Taper-Mount Keyless Drill Chucks
Swap out bits quickly on drill presses, milling machines, and lathes. These keyless chucks require only a twist of their sleeve to grip and release bits. They’re a great choice for low-torque, high-speed drilling. Their grip tightens as torque increases for a reliable hold on your bit. Mount them to your machine with a Jacobs taper arbor.
To maximize grip and minimize runout, choose a chuck where your drill bit diameter falls in the middle of the bit shank size range.
Premium chucks stay accurate when drilling in hard materials, such as steel. They're 2-4 times more accurate than other keyless chucks and grip bits more tightly.
Jacobs chucks are the most widely used drill chucks.


For Bit Shank Size | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jacobs Taper Number | Inch | mm | Max. No-Load Speed, rpm | TIR (Total Indicated Runout) Accuracy | Jaw Material | Body Material | For Use With | For Tool Drive Direction | Certification | Manufacturer Model Number | Each | |
Premium—Jacobs | ||||||||||||
| 2S | 1/64"-5/16" | 0.3-8 | 15,000 | 0.0016" | Steel | Steel | CNC Machines, Drill Presses, Lathes, Milling Machines | Clockwise | Accuracy Certificate | JKP 80-J2S | 2844A51 | 0000000 |

























