It mainly adopts the raw materials of large steel mills, and carries out strict production according to the international standard ISO3290 and GB/ t308-2013.
Condar bearing steel ball
Production material
GCr15, AISI52100, SUJ2, 100Cr6
The production specification
1.0 mm to 25.4 mm
Production level
The G5 G10 / G16 / G20 / G40
Application field
Precision bearing, home appliance bearing, auto parts, wind power generation, precision machinery parts, ball screw and so on
Main production specifications 1.0mm-25.4mm, main grades G5/G10/G16/G20 precision bearing steel ball steel ball.
Mainly used in precision bearings, home appliances bearings, auto parts, wind power generation, precision machinery parts, ball screw and other fields.Can also be customized according to customer requirements for a variety of non - standard steel balls.
brand
Chemical composition (mass fraction), %
Hardness HBS
(after annealing)
C (carbon)
Mn (Mn)
Si (silicon),
P (P)
S (S)
Cr (Cr)
GCr9
1.00 ~ 1.10
0.25 ~ 0.45
0.15 ~ 0.35
0.025 or less
0.025 or less
0.90 ~ 1.20
179 ~ 207
GCr9SiMn
1.00 ~ 1.10
0.95 ~ 1.25
0.45 ~ 0.75
0.025 or less
0.025 or less
0.90 ~ 1.20
179 ~ 217
GCr15
0.95 ~ 1.05
0.25 ~ 0.45
0.15 ~ 0.35
0.025 or less
0.025 or less
1.40 ~ 1.65
179 ~ 207
GCr15iMn
0.95 ~ 1.05
0.95 ~ 1.25
0.45 ~ 0.75
0.025 or less
0.025 or less
1.40 ~ 1.65
179 ~ 217
High carbon chromium bearing steel grades are indicated by adding the symbol "G" to the top of the grades without indicating the carbon content.The chromium content is expressed in thousandths of a percent, and the other alloying elements are expressed in the same way as the alloying content of alloy structural steels.For example, bearing steel with an average chromium content of 1.5% is labeled "GCr15".
Bearing steel has high hardness, tensile strength, contact fatigue strength and wear resistance, and considerable toughness, to meet the requirements of corrosion resistance and high temperature resistance under certain conditions.
High carbon chromium bearing steel has high carbon content (0.95-1.05%), high and even hardness can be obtained after quenching, long fatigue life, the disadvantage is that the impact toughness of large load is slightly poor.The high carbon chromium bearing steel is mainly used as the ring and roller of the rolling bearing under general service conditions.Carburized bearing steel has a low carbon content (not more than 0.23%). After carburizing, the surface hardness is improved, while the core still has good toughness and can bear a large impact load.It is mainly used for making bearing with large impact load in large machinery.
Bearing steel ball is one of the important parts of ball bearing, the quality of which affects the dynamic performance and service life of the bearing to a great extent.
