Questions and Answers
• Is it possible to drill using the CoolSpeed mini?
Yes, the CoolSpeed mini may perform drilling application on various materials. The friction clamping between the turbine and
tool shank is strong enough to overcome to axial forces during drilling.
• What is the maximum drill size that may be used with the CoolSpeed mini?
For soft materials, we recommend drills up to 5 mm.
For hard materials, we recommend drills up to 3 mm.
The feed rate in drilling applications is extremely important, and should be optimized according to machine and tool
parameters.
• What will happen if the drill size is too big?
In case the drill size or the feed rate are too big, the CoolSpeed mini may be under-powered. As a result, the tool core will
penetrate inside the turbine, the tool rotation will stop and the tool cutting edge will brake.
• Is it possible to re-use the turbine or bearings when replacing the cutting tool?
Certainly not. If attempting to re-use turbines, the tolerance from tool shank OD to turbine ID will not be sufficient and the
CoolSpeed mini will not perform leading to tool break. If attempting to re-use the bearings, the CoolSpeed mini run-out will
not be sufficient leading to poor surface finish and tool break.
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