Bearing steels can include a wide variety of compositions, each specialized in terms of the chosen or most economically favorable processing route of a particular bearing maker.
They have in common the need for careful steelmaking practices to maintain the steel cleanness necessary for longer bearing life. As the demands of the bearing application increase, the steels may be made by such premium practices as melting under vacuum to further avoid introducing nonmetallic inclusions into the steels.
The future of bearing steels will be defined by the search for an “ideal” material which will combine improvements in surface hardness, fracture toughness, hardness retention at increased temperatures, and corrosion resistance.
|Bulk modulus (typical for steel)||140 GPa||20300 ksi|
|Shear modulus (typical for steel)||80 GPa||11600 ksi|
|Elastic modulus||190-210 GPa||27557-30458 ksi|
|Hardness, Knoop (converted from Rockwell C hardness)||875||875|
|Hardness, Rockwell C (quenched in oil from 150°C tempered)||62||62|
|Hardness, Rockwell C (quenched in water from 150°C tempered)||64||64|
|Hardness, Rockwell C (quenched in oil)||64||64|
|Hardness, Rockwell C (quenched in water)||66||66|
|Hardness, Vickers (converted from Rockwell C hardness)||848||848|
|Machinability (spheroidized annealed and cold drawn. Based on 100 machinability for AISI 1212 steel)||40||40|
RC hobby steel bearing MR105 MR105ZZ MR105-2RS 5x10 bearings
2RS rubber seals/ ZZ metal shields/Open
P0, P5, P6
C0, C2, C3, C4
10pcs/tube+White small box+Carton
By air/by sea/by train
Bearings are essential to manufacturing and are used in many different types of equipment and machinery.
From basic industrial equipment to complex machinery, bearings reduce friction and make it possible to handle different types of loads.
Therefore, the use of quality and reliable materials is vital to the bearing manufacturing process.
Different materials are used to produce various types of quality bearings and their many components.
These materials undergo specific processes to achieve the desired properties, improving both bearing lifespan and performance.
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