Jacobs Drill Chucks
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Check Price & Availability
Ball Bearing Super Chucks
The World's most accurate key type chuck.
Ideal for extra heavy-duty drilling applications.
Ball beraing construction permits grater tightening on twist drill shank.
Jaws center-ground for absolute straightness and alignment.
Jaws specially treated to ensure extended thread life and high gripping surface hardness.
One-piece sleeve eliminates crack between driving teeth often found in other designs.
Through-hardened sleeve teeth plus hardened nose and keyholes provide outstanding wear resistance.
Model |
Jacobs # |
Capacity |
Mount |
Key |
8-1/2N |
30209 |
0.0001" - 0.250" |
2JT |
K30 |
11N |
30215 |
0.0001" - 0.375" |
2JT |
K32 |
14N |
30221 |
0.0001" - 0.500" |
3JT |
K3 |
16N |
30227 |
0.125" - 0.625" |
3JT |
K4 |
18N |
30233 |
0.125" - 0.750" |
4JT |
K4 |
20N |
30239 |
0.375" - 1.000" |
5JT |
K5 |
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Plain Bearing Chucks
Heavy and Medium Duty models for threaded or taper mounting.
Jaws center-ground for absolute straightness and alignment.
Jaws specially treated to ensure extended thread life and high gripping surface hardness.
One-piece sleeve eliminates crack between driving teeth often found in other designs.
Through-hardened sleeve teeth plus hardened nose and keyholes provide outstanding wear resistance.
Heavy-Duty (Taper Mount)
Model |
Jacobs # |
Capacity |
Mount |
Key |
3A |
6223 |
0.125" - 0.625" |
3JT |
K3 |
3KD** |
6228 |
0.125" - 0.625" |
3JT |
K3 |
3PD*** |
6230 |
0.125" - 0.625" |
3JT |
K3 |
34-02 |
14442 |
0" - 0.500" |
2JT |
K3 |
34-06 |
6295 |
0" - 0.500" |
6JT |
K3 |
34-33 |
14445 |
0" - 0.500" |
33JT |
K3 |
34-33C* |
14451 |
0" - 0.500" |
33JT |
K3C |
36 |
6309 |
0.180" - 0.800" |
3JT |
K4 |
36KD** |
14865 |
0.180" - 0.800" |
3JT |
K4 |
36PD*** |
14866 |
0.180" - 0.800" |
3JT |
K4 |
| * |
Equipped with locking collar 1-1/16"-20 thread.
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Equipped with positive drive slot.
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Equipped with pin-type positive drive.
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Medium-Duty (Taper Mount)
Model |
Jacobs # |
Capacity |
Mount |
Key |
0 |
6200 |
0" - 0.156" |
0JT |
K0 |
1A |
6206 |
0" - 0.250" |
1JT |
K1 |
2A |
6214 |
0" - 0.375" |
2JT |
K2 |
31-01 |
14697 |
0" - 0.375" |
1JT |
K30 |
31-02 |
14698 |
0" - 0.375" |
2JT |
K30 |
33 |
6279 |
0.078" - 0.500" |
33JT |
K32 |
3326A |
6291 |
0.08" - 0.500" |
0.625 |
K32 |
33KD** |
6281 |
0.078" - 0.500" |
33JT |
K32 |
| ** |
Equipped with positive drive slot.
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Heavy-Duty (Threaded Mount)
Model |
Jacobs # |
Capacity |
Mount |
Key |
3B-45/64 |
? |
0.125" - 0.625" |
45/64"-16 |
K3 |
3B-5/8 |
6232 |
0.125" - 0.625" |
5/8"-16 |
K3 |
7BA-3/8 |
6255 |
0" - 0.250" |
3/8"-24 |
K7 |
7BA-1/2 |
? |
0" - 0.250" |
1/2"-20 |
K7 |
32BA-1/2 |
8859 |
0" - 0.375" |
1/2"-20 |
K32 |
34B-5/8 |
? |
0" - 0.500" |
5/8"-16 |
K3 |
35B-1/2 |
14723 |
0.125" - 0.625" |
1/2"-20 |
K3 |
36B-5/8 |
6314 |
0.180" - 0.800" |
5/8"-16 |
K4 |
36B-3/4 |
14723 |
0.180" - 0.800" |
3/4"-16 |
K4 |
36B-45/64 |
? |
0.180" - 0.800" |
45/64"-16 |
K4 |
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Medium-Duty (Threaded Mount)
Model |
Jacobs # |
Capacity |
Mount |
Key |
0B-5/16" |
6204 |
0" - 0.156" |
5/16"-24 |
K0 |
1B-3/8" |
6208 |
0" - 0.250" |
3/8"-24 |
K1 |
2BA-3/8" |
6219 |
0" - 0.375" |
3/8"-24 |
K2 |
31BA-1/2" |
? |
0.063" - 0.375" |
1/2"-20 |
K30 |
31BA-3/8" |
? |
0.063" - 0.375" |
3/8"-24 |
K30 |
41BA-1/2" |
31090 |
0." - 0.375" |
1/2"-20 |
K30 |
41BA-3/8" |
30728 |
0." - 0.375" |
3/8"-24 |
K30 |
33BA-3/8" |
6283 |
0.078" - 0.500" |
3/8"-24 |
K32 |
33BA-1/2" |
6287 |
0.078" - 0.500" |
1/2"-20 |
K32 |
33BA-5/8" |
6289 |
0.078" - 0.500" |
5/8"-16 |
K32 |
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Related Links:
Drill Chuck Keys
Jacobs Taper Shank specs
All Drill Chucks for sale
Note:
The specifications and information provided on this page are intended for part identification purposes only.
Although we believe them to be correct, dimensions should not be used for part construction or inspection.
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