Blade RPM vs. Surface Feet Per Minute (SFPM)
When choosing a blade for your cutting conditions, follow the blade manufacturer’s recommendations. Match the blade speed (Blade Shaft RPM) to the recommended blade Surface Feet Per Minute (SFPM).
SFPM | 12” | 14” | 16” | 18” | 20” | 24” | 26” | 30” | 36” |
| diam. | diam. | diam. | diam. | diam. | diam. | diam. | diam. | diam. |
| RPM | RPM | RPM | RPM | RPM | RPM | RPM | RPM | RPM |
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8,000 | 2546 | 2183 | 1910 | 1698 | 1528 | 1273 | 1175 | 1019 | 849 |
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8,500 | 2706 | 2319 | 2029 | 1804 | 1623 | 1353 | 1249 | 1082 | 902 |
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9,000 | 2865 | 2456 | 2149 | 1910 | 1719 | 1432 | 1322 | 1146 | 955 |
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9,500 | 3024 | 2592 | 2268 | 2016 | 1814 | 1512 | 1396 | 1210 | 1008 |
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10,000 | 3183 | 2728 | 2387 | 2122 | 1910 | 1592 | 1469 | 1273 | 1061 |
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10,500 | 3342 | 2865 | 2507 | 2228 | 2005 | 1671 | 1543 | 1337 | 1114 |
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11,000 | 3501 | 3001 | 2626 | 2334 | 2101 | 1751 | 1616 | 1401 | 1167 |
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11,500 | 3661 | 3138 | 2745 | 2440 | 2196 | 1830 | 1690 | 1464 | 1220 |
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12,000 | 3820 | 3274 | 2865 | 2546 | 2292 | 1910 | 1763 | 1528 | 1273 |
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12,500 | 3979 | 3410 | 2984 | 2653 | 2387 | 1989 | 1836 | 1592 | 1326 |
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13,000 | 4138 | 3548 | 3104 | 2759 | 2483 | 2069 | 1910 | 1655 | 1378 |
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13,500 | tbd |
| 3229 | 2866 | 2581 | 2149 | 1985 | 1719 | 1433 |
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14,000 | tbd |
| 3349 | 2972 | 2676 | 2229 | 2058 | 1783 | 1486 |
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14,500 | tbd |
| 3468 | 3078 | 2772 | 2308 | 2132 | 1847 | 1532 |
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CAUTION
§Verify that the engine start switch is OFF before installing blade.
§Tighten the 5/8”
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