Based on the material and the hole diameter you want to drill you must define the power and the free speed of your tool. The free speed is determined thanks to the cutting speed. Each material has a specific cutting speed (depends on its hardness).
Example: Suppose we need to make a hole in Aluminum up to 3 mm. Which model would you choose?
Answer: 6,000rpm & <300W
What happens if you use a too high drilling speed?
Heat is generated when the drill bit cuts the material due to friction. The extra heat made by high speed can harden the material which changes the material characteristics!
It means that :
- Drill bit gets blunt more quickly (should be replaced with new one)
- Longer process time (due to material hardening)
- Shorter drill motor lifetime (due to longer drilling time)
- Wrong speed can cause bad hole quality
