Genesee Blade Grinding Angles for Radial Hollow Mills
Styles
Blade Size
A
B
C
D
E
T
F
H
J
A L V G
170 x 1/2 x 2
70°
20°
19° - 45'
31/64
30°
20°
230 x 5/8 x 2 1/2
70°
20°
19°- 45'
39/64
20°
20°
280 x 3/4 x 2 5/8
70°
20°
19°- 45'
39/64
20°
20°
350 x 7/8 x 2 7/8
70°
20°
19°- 45'
39/64
20°
20°
470 x 1 x 3 1/8
70°
20°
19°- 45'
13/16
20°
20°
L-00, L-00-D
L-0, L-0-D
L-2, L-2-D
110 x 11/32 x 1 1/4
70°
20°
19°- 45'
17/64
35°
20°
170 x 1/2 x 2
70°
20°
19°- 45'
31/64
30°
20°
230 x 1/2 x 2
70°
20°
19°- 45'
31/64
20°
20°
R-1,R-2
R-3, R-4
110 x 11/32 x 1 1/16
70°
20°
19°- 45'
7/32
35°
20°
170 x 1/2 x 1 13/16
70°
20°
19°- 45'
7/16
30°
20°
230 x 1/2 x 1 13/16
70°
20°
19°- 45'
7/16
20°
20°
T
170 x 1/2 x 2
70°
20°
19°- 45'
14°
15/32
23°
45°
16 1/2°
230 x 5/8 x 2
70°
20°
19°- 45'
14°
19/32
23°
45°
161/2°

K - Should be equal to depth of cut + 1/64" if possible
G - 25% of diameter to be cut - not to exceed 3/32"
F - May be increased up to 45° on small parts

Note:
1) Grind blades in sets and locate for grinding from bottom and back end
2) Style T blades must have 45 chamfer to cut properly