Main components and functions

Pos	Component	Function
1	Spindle	Main rotating part of the drill.
2	Spindle guard	Protects the operator from the rotating spindle. Provides the drill bit with coolant.
3	Head	Transfers rotational torque and feed from the motor to the spindle.
4	Feed cassette	Defines spindle feed rate. Measured in inches per revolution (IPR) or millimeters per revolution (mm/rev).
5	Air logic	Operates the drill.
6	Split gear	Defines rotational speed. Measured in revolutions per minute (RPM).
7	Motor housing (motor with gear reduction)	Supplies power and rotation to the spindle. Defines PRM range.
8	Motor valve	Supplies airflow to the turbine motor.
9	Counter	Counts number of drilled holes (optional).
10	Start button	Starts the motor and activates the drill feed and rotation mechanism. The motor continues to run after the button is released. When the spindle reaches the pre-defined drilling depth, it returns automatically to the starting position and the motor switches off.
11	Retract button	Returns the spindle to the starting position at any time during the drilling cycle. The motor switches off automatically after retract.
12	Release button	Releases the concentric collet foot or the indexer (air-powered front part). Applicable only if the front part is installed.
13	Pause button	Stops the drill momentarily. The drill cycle continues after pressing the start button. The pause button is also used when setting up the drill and the drill depth.
14	Emergency stop button	Switches off air supply to the motor and stops the spindle at any time during drilling cycle. Once pressed, the emergency stop button locks in position. Disconnects the drill from the air supply before you manually resets the emergency stop button. Connects the drill to the air supply and restarts the drill.