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R8 Taper to Jacobs Taper Drill Chuck Arbors
Adapt machines with R8 taper spindles to mount Jacobs taper drill chucks. These arbors are made of hardened steel and are precision ground for accuracy. They thread onto your machine’s drawbar for a secure connection. Strike the top of the arbor to seat them onto a drill chuck. To separate them, use a drill chuck removal tool.
Economy arbors are great for occasional or low-volume jobs.
Standard arbors are harder and more wear resistant than Economy arbors.
| For Drill Chuck Jacobs Taper Number | Overall Lg. | Material | Hardness | For Use With | Each | |
Economy | ||||||
|---|---|---|---|---|---|---|
| 1 | 4 13/16" | Hardened Steel | Rockwell C28 (Hard) | Drill Presses, Milling Machines | 8775A16 | 000000 |
| 2, 2S | 5 3/64" | Hardened Steel | Rockwell C28 (Hard) | Drill Presses, Milling Machines | 8775A17 | 00000 |
| 3 | 5 25/64" | Hardened Steel | Rockwell C28 (Hard) | Drill Presses, Milling Machines | 8775A21 | 00000 |
| 4 | 5 27/32" | Hardened Steel | Rockwell C28 (Hard) | Drill Presses, Milling Machines | 8775A22 | 00000 |
| 6 | 5 25/64" | Hardened Steel | Rockwell C28 (Hard) | Drill Presses, Milling Machines | 8775A19 | 00000 |
| 33 | 5 13/64" | Hardened Steel | Rockwell C28 (Hard) | Drill Presses, Milling Machines | 8775A18 | 00000 |
Standard | ||||||
| 1 | 4 53/64" | Hardened Steel | Rockwell C55 (Very Hard) | Drill Presses, Milling Machines | 8775A11 | 00000 |
| 2, 2S | 5 5/64" | Hardened Steel | Rockwell C55 (Very Hard) | Drill Presses, Milling Machines | 8775A12 | 00000 |
| 3 | 5 27/64" | Hardened Steel | Rockwell C55 (Very Hard) | Drill Presses, Milling Machines | 8775A13 | 00000 |
| 6 | 5 15/64" | Hardened Steel | Rockwell C55 (Very Hard) | Drill Presses, Milling Machines | 8775A14 | 00000 |
| 33 | 5 15/64" | Hardened Steel | Rockwell C55 (Very Hard) | Drill Presses, Milling Machines | 8775A15 | 00000 |