How much precision can the boring hole reach?
The precision of the fine boring can reach IT8 ~ IT7 (high precision when the hardness of the material is high), the surface roughness Ra is 1.6 ~ 0.8μm, and the surface finish is up to 1.8 ~ 0.4μm.
Boring is for further processing of forging, casting or drilling holes, boring can expand the aperture, improve accuracy, reduce the surface roughness, but also can better correct the original hole axis deflection.
Fine boring can reach the highest accuracy is: dimensional accuracy up to IT8 ~ IT7, surface roughness Ra value of 1.6 ~ 0.8μm, surface finish 1.8 ~ 0.4μm (high hardness of the processing material to take a higher precision value).
Boring can be divided into rough boring, semi-fine boring and fine boring.
