3m long shaft drill center hole
When processing the long 3267mm drive shaft, our factory uses φ100mm and 203kg round steel turning. Due to the irregular outer circle of the shaft material during machining, the center drill is broken and the yield is very low. To this end, we designed a center hole drilling tool for the long axis drilling center hole (see figure), changing the original workpiece rotation to the center drill rotation, centered by the center drill. Drill motor P=250W, n=1360r/min, motor