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"BBT" Tool Holder Provides More "Rigid" Clamping than the Standard "BT" Tool Holders.
Achieves Higher "Radial Rigidity".
Improves Tool Life.
Balanced to 2.5G, 25000 RPM.
Material :- Case hardened steel, tensile strength in the core min. 950 N/mm²
Execution :-Case hardened to HRC 58 ± 2. Case Depth 0.8mm., Silver finish.
Accuracy :- 7:24 Taper Angle Class AT 3 As per DIN 2080
In BBT Tool Holder as mentioned Taper and both faces are in Contact, due to which spindle and holder acts as one single unit, this allows a Higher "Radial Rigidity" hence we get good surface finish and dimensional accuracy while machining, also low vibration at higher speeds which increases Tool Life. Hence BBT Tool Holder has a remarkable significant as compared to Standard Tool Holders.
BBT Tool Holders are only recommended to use in Calibrated BBT Spindle Machines.