What Are The Materials Used To Make Radial Bearings?

Radial bearings, or radial bearings, are a type of bearings that are mainly used to bear radial loads. Its nominal pressure angle is usually between 0 and 45. Radial ball bearings are often used in high-speed applications and are composed of precision balls, cages, inner and outer rings, etc. This kind of bearing has been widely used in machinery industry, automobile, cement mine, chemical industry and electrical appliances and other fields.

In order to meet the working capacity requirements of equipment for radial bearings, the materials used to manufacture radial bearings must have strong load capacity, embedding, thermal conductivity, low friction and smooth surface, anti-wear, anti-fatigue and corrosion resistance. There is currently no material that meets all the criteria perfectly, so a compromise is usually chosen in most designs. Materials commonly used in the manufacture of radial bearings include the following:

Bearing alloy:

Bearing alloy, also known as Babbitt alloy, is the most widely used bearing alloy. It can adapt to the automatic adjustment of small misalignment or defective shafts, and can absorb the sundries in the lubricant to avoid the shaft from being damaged by glueing.

Bronze:

Bronze bearings are suitable for low-speed, heavy-load and good neutral requirements, and their performance can be obtained by making alloys with various materials with different components.

Lead copper:

Bearings made of lead copper; its load capacity is higher than that of bearing alloys, but its relative adaptability is poorer, and it is used in an environment with good shaft rigidity and good neutrality.

Cast iron:

Cast iron bearings are often used in occasions with less stringent requirements. However, the hardness of the journal is required to be higher than that of the bearing bush, and the working surface also needs to be carefully run-in through the mixed colloid of graphite and oil, and the alignment between the journal and the bearing must be good.

Porous bearings:

Porous bearings are manufactured by sintering metal powder and immersing them in oil. They have self-lubricating properties and are mainly used in occasions where it is difficult or impossible to lubricate reliably.

Carbon and plastic:

Pure carbon bearings are suitable for high temperature occasions or occasions that are difficult to lubricate, while bearings made of polytetrafluoroethylene have an extremely low coefficient of friction and can withstand intermittent at low speeds even when working without oil lubrication Swing and reload.