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Bearing alloys, bronze, aluminum-based alloys, zinc-based alloys, etc. are all called metal materials. Among them, bearing alloy, also known as white alloy, is mainly an alloy of lead, tin, antimony or other metals. It can have low strength under heavy load, high speed and other conditions. The reason is because of its characteristics, including good wear resistance, high plasticity, good running-in performance, good thermal conductivity, good glue resistance and good oil adsorption. However, because it is more expensive, when used, it must be poured on the bearing bush of bronze, steel strip or cast iron to form a thin coating.

Pillow block flange bearing products are vital components in the industrial equipment and components industry, specifically in the field of bearings. In this article, we will explore the features, applications, and advantages of these bearings, providing you with valuable, practical knowledge. Let's dive in!

Powder metallurgy is a processing method that prepares metal powder and makes products from metal powder or a mixture of metal powder and non-metal powder through processes such as shaping and sintering. It can not only prepare special materials that are difficult to prepare by ordinary smelting methods, but also manufacture various products. A kind of precision mechanical parts, saving labor and materials. However, the cost of molds and metal powder is high, and it should not be used when the batch size is small or the size of the product is too large. Compared with traditional material processes, powder metallurgy materials and processes have the following characteristics:

Contact fatigue failure refers to failure caused by alternating stress on the working surface of the bearing. Contact fatigue spalling occurs on the working surface of the bearing and is often accompanied by fatigue cracks. It first occurs from the maximum alternating shear stress below the contact surface, and then expands to the surface to form different spalling shapes, such as pitting or pitting spalling. Peeling off into small flakes is called shallow peeling. Due to the gradual expansion of the peeling surface, it often extends to deep layers, forming deep peeling. Deep spalling is a fatigue source of contact fatigue failure.

The fit between the inner hole of the bearing and the shaft adopts the base hole system, and the fit between the outer circle of the bearing and the bearing seat hole adopts the base shaft system. Generally, the shafts and bearing inner races of centrifugal pumps, centrifuges, reducers, electric motors and centrifugal compressors that work under normal load conditions use J5, js5, js6, k5, k6, m6, and the bearing seat hole and bearing The outer race uses j6 and J7 fit. The rotating seat ring (the inner seat ring of most bearings is a rotating seat ring, the outer seat ring is not a rotating seat ring, and a small number of bearings are the opposite), usually using an interference fit, which can prevent the seat ring from being in the shaft diameter under load. Rolling and sliding occur on the mating surface of the bearing housing bore.