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Hot rolled bearing steel ball

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Hot rolled bearing steel ball

Product properties

We have four advanced Newton induction heating rolled ball production lines. The contact fatigue life of hot rolled bearing steel ball billet without a band is high, and the vibration occurs in the next process of grinding is small. Controlled atmosphere light ball annealing process is adopted, and the decarburization layer is shallow.

● GB/T18254 high carbon chromium bearing steel
● JB/T1255 rolling bearing parts heat treatment technical conditions for high carbon chromium bearing steel
● Q/320581DXB004 hot rolled and hot forged high carbon chromium bearing steel ball billet


Process features

● Without girdle:There is little damage to the hot forged metal flow line with reasonable distribution, long contact fatigue life, and low vibration in grinding the steel ball.
● Size of the ball billet:Dimensional stability, small allowance, and high grinding efficiency.
● Surface quality:Surface defect depth is no more than two-thirds of unilateral minimum allowance to guarantee the elimination of all ball grinding process.
● Microstructure (excluding inclusion carbide uniformity),Stricter control indicators than national standards.




Technical parameter

Product Name Ball blank diameter Model
Hot rolled bearing steel ball
21.0~53.5
∮19.8438mm~∮50.08mm

Qualification certificate

Hot rolled bearing steel ball certified by product certification including:Grinding steel ball ISO90012008,Grinding steel ball OHSAS18001:2007,RioTinto approved suppliersetc,Bhpbilliton approved suppliersetc[View more related certificates]

Market application area