A bellows drill press consists of the same parts as a normal drill press. A drill press, instead of being free motion drill like a hand drill, it is fixed in place. Normally they are mounted on a stand or bolted to the floor or workbench. As with any high powered tool there are pros and cons to using this type of machinery.
The parts that make up this machine in where the bellows drill press differs from a normal drill press. Both types of presses have a column, which supports everything, a table upon which the spindle sits, and a drill head. The difference is in how the drill head is powered. In a normal drill press the drill head is driven by an induction motor. In the case of a bellows drill press in place of the motor there is a metal bellows. Air is forced, via a motor, into the bellows and then released at the desired level of power. The force and power of the air released is determined, not unlike a normal drill press, by the two, sometimes three, control levers on the side of the machine.
As with any high-powered machinery, there are pros and cons. Some of the pros for using this machine are the fact that there's less effort involved, the angle of the spindle allows for accurate drilling, and a vise or clamp can be used to restrain the work.
When using the bellows drill press for sanding, polishing, or honing one must be careful because the chuck arbor, holding the different heads, is suspended only by the friction in the spindle. With the larger heads it is possible for the chuck arbor to fall out.
Please be properly trained before using a bellows drill press or any high powered machinery.
