BN-H11 PCBN Insert machining HRC60~62 bearings from Halnn Supehard China supehard Cutting tools supplier

BN-H11 PCBN Insert machining HRC60~62 bearings from Halnn Supehard China supehard Cutting tools supplier

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.

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.

One of the application case as follows;

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