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Help CenterBN-S200 Solid CBN Insert Machining Bearings Above HRC45 With 52100 Materials
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BN-S200 Solid CBN Insert machining bearings above HRC45 with 52100 materials
Bearings, as one of the most important components in modern machine tools, common bearings materials include GCr15(E52100,100Cr6 or SUJ2) ,42CrMo(42CrMo4) ect materials.
In order to make sure long work time of the bearings, the manufacturer usually use heat treatment process to improve the hardness, wear resistance, toughness, and the hardness after heat treatment will be above HRC45, and some will reach HRC60, it also require high on the size precision, surface roughness. In early times, they use grinding process to obtain these characteristics, but with the development of the society, the efficiency of grinding process is low, the manufacturers are trying to searching other methods.
With the development of the cutting tools industry, turning instead of grinding process already become a trend, and turning instead of grinding also require high on the new cutting tools.
pecific for high hardness bearings after heat treatment, we can choose ceramic cutters and pcbn inserts. Ceramic cutters are well known, and we can decide whether to choose ceramic cutters as the working allowance. For example, you’d better not choose ceramic cutters when allowance is larger than 1mm, ceramic cutters only suit for the working condition with small allowance and continuous process.
Specific for high hardness bearings after heat treatment, we can choose ceramic cutters and pcbn inserts. Ceramic cutters are well known, and we can decide whether to choose ceramic cutters as the working allowance. For example, you’d better not choose ceramic cutters when allowance is larger than 1mm, ceramic cutters only suit for the working condition with small allowance and continuous process.
The application case for machining bearings with cbn insert
(1) Finish turning slew bearings raceway, end surface, the hardness is about HRC47~55, the allowance is less than 2mm, we can choose Halnn non-metal adhesive BN-S200 solid cbn insert, the cutting parameters as follows: ap≤1mm，Fr=0.05-0.35mm/r，Vc=60-250m/min, machining effect: The tool life will be 7 times of ceramic cutters, and the roughness can be controlled within Ra0.6~1.0mm.
(2) Finish turning the Cylindrical,endsurface, the hardness is HRC47~55, the allowance will be above 2mm, we recommend Halnn BN-S20 solid cbn insert, the cutting data: ap=1mm，Vc=140-180m/min, the processing efficiency: the tool life is longer and the roughness can reach Ra0.4.
(3) Finish turning the cylindrical and the inner bore, the hardness will be about HRC62, we choose Halnn BN-H11 pcbn insert, the cutting data: ap≤1mm，Fr=0.05-0.35mm/r，Vc=60-250m/min, machining effect: the roughness can be controlled within Ra0.8
For hard turning bearings, we need to choose the cutting tools depending on the bearings hardness, allowance, working condition. Specific for different machining part, we need to choose the right cbn grade, so when you meet any problems on machining bearings, please feel free to contact with us halnntools@gmail.com, Whatsapp:+8618695866134, Wechat: halnntools.
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Email:halnntools@gmail.com
Skype:cbn_inserts_angels
Wechat:Halnntools
Whatsapp:+8618695866134
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