Q: What are the characteristics of porous bearing?

A: Porous bearing

Porous Bearing, that is, Porous Bearing, sintered body prepared by powder metallurgy with metal powder as the main raw material, is inherently Porous, and has the technical advantages of freely adjusting the number, size, shape and distribution of pores in the manufacturing process. Using the porosity of sintered body, the sintered body contains 10%~40%(volume fraction) lubricating oil and can be used in the condition of self-supply oil. When the bearing is running, the temperature rises. Because the expansion coefficient of oil is larger than that of metal, it automatically enters the sliding surface to lubricate the bearing. When the bearing stops working, the oil is sucked back into the pores with the temperature dropping.

Features

Porous bearing has the characteristics of low cost, vibration absorption, low noise, no need to add lubricating oil in a long working time. Porosity is an important parameter of porous bearing. porous bearing working at high speed and light load requires high oil content and high porosity. Oil-bearing bearing with low speed and large load requires high strength and low porosity. This kind of bearing was invented at the beginning of the 20th century, and has been widely used because of its low manufacturing cost and convenient use. Now it has become an indispensable basic part for the development of various industrial products such as automobile, household appliances, audio equipment, office equipment, agricultural machinery and precision machinery.

porous bearing is divided into copper - based, iron - based, copper - iron - based and so on.

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