Posted on 2 Comments

The Speed of the Drill

For smaller sized holes, such as 1/2″ or smaller, the maximum suggested speed is 600 RPM.

Larger holes will need slower drilling speeds, for example:

400 RPM for 1 inch Holes
200 RPM for 2 inch Holes
125 RPM for 3 inch Holes

The idea is, as the speed increases, there is more and more friction on the rim of the drill bits and the coolant can not stay on the surface.

2 thoughts on “The Speed of the Drill

  1. I’m drilling a 4 1/2″ hole in ceramic tile with one of your hole saws. Looking at the above recommendations I’m thinking I should be running at about 60rpm or less
    Does that sound about right?

    Thanks in advance
    Dennis

    1. Hello Dennis,
      Thanks for the question.
      Based on our experience, you should be fine in the 80-100 RPM neighborhood.
      Water cooling is essential.
      Thank you
      DRILAX

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