Machinery's Handbook, 31st Edition
GRINDING WHEELS
1287
Table 1a. Standard Shapes and Inch Size Ranges of Grinding Wheels ANSI B74.2-2003 Table 1a. (Continued) Standard Shapes and Inch Size Ranges of Grinding Wheels
Size Ranges of Principal Dimensions, Inches
Applications
D = Dia.
T = Thick.
H = Hole
H
H
R
D
D
Type 18. Plug, Square End Type 18R. Plug, Round End R = D ⁄2
B T B T
J
H D
Type 19. Plugs, Conical End, Square Tip Type 19R. Plugs, Conical End, Round Tip (Tip Radius R = J ⁄2)
S B T
3 ∕ 8 -24UNF-2B to 5 ∕ 8 -11UNC-2B
SNAGGING Portable machine, threaded holes
1 1 ∕ 4 to 3
2 to 3 1 ∕ 2
D A K
N
Type 20. Wheel, Relieved One Side Peripheral grinding wheel, one side flat, the other side relieved to a flat.
T
H E
CYLINDRICAL GRINDING Between centers
5 to 20
12 to 36
3 ∕ 4 to 4
D K H O E K D K
A N
Type 21. Wheel, Relieved Two Sides Both sides relieved to a flat.
T
A
N
Type 22. Wheel, Relieved One Side, Recessed Other Side One side relieved to a flat.
F P H E
T
D
P
A
E F N
Type 23. Wheel, Relieved and Recessed Same Side The other side is straight.
T
H
CYLINDRICAL GRINDING Between centers, with wheel periphery
20 to 36
2 to 4
12 or 20
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