How to choose a Pneumatic Drill
How to choose a pneumatic drill
In order to get the best out of the pneumatic drill there are a few important conditions which help to suit the pneumatic drill to the work type:
- Drill Diameter
- The speed of the pneumatic drill
- Stall Torque
These elements are depending on each other in every drilling application.
For instance, when drilling in Aluminum which is 5-8mm/0.197"-0.3152" thick with a small drill diameter (4mm/0.1576") the recommended speed is about 5000RPM; While drilling the same piece of Aluminum with a medium drill diameter (8mm/0.3152") the recommended speed is about 3000RPM; Drilling with a large drill diameter (10mm/0.394") in the same material will recommend the speed of about 2000RPM.
On the other hand, drilling in Titanium with a small drill diameter the recommended speed is about 1000RPM.
Note, usually, in the aerospace industry the drilling speed is dictated by the manufacturer (Airbus, Boeing, etc...), which is given in the P.S (Process Standard).
Stall torque is important to make sure the drill will not get jammed while drilling, and that depends on the material thickness.
Drilling a material in the wrong speed or drill diameter will cause the drill to overhaul and will damage the material and the drills' performance.
Every drill should be suited to the material that we are drilling and to the speed and drill diameter.
The size of the drills is important to choose the chuck. There are several size choices which indicate the size of the drill which we are using. There is also a choice between a regular chuck with a key to an automatic chuck.
Another important issue with the pneumatic drill shape, it has to be chosen dependence to the application that we are working on, choosing between a pistol grip drill, straight drill or an angle drill could change the productivity end to end.