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A bearing surface in
A bearing surface in mechanical engineering
Mechanical engineering is the study of physical machines that may involve force and movement. It is an engineering branch that combines engineering physics and mathematics principles with materials science, to design, analyze, manufacture, and ...
is the area
Area is the quantity that expresses the extent of a region on the plane or on a curved surface. The area of a plane region or ''plane area'' refers to the area of a shape
A shape or figure is a graphics, graphical representation of an obje ...
of contact between two objects. It usually is used in reference to bolted joint
A bolted joint is one of the most common elements in construction and machine design. It consists of a male threaded fastener (e. g., a bolt) that captures and joins other parts, secured with a matching female screw thread. There are two main t ...
s and bearings, but can be applied to a wide variety of engineering applications.
On a screw
A screw and a bolt (see '' Differentiation between bolt and screw'' below) are similar types of fastener typically made of metal and characterized by a helical ridge, called a ''male thread'' (external thread). Screws and bolts are used to fa ...
the bearing area loosely refers to the underside of the head. Strictly speaking, the bearing area refers to the area of the screw head that directly bears on the part being fastened.
For a cylindrical bearing it is the projected area
Projected area is the two
dimensional area measurement of a three-dimensional object by projecting its shape on to an arbitrary plane. This is often used in mechanical engineering and architectural engineering related fields, specifically hardne ...
perpendicular to the applied force.
On a spring
Spring(s) may refer to:
Common uses
* Spring (season)
Spring, also known as springtime, is one of the four temperate seasons, succeeding winter and preceding summer. There are various technical definitions of spring, but local usage of ...
the bearing area refers to the amount of area on the top or bottom surface of the spring in contact with the constraining part..
The ways of machine tool
A machine tool is a machine for handling or machining metal or other rigid materials, usually by cutting, boring, grinding, shearing, or other forms of deformations. Machine tools employ some sort of tool that does the cutting or shaping. All m ...
s, such as dovetail slides, box ways, prismatic ways, and other types of machine slides are also bearing surfaces.
See also
*Babbitt
Babbitt may refer to:
Fiction
* ''Babbitt'' (novel), a 1922 novel by Sinclair Lewis
** ''Babbitt'' (1924 film), a 1924 silent film based on the novel
** ''Babbitt'' (1934 film), a 1934 film based on the novel
*Babbit, the family name of the titl ...
, an alloy that covers a bearing surface
*Bridge bearing
A bridge bearing is a component of a bridge which typically provides a resting surface between bridge piers and the bridge deck. The purpose of a bearing is to allow controlled movement and thereby reduce the stresses involved. Possible causes o ...
* Pillow block bearing
A pillow block bearing (or plummer block) is a pedestal used to provide support for a rotating shaft with the help of compatible bearings and various accessories. The assembly consists of a mounting block which houses a bearing. The block is mou ...
* Plain bearing
A plain bearing, or more commonly sliding contact bearing and slide bearing (in railroading sometimes called a solid bearing, journal bearing, or friction bearing), is the simplest type of bearing, comprising just a bearing surface and no rolli ...
References
Bibliography
*. *. Bearings_(mechanical) Mechanical engineering {{mech-engineering-stub