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Lapidary Blade Speed Recommendations



Blade BD-301 BD-303 Series
Recommended RPM
Operating Range
in Surface Feet Per Minute
3000 - 4500 4500 - 6000
Blade Diameter Approximate Arbor Shaft
RPM Range
4" (102mm) 2860 - 4300 4300 - 5730
5" (127mm) 2290 - 3440 3440 - 4580
6" (152mm) 1910 - 2870 2870 - 3820
7" (178mm) 1640 - 2460 2460 - 3270
8" (203mm) 1430 - 2150 2150 - 2870
9" (229mm) 1270 - 1910 1910 - 2550
10" (254mm) 1150 - 1720 1720 - 2290
12" (305mm) 960 - 1430 1430 - 1910
14" (356mm) 820 - 1230 1230 - 1640
16" (406mm) 720 - 1070 1070 - 1430
18" (457mm) 640 - 960 960 - 1270
20" (508mm) 570 - 860 860 - 1150
24" (610mm) 480 - 720 720 - 960
30" (762mm) 380 - 570 570 - 760
36" (914mm) 320 - 480 480 - 640