These drilling machines have many advantages over conventional belt drive drilling machines.
First the speed is via 6 speed gear box control allowing a low speed of 80 rpm ideal for large diameter drills.
To change the speed is very fast. You do need to change the belts etc...
The head can tilt +and- 45 degrees angle, can move up and down and rotates.
They are heavy duty as well starting weight of 500kgs. This gives rigidity and stability.
The machines can take collet chucks as well fro precision drilling.