Machinery's Handbook, 31st Edition
1288
GRINDING WHEELS 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
D
P
A
F N
Type 24. Wheel, Relieved and Recessed One Side, Recessed Other Side One side recessed, the other side is relieved to a recess.
T
E
G H P
D
P
A
N
F
Type 25. Wheel, Relieved and Recessed One Side, Relieved Other Side One side relieved to a flat, the other side relieved to a recess.
T
E O
H
K
D
E GO N F H P P
A
T
Type 26. Wheel, Relieved and Recessed Both Sides
CYLINDRICAL GRINDING Between centers, with the periphery of the wheel
20 to 36
2 to 4
12 or 20
D
TYPES 27 & 27A. Wheel, Depressed Center 27. Portable Grinding: Grinding normally done by contact with work at approx. a 15 ° angle with face of the wheel. 27A. Cutting-off: Using the periphery as grinding face.
U
27
K
27 A
H
E
U = E
O
Y
CUTTING OFF Reinforced organic bonds only
16 to 30
U = E = 5 ∕ 32 to 1 ∕ 4
1 or 1 1 ∕ 2
SNAGGING
U = Uniform thick. 1 ∕ 8 to 3 ∕ 8
3 to 9
3 ∕ 8 or 7 ∕ 8
Portable machine
K D
Type 28. Wheel, Depressed Center (Saucer-Shaped Grinding Face) Grinding at approx. 15 ° angle with wheel face.
U
H U = E O Y E P
V 1
SNAGGING
U = Uniform thickness 1 ∕ 4
7 or 9
7 ∕ 8
Portable machine
Throughout table large open-head arrows indicate grinding surfaces.
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