A sleeve bearing (also known as a bushing bearing or plain bearing) is a straightforward and fundamental type of bearing. It primarily consists of an inner metal sleeve (known as the bushing) and an outer metal sleeve. Between these two sleeves is a layer of special lubricating material. This is usually a sliding surface covered in grease or oil.
In the realm of mechanical intricacies, the unassuming bearing bushings take center stage. This exploration delves deep into the core of these vital components, unraveling the essence of bushings, their construction intricacies, and diverse applications. We'll uncover the advantages these bushings offer, from friction reduction to uniform load distribution, and delve into the key considerations that guide the selection of the right bushing.
Generally, "bearings" facilitate movement between two parts and reduce friction. A typical bearing has two surfaces that roll against each other, allowing the two mating parts to move without friction.
Bushing bearings, also known as dry bearings or DU bearings, belong to a Bushing series, and are a type of sliding bearing known for their excellent self-lubricating properties. These bearings are composed of multiple layers, collectively providing stable and maintenance-free operation.
The fundamental working principle of bushing bearings involves the formation of a transfer film of solid lubricant on the bearing surface during the initial operating stages. This film develops through the frictional interaction and eventually coats the mating component, creating a solid lubricating layer and achieving self-lubrication.
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