ASSORTS Tool Steel Drill Chuck Arbor - R8 Shank Drawbar Style with JT2 Mounting Taper for Drill, Mill, Lathe Tools

• Precision R8 to JT2 Adapter: This drill chuck arbor is specially designed for milling machines with an R8 spindle, such as Bridgeport-style mills. It provides a seamless connection between the machine spindle and drill chucks with a JT2 (Jacobs Taper 2) mount.
• 7/16" × 20 UNF Drawbar Thread: The arbor features a standard 7/16" × 20 UNF internal drawbar thread, allowing it to securely lock into the machine spindle. This ensures reduced vibration and prevents tool slippage during operation.
• Hardened & Precision Ground Construction: Manufactured from high-quality alloy tool steel, the arbor is hardened and precision-ground to ensure perfect metal-to-metal spindle contact and accurate alignment.
• Minimal Runout Performance: Thanks to its precision-ground finish and tight manufacturing tolerances, the arbor provides near-zero runout (wobble). This results in more accurate drilling and improved hole quality.
• Versatile Workshop Utility: Compatible with all machines supporting R8 tooling, including milling machines and specialized lathe setups, making it an essential tool for both professional machinists and hobbyists.
• Durable Industrial Build: Designed for heavy-duty machining environments, this arbor maintains its dimensional stability and performance over long-term use, making it a reliable addition to any workshop.