8
BBT30
BBT40
BBT50
15 - 20
45 - 65
85 - 115
BT No.
Tightening torque (N m)
Caution
Caution
Do not loosen the 6 red-painted bolts. It may become
cause of damages or worsen the accuracy.
The direction of the air nozzles can be set in 4 directions at 90˚ each. If, due to the emitted air, the
application of the coolant is inadequate, please follow the below procedures to adjust the direction of
the air nozzles.
Loosen the 4 fixing bolts of the muffler case.
(Refer to the below safety notes)
Remove the 4 bolts.
Adjust the direction of the air nozzles by rotating the
muffler case matching the positions of the bolts’ holes.
Re-tight firmly the bolts.
Muffler
case
Never loosen the (6) bolts.
Air nozzles adjustment
5
Pull-stud bolts installation
6
Always respect the recommended torque when clamping the pull-stud bolts. In particular for
BBT30, exceeding the recommended values will easily bulge the taper, due to the thickness of
the small part of the taper. Since, when the Air Turbine Spindle is used, the spindle of the
machine does not rotate, the clamping torque of the pull-stud bolts is a little lower than normal.
Follow the below procedures to install the pull-stud bolts.
Check if the machine and the pull-stud bolts are compatible.
Clean the installation holes of the taper and remove the grease of the pull-stud bolts.
Apply an anti-loosening solution. (Refer to the operation manual of the anti-loosening manufacturer
for details regarding the application method.)
Always use the torque wrench (available on the market) and clamp following the below
recommended torque.