Machinery's Handbook, 31st Edition
GRINDING WHEELS
1291
Table 2. Standard Shapes of Grinding Wheel Faces ANSI B74.2-2003
1 8
1 8
T R
65°
45°
60°
60°
90°
60°
A
C (ISO)
B (ISO)
D
E
T
(ISO)
3T 10
R =
(ISO)
X
1 8
1 8
R
R
R
R
R
60°
65°
65° 80°
80° 60°
T X
T
F
H
G
I
J
T
T
(ISO) R = T 2
R = T 8
R = T 8
T 8
7T 10
R =
R =
X = T 3
1 8
R
X
V
23°
23°
90°
30°
45°
45°
T
T
L
M
I
J
K
(ISO)
‘X’ is the narrower wheel face (ISO)
(ISO)
R = T
Recommendations, similar in principle, yet somewhat less discriminating have been developed by the Norton Company for constructional steels. These materials can be ground either in their original state (soft) or in their after-hardened state (directly or following carburization). Constructional steels must be distinguished from structural steels which are used primarily by the building industry in mill shapes, without or with a minimum of machining. Constructional steels are either plain carbon or alloy type steels assigned in the AISI-SAE specifications to different groups, according to the predominant types of alloying elements. In the following recommendations no distinction is made because of different compositions since that factor generally, has a minor effect on grinding wheel choice in constructional steels. However, separate recommendations are made for soft (Table 5) and hardened (Table 6) constructional steels. For the relatively rare instance
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