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A ball bearing. A bearing is a machine element that constrains relative motion to only the desired motion and reduces friction between moving parts.The design of the bearing may, for example, provide for free linear movement of the moving part or for free rotation around a fixed axis; or, it may prevent a motion by controlling the vectors of normal forces that bear on the moving parts.
A ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the bearing races.
The design of a plain bearing depends on the type of motion the bearing must provide. The three types of motions possible are: Journal (friction, radial or rotary) bearing: This is the most common type of plain bearing; it is simply a shaft rotating in a hole. [3]
A bearing surface in mechanical engineering is the area of contact between two objects. It usually is used in reference to bolted joints and bearings , but can be applied to a wide variety of engineering applications.
Bearing(s) may refer to: Bearing (angle), a term for direction; Bearing (mechanical), a component that separates moving parts and takes a load;
A spherical bearing is a bearing that permits rotation about a central point in two orthogonal directions (usually within a specified angular limit based on the bearing geometry). Typically these bearings support a rotating shaft in the bore of the inner ring that must move not only rotationally, but also at an angle.