A-A-50968
TABLE I. Sizes and capacities of type I chucks.
Size number |
Nominal capacity, inches |
Jacobs taper |
Chuck dimensions, inches |
|
Length with jaw closed not less than |
Diameter not less than |
|||
1 |
0-1/16 |
0 |
1-15/32 |
3/4 |
2 |
0-1/8 |
0 |
1-7/8 |
15/16 |
3 |
0-1/8 |
1 |
1-7/8 |
15/16 |
4 |
0-5/32 |
0 |
1-23/32 |
1 |
5 |
0-5/32 |
0 |
2-1/32 |
1-1/64 |
6 |
0-5/32 |
1 |
2-1/32 |
1-1/64 |
7 |
0-3/16 |
1 |
2-7/16 |
1-3/16 |
8 |
0-1/4 |
1 |
2-1/16 |
1-9/64 |
9 |
0-1/4 |
1 |
2-35/64 |
1-1/4 |
10 |
0-5/16 |
1 |
2-19/64 |
1-19/64 |
11 |
0-5/16 |
1 |
2-7/8 |
1-3/8 |
12 |
0-5/16 |
2 short |
2-23/64 |
1-31/64 |
13 |
0-5/16 |
2 short |
3-1/16 |
1-1/2 |
14 |
0-3/8 |
2 |
3-31/32 |
1-21/32 |
15 |
0-3/8 |
2 |
3-1/2 |
1-37/64 |
16 |
0-3/8 |
33 |
3-1/32 |
l-21/32 |
17 |
0-3/8 |
33 |
3-17/32 |
1-9/16 |
18 |
0-1/2 |
6 |
4-3/64 |
1-31/32 |
19 |
1/32-1/2 |
2 |
3-11/32 |
2-1/128 |
20 |
1/32-1/2 |
2 |
3-31/32 |
1-13/16 |
21 |
1/32-1/2 |
2 |
4-1/16 |
1-31/32 |
22 |
1/32-1/2 |
6 |
3-3/16 |
1-13/16 |
23 |
1/32-1/2 |
6 |
4-1/16 |
1-31/32 |
24 |
1/32-1/2 |
33 |
3-3/16 |
1-13/16 |
25 |
1/32-1/2 |
33 |
4-1/16 |
1-31/32 |
26 |
1/8-5/8 |
6 |
4-3/16 |
2-1/64 |
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