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Diamond Core Bit Speed Guidelines
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| 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 |
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* Based upon the Optimum Performance Speed
calibrated in Surface feet per Minute (SFM). |
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