Metal Sleeve 30*40*50

Reducing Friction and Wear: This is the most critical function of a bushing. In areas where there is relative rotation or reciprocating motion between a shaft and a hole (such as hinges, connecting rods, and piston pins), the bushing serves as a replaceable wear-resistant layer that directly contacts the moving parts. By using materials softer than the base material or with self-lubricating properties (such as bronze, graphite nylon, or powder metallurgy materials), the bushing wears preferentially, thereby protecting more expensive and critical shaft and housing components, significantly extending their service life and reducing maintenance costs.
Support and Positioning: The bushing provides precise support and radial positioning for rotating shafts or reciprocating components such as pistons. It ensures that moving parts operate along the correct trajectory, preventing misalignment and shaking caused by excessive clearance, thereby maintaining operational accuracy and stability of the equipment. For instance, in the big-end and small-end holes of an automotive engine's connecting rod, the bushing ensures the accurate positioning of the piston pin and crankshaft.

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