most bearings support rotating shafts against either transverse (radial) or thrust (axial) loads. To minimize friction, the contacting surfaces in a bearing may be partially or completely separated by a film of liquid (usually oil) or gas; these are sliding bearings, and the part of the shaft that turns in the bearing is the journal. The surfaces in a bearing may be separated also by balls or rollers; these are known as rolling bearings. In the illustration—>, the inner race turns with the shaft.

      Under certain combinations of load, speed, fluid viscosity, and bearing geometry, a fluid film forms and separates the contacting surfaces in a sliding bearing; this is known as a hydrodynamic film. An oil film can also be developed with a separate pumping unit that supplies pressurized oil to the bearing; this is known as a hydrostatic film.

      Because shaft speed is required for the development of a hydrodynamic film, the starting friction in these bearings is higher than in ball or roller bearings. To minimize friction when metal-to-metal contact occurs, low-friction-bearing materials have been developed; among these are bronze alloys and babbitt metal. See also ball bearing; roller bearing.

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Universalium. 2010.

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Synonyms:
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Look at other dictionaries:

  • Bearing — Bear ing (b[^a]r [i^]ng), n. 1. The manner in which one bears or conducts one s self; mien; behavior; carriage. [1913 Webster] I know him by his bearing. Shak. [1913 Webster] 2. Patient endurance; suffering without complaint. [1913 Webster] 3.… …   The Collaborative International Dictionary of English

  • bearing — n Bearing, deportment, demeanor, mien, port, presence are comparable when they denote the way in which or the quality by which a person outwardly manifests his personality and breeding. Bearing is the most general of these words; it may imply… …   New Dictionary of Synonyms

  • bearing — [ber′iŋ] n. 1. way of carrying and conducting oneself; carriage; manner; mien 2. a support or supporting part 3. a) the act, power, or period of producing young, fruit, etc. b) ability to produce c) anything borne or produced, as a crop, fruit,… …   English World dictionary

  • Bearing — may refer to: * Bearing (navigation), a term for direction * Bearing (mechanical), a component that separates moving parts and takes a load …   Wikipedia

  • bearing — [n1] person’s conduct, posture address, air, aspect, attitude, behavior, carriage, comportment, demeanor, deportment, display, front, look, manner, mien, poise, port, pose, presence, set, stand; concepts 411,633 bearing [n2] significance… …   New thesaurus

  • bearing — ► NOUN 1) a person s way of standing, moving, or behaving. 2) relation; relevance: the case has no bearing on the issues. 3) (bearings) a device that allows two parts to rotate or move in contact with each other. 4) direction or position relative …   English terms dictionary

  • bearing — index behavior, color (complexion), conduct, connection (relation), connotation, content (meaning …   Law dictionary

  • bearing on — index relative (relevant) Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • bearing — carrying of oneself, deportment, mid 13c., from BEAR (Cf. bear) (v.). Mechanical sense of part of a machine that bears the friction is from 1791 …   Etymology dictionary

  • bearing — [1] The area of a unit in which the contacting surface of a revolving part rests in order to minimize wear and friction between two surfaces. [2] An antifriction reducing device that is usually found between two moving parts. The babbitt bearings …   Dictionary of automotive terms

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