Bit Speed Guidelines
Diamond Core Bit Speed Guidelines
Wet Bit Diameter
Max/Min RPM*
1" - 2"
(25mm - 51mm)
1,200 - 1,000
2-1/4 " - 5"
(57mm - 127mm)
1,000 - 500
5-1/4" - 12"
(134mm - 305mm)
500 - 250
Dry Bit Diameter
Max/Min RPM*
1" - 1-1/2"
(25mm - 38mm)
6000 - 2300
1-3/4"
(44mm)
5000 - 1600
2" - 2-1/4"
(51mm - 57mm)
5000 - 1200
2-1/2"
(64mm)
5000 - 800
3" - 5"
(76mm - 127mm)
5000 - 700
6"
(152mm)
5000 - 600
* Based upon the Optimum Performance Speed
calibrated in Surface feet per Minute (SFM).
http://www.specializedgranite.com/staticpages/index.php/bit_speed_guide