A-A-51139A
TABLE II. Type I and II, class 2, style B and class 3, style B tool holders.
|
Tool holder number |
Size range of square, rectangular and dia. Of cylindrical tool bits or boring bars, inches |
Thickness of shank, inches |
Height of shank, inches |
Overall length of holder, inches |
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|
Type I |
Type II |
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|
Class 2 style B |
Class 3 style B |
Class 2 style B |
Class 3 style B |
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|
A-L-40 |
A-R-50 |
B-L-40 |
B-R-50 |
1/8, 3/16, ¼, 5/16 |
3/8 |
7/8 |
5 ½ |
|
A-L-41 |
A-R-51 |
B-L-41 |
B-R-51 |
3/16, ¼, 5/16, 3/8 |
½ |
1 1/8 |
6 ½ |
|
A-L-42 |
A-R-52 |
B-L-42 |
B-R-52 |
¼, 5/16, 3/8, 7/16,1/2 |
5/8 |
1 ½ |
8 |
|
A-L-43 |
A-R-54 |
B-L-44 |
B-R-54 |
5/16, 3/8, 7/16, ½, 5/8 |
7/8 |
1 7/8 |
9 ½ |
|
A-L-46 |
A-R-56 |
B-L-46 |
B-R-56 |
½, 9/16, 5/8, 11/16, ¾, 7/8, 13/ |
1 1/4 |
2 1/4 |
13 |
NOTE: The tolerance for all dimensional data shall be manufacturer’s standard as specified on their parts drawings.
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