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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”
diam.
RPM
14”
diam.
RPM
16”
diam.
RPM
18”
diam.
RPM
20”
diam.
RPM
24”
diam.
RPM
26”
diam.
RPM
30”
diam.
RPM
36”
diam.
RPM
8,000 2546 2183 1910 1698 1528 1273 1175 1019 849
8,500 2706 2319 2029 1804 1623 1353 1249 1082 902
9,000 2865 2456 2149 1910 1719 1432 1322 1146 955
9,500 3024 2592 2268 2016 1814 1512 1396 1210 1008
10,000 3183 2728 2387 2122 1910 1592 1469 1273 1061
10,500 3342 2865 2507 2228 2005 1671 1543 1337 1114
11,000 3501 3001 2626 2334 2101 1751 1616 1401 1167
11,500 3661 3138 2745 2440 2196 1830 1690 1464 1220
12,000 3820 3274 2865 2546 2292 1910 1763 1528 1273
12,500 3979 3410 2984 2653 2387 1989 1836 1592 1326
13,000 4138 3548 3104 2759 2483 2069 1910 1655 1378
13,500 tbd 3229 2866 2581 2149 1985 1719 1433
14,000 tbd 3349 2972 2676 2229 2058 1783 1486
14,500 tbd 3468 3078 2772 2308 2132 1847 1532
CAUTION
§ Verify that the engine start switch is OFF before installing blade.
§ Tighten the 5/8” blade-mounting bolt to
125-175 foot-pounds torque.