60Â° inclined hole three-blade drill

When machining the motor spindle, we drilled 6 inclined holes with an angle of 60Â° with the axis of the shaft at the deep hole of one end of the spindle. The hole diameter is Ï†20ï½žÏ†30mm. We use the taper shank three-blade reaming drill bit produced by Chengdu Grating Factory to change it into a 60Â° inclined hole three-blade drill bit, which is used well in production (see picture).