Description
Equip milling machines with standard drill chucks for expanded versatility. The Magnum AR8JT3 allows R-8 collet spindles to drive JT3 tooling directly.
Features
- Taper Adaptation – Converts an R-8 milling quill to a Jacobs Taper 3 mount.
- Solid Construction – Maintains alignment during drilling on a mill.
Specifications
- Machine Mount: R-8
- Chuck Mount: Jacobs Taper 3 (JT3)
- Supplier Part Number: 290-0803
- KMS Product Code: MAG-AR8JT3
Common Shop Applications
- Using drill bits in R-8 quill milling machines.
- Adapting mill/drill machines to accept standard chucks.
Includes / Compatibility
- Compatible with MAG-DPC58 and MAG-DPKC58 Drill Press Chucks.
- Compatible with King Canada KC-20VS and KC-PDM30 Mill/Drills.
Recommended Shop Add-Ons
- Pair this adapter with a Jacobs Taper 3 Drill Chuck.
- Hold your work securely with a Milling Vise.
Frequently Asked Questions
Q: Does this secure with a drawbar? A: Yes, the R-8 shank requires a standard drawbar to secure the adapter into the milling machine quill.
Q: Can I use this for lateral milling? A: No, drill chucks and JT tapers are designed for axial loads (drilling) only, not the lateral forces generated by end mills.








