Group
"A" Shapes with 1/4" Mandrels

| Shape No. |
Wheel Diameter |
Wheel Thickness |
MAX RPM 1/2"
Overhang |
MAX RPM 1"
Overhang |
MAX RPM 1-1/2"
Overhang |
|
| A1 |
3/4 |
2-1/2 |
19,800 |
16,500 |
13,120 |
| A3 |
1 |
2-3/4 |
16,100 |
13,080 |
10,730 |
| A4 |
1-1/4 |
1-1/4 |
30,560 |
24,750 |
20,250 |
| A5 |
3/4 |
1-1/8 |
45,000 |
33,750 |
27,000 |
| A11 |
7/8 |
2 |
19,860 |
15,100 |
12,000 |
| A12 |
11/16 |
1-1/4 |
48,000 |
35,250 |
27,370 |
| A13 |
1-1/8 |
1-1/8 |
33,950 |
32,250 |
25,500 |
| A14 |
11/16 |
7/8 |
55,560 |
40,500 |
30,750 |
| A15 |
1/4 |
1-1/16 |
72,750 |
47,620 |
34,500 |
| A21 |
1 |
1 |
34,500 |
26,250 |
21,000 |
| A23 |
3/4 |
1 |
39,370 |
30,370 |
24,370 |
| A24 |
1/4 |
3/4 |
76,500 |
49,500 |
36,370 |
| A25 |
1 |
1 |
35,620 |
27,370 |
22,120 |
| A26 |
5/8 |
5/8 |
61,120 |
46,500 |
35,250 |
| A34 |
1-1/2 |
3/8 |
25,470 |
25,470 |
25,470 |
| A35 |
1 |
3/8 |
38,200 |
38,200 |
31,500 |
| A36 |
1-5/8 |
3/8 |
23,520 |
23,520 |
23,520 |
| A37 |
1-1/4 |
1/4 |
30,560 |
30,560 |
30,560 |
| Additional sizes
are available |
|