BBT Advantage
1. Improved surface finish & dimensional accuracy
2. Extended tool life
3. Prevention of fretting corrosion caused by heavy cutting.
4. Improvement of ATC repeatability.
5. Elimination of Z-axial movement at high speeds.
6. Improved roundness of boring operation.
7. According to the mechanics theory, the greater the diameter of the reference, the stronger the rigidity. The common system is the standard diameter of taper shank end diameter, while the benchmark BBT diameter is flange diameter, obviously enhances the rigidity