/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.
* * *IIn 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
* * *▪ machine componentin 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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