ASSORTS R8 7/16 Inch to JT-3 Taper ARBOR Adapter Sleeve for Precision Tooling and Machining

• R8 to JT-3 Precision Adapter:
This arbor adapter is specifically designed for milling machines equipped with an R8 spindle, such as Bridgeport and similar vertical mills. It enables your machine to seamlessly connect with drill chucks that feature a JT-3 (Jacobs Taper 3) bore.

• 7/16" × 20 UNF Drawbar Thread:
The rear end includes a standard 7/16" × 20 UNF drawbar thread, which perfectly matches most R8 spindle drawbars. This ensures the arbor locks securely inside the spindle, eliminating the risk of tool slippage during operation.

• Minimum Run-Out & Maximum Accuracy:
The arbor is precision-ground to tight tolerances, helping minimize vibration and run-out. Its ground finish ensures a perfect fit between the spindle and drill chuck, delivering accurate drilling and improved surface finish.

• Industrial-Strength Alloy Steel:
Manufactured from high-quality alloy steel, this adapter is built to withstand demanding machining environments while maintaining long-term durability and dimensional accuracy.

• Versatile Tooling Solution:
Whether used for metalworking or precision woodworking, this adapter provides a reliable interface for mounting JT-3 drill chucks and compatible accessories, making it an essential tool for professional machinists and engineering workshops.

• Easy Integration:
The snug-fit taper design eliminates play, allowing for quick installation and stable tool setup, helping improve workshop efficiency and productivity.

Dispatch Time: 1–2 business days
International Delivery: 5–12 business days (location-wise)
Tracking: End-to-end international tracking available
Packaging: Shockproof & secure export packaging
Customs/Duties: May apply based on destination country
Carrier: DHL / FedEx / UPS (depending on region)

Warranty: 6–12 months (manufacturing defects only)
Returns: Accepted for defective, damaged, or incorrect items
Return Window: 7 days from delivery
Replacement: Free replacement for eligible claims
Process: Email support with product video/photos
Note: Used/damaged by customer items not returnable

Read the user manual before first use

Wear safety gloves & eye protection when required

Keep away from children

Do not overload or misuse the product

Store in a dry, moisture-free environment

Clean tools after use to maintain performance