Rings and rolling element materials of bearings

Rings and rolling element materials of bearing, how much do you learn more?

Rings and rolling elements are usually made of high-carbon chrome bearing steel. Most of the bearings use CCr15, for the larger cross-section bearing rings and larger diameter rolling body with good hardenability CCrl5SiMn. High-carbon chromium bearing steel for the whole hardened steel, its surface and the heart can be hardened, is the best material for rolling bearings.

Due to the use of different occasions, some bearings require materials with special properties, such as impact resistance, high temperature resistance, corrosion resistance and so on.

The work of bearings or large, very large bearings bearing ring and rolling body usually use carburised bearing steel. Carburised bearing steel is in chromium molybdenum steel, chromium nickel molybdenum steel or chromium manganese molybdenum steel and other materials within the appropriate depth of the surface layer of the carburisation, so that it has a dense organisation, and the formation of hardened layer, and the centre part of the hardness is low, with a better heart impact toughness, due to the use of carburised bearing steel performance is very good, and the life of its life calculation and high carbon chromium bearing steel.

For high temperature work under the bearing with good heat resistance of high temperature bearing steel manufacturing for work in contact with corrosive media bearing with stainless bearing steel manufacturing.

It is worth noting that the cleanliness of the bearing steel, the higher the cleanliness, the less non-metallic inclusions, the lower the oxygen content, bearing fatigue life is the longer, vacuum degassing or vacuum remelting steel to meet this requirement. For the requirements of high reliability of the bearing should be used electroslag remelted steel manufacturing.

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