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What is the difference between bush and collar, and hub and flange
A bush is a mechanical fixing between two, possibly moving, parts, or a strengthened fixing point where one mechanical assembly is attached to another. In a car or other vehicle's suspension, bushes are used to connect the various moving arms and pivot points to the chassis and other parts of the suspension.
Shaft collars are useful in machine applications for holding components on shafts. They serve as mechanical stops and stroke limiters.Collar is a mechanical fastener .A cylindrical feature on a part fitted on a shaft used to prevent sliding (axial) movement.
Hub:the central portion of a wheel, propeller, fan, etc, through which the axle passes . Flange is a projecting rim or edge for fastening, stiffening or positioning.the central portion of a wheel, propeller, fan, etc, through which the axle passes .
Bush is a cylindrical lining designed to reduce friction and wear, or constrict and restrain motion of mechanical parts. It is the most common form of a plain bearing.
Flange is a projecting rim or edge for fastening, stiffening or positioning.
