Starting position and drilling depth
Using stop rings, you can define the following parameters:
-
Starting position of the drill bit
-
Drilling depth

Pos |
Part |
Function |
---|---|---|
1 |
Starting position ring |
Defines the starting position for drilling. This allows for quick positioning of the drill bit at the pre-defined safe distance to the surface. The starting position can be adjusted. |
2 |
Depth ring |
Defines the drilling depth. |
3 |
Depth valve |
Controls the drilling depth. Once the depth ring reaches the valve, it activates the valve, and the spindle retracts into the starting position. The motor automatically switches off after retract. |
4 |
Starting position valve |
Controls the starting position for drilling. Once the starting position ring reaches the valve, it activates the valve that switches off the motor. |
You can calculate the distance between the depth ring and the drill head (dimension L in the figure below) for the desired drill depth D according to the following formula:
L (mm) =D (mm) – 31.0 mm
L (in) = D (in) – 1.2 in
