Bushing

The automotive bushing, also known as a shaft sleeve or bearing sleeve, primarily serves to reduce friction and wear during shaft movement. These sliding bearings are commonly used in automotive components to separate two metal parts, preventing direct collision, friction damage, or noise generation. Bushings are more cost-effective than rolling bearings, although they do exhibit higher friction resistance, which is why they are typically used in specific components.

Bushings are often made of copper, but plastic bushings are also available. When vehicles are in motion, these bushings absorb vibrations, reduce noise, and effectively isolate energy transmission to the bushing, allowing vehicles to travel smoothly even on uneven road surfaces.

Regarding the Machining Methods for Automotive Bushings:

Lathe (Turning): Used to process rotating components such as shafts, sleeves, and gears. The workpiece is fixed on the spindle, and the cutting tool follows the rotational axis of the workpiece for precision turning.
Milling Machine: Suitable for shaping flat surfaces, profiles, and irregularly shaped workpieces, such as flats and gears. Milling cutters follow different motion paths to achieve high-precision flat machining.
Surface Grinder: Used to grind the surface of workpieces to achieve the desired precision and smoothness. Surface grinders operate in a rotational manner but are primarily used for grinding rather than cutting. They are suitable for achieving smooth and flat surfaces, such as the outer circumference of bushings.

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