Aluminum sleeve, Dnipropetrovsk region.

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Bushings from aluminum alloys installed in housings from. materials with a low coefficient of linear expansion (steel, cast iron) can acquire final compression deformations when the temperature rises. In such cases, minimum seating tensions are used with mandatory locking of the bushings. It is recommended to increase the diameter of the locking pins to avoid crushing the bearing material. Metallic materials include ferrous metals (iron and steel), alloys of non-ferrous metals (bronze, brass, babbitt), light alloys (aluminum and magnesium), bimetals. Ferrous metals are the main machine-building materials. They are relatively cheap, have high strength. Alloys of non-ferrous metals are expensive, but they have high antifriction properties and are well processed by cutting. Light alloys (silumin, duralumin, etc.) have a low density and have good casting properties.  (//tractor-service.com)

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