Machinery's Handbook, 31st Edition
890
Milling Cutters Amerian National Standard Relieved, Concave, Convex, and Corner-Rounding Arbor-Type Cutters ANSI/ASME B94.19-1997 (R2019)
R
C
W
C
W
W
H
H
H D
D
D
Concave
Convex
Corner-Rounding Diameter of Hole H
Diameter C or Radius R
Width W ± .010 b
Cutter Dia. D a
Nom.
Max.
Min.
Nom.
Max.
Min.
Concave Cutters c
0.1270 0.1895 0.2520 0.3145 0.3770 0.4395 0.5040 0.6290 0.7540 0.8790 1.0040 0.1270 0.1895 0.2520 0.3145 0.3770 0.4395 0.5020 0.6270 0.7520 0.8770 1.0020 0.1260 0.2520 0.3770 0.5020 0.6270
0.1240 0.1865 0.2490 0.3115 0.3740 0.4365 0.4980 0.6230 0.7480 0.8730 0.9980 0.1230 0.1855 0.2480 0.3105 0.3730 0.4355 0.4980 0.6230 0.7480 0.8730 0.9980 0.1240 0.2490 0.3740 0.4990 0.6240
1 1 1 1 1 1 1
1.00075 1.00075 1.00075 1.00075 1.00075 1.00075 1.00075
1.00000 1.00000 1.00000 1.00000 1.00000 1.00000 1.00000
2 1 ⁄ 4 2 1 ⁄ 4 2 1 ⁄ 2 2 3 ⁄ 4 2 3 ⁄ 4
1 ⁄ 4 3 ⁄ 8
1 ⁄ 8
3 ⁄ 16
1 ⁄ 4
7 ⁄ 16 9 ⁄ 16
5 ⁄ 16
3 ⁄ 8
5 ⁄ 8 3 ⁄ 4
3 3
7 ⁄ 16
1 ⁄ 2 5 ⁄ 8 3 ⁄ 4 7 ⁄ 8
13 ⁄ 16
1
1.251 1.251 1.251 1.251
1.250 1.250 1.250 1.250
3 1 ⁄ 2 3 3 ⁄ 4
1 1 ⁄ 4 1 1 ⁄ 4 1 1 ⁄ 4 1 1 ⁄ 4
1 3 ⁄ 16 1 3 ⁄ 8 1 9 ⁄ 16
4
1
4 1 ⁄ 4
Convex Cutters c
1 1 1 1 1 1 1
1.00075 1.00075 1.00075 1.00075 1.00075 1.00075 1.00075
1.00000 1.00000 1.00000 1.00000 1.00000 1.00000 1.00000
2 1 ⁄ 4 2 1 ⁄ 4 2 1 ⁄ 2 2 3 ⁄ 4 2 3 ⁄ 4
1 ⁄ 8
1 ⁄ 8
3 ⁄ 16
3 ⁄ 16
1 ⁄ 4
1 ⁄ 4
5 ⁄ 16
5 ⁄ 16
3 ⁄ 8
3 ⁄ 8
3 3
7 ⁄ 16
7 ⁄ 16
1 ⁄ 2 5 ⁄ 8 3 ⁄ 4 7 ⁄ 8
1 ⁄ 2 5 ⁄ 8 3 ⁄ 4 7 ⁄ 8
1.251 1.251 1.251 1.251
1.250 1.250 1.250 1.250
3 1 ⁄ 2 3 3 ⁄ 4
1 1 ⁄ 4 1 1 ⁄ 4 1 1 ⁄ 4 1 1 ⁄ 4
4
1
1
4 1 ⁄ 4
Corner-Rounding Cutters d
1 1
1.00075 1.00075
1.00000 1.00000
2 1 ⁄ 2
1 ⁄ 4
1 ⁄ 8 1 ⁄ 4 3 ⁄ 8 1 ⁄ 2 5 ⁄ 8
3
13 ⁄ 32
1.251 1.251 1.251
1.250 1.250 1.250
3 3 ⁄ 4 4 1 ⁄ 4 4 1 ⁄ 4
1 1 ⁄ 4 1 1 ⁄ 4 1 1 ⁄ 4
9 ⁄ 16
3 ⁄ 4
15 ⁄ 16
a Tolerances on cutter diameter are + 1 ⁄
16 , −
1 ⁄ 16 inch for all sizes.
b Tolerance does not apply to convex cutters. c Size of cutter is designated by specifying diameter C of circular form. d Size of cutter is designated by specifying radius R of circular form. All dimensions in inches. All cutters are high-speed steel and are form relieved. Right-hand corner rounding cutters are standard, but left-hand cutter for 1 ⁄ standard. For key and keyway dimensions for these cutters, see page 894 .
4 -inch size is also
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