Blade Diameter Rec. RPM Max. RPM
4" 9,000 15,200
4-1/2" 8,000 13,500
5" 7,200 12,200
6" 6,500 11,090
7" 5,100 8,730
8" 4,500 7,640
9" 4,000 6,700
10" 3,600 6,115
12" 3,000 5,095
12" High Speed N/A 6,300
14" 2,500 4,364
14" High Speed N/A 5,460
16" 2,200 3,800
16" High Speed N/A 4,724
18" 2,000 3,300
20" 1,800 3,000
24" 1,500 2,550