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High Hardness Cone Carbide Burr Long Shank Die Grinder Bits OEM Service
Size No. | Burr size | RPM |
No.42 | 2.4mm | 17,000-26,000 |
No.43 | 3.0mm | 17,000-26,000 |
No.1 | 6.0mm | 11,000-16,500 |
No.5 | 13.0mm | 8,000-12,000 |
No.6 | 16mm | 7,650-11,500 |
Speed
The rotary tool speed you use will depend on the metal and
size/type of burr used. For optimum performance and results it is
always best to check the manufacturer recommendations for the
correct RPM to use with each metal burr. Ideally you will start off
at a lower speed and increase as you go along, however if you find
your burr is chipping it is a sign you are going too slow. Here is
a general rotary tool speed guide
Technique
For the best results, and to make your burr last longer, make sure
you don't use too much pressure while cutting. Too much pressure
will cause the cutting edges of the flutes to chip and become
smooth prematurely, reducing the life of your burr .
You will also want to ensure you keep the burr moving around the cutting area as much as possible. If the metal burr is left still for too long this can cause clogging and stop it from digging and jabbing into the job, leaving a rough job with visible marks.