(1 x 4.5KW ATC Air cooled spindle motor ( BT30,24000rpm,4 bearings,800Hz, 380V). 1 x BT30-ER25 Tool Holder with 45° pull stud. BT30-ER25 tool holder with 45° pull stud. 3)The atc spindle uses air cooling to cool the motor and front and rear bearings.
eBay