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JACOBS Drill Chuck Arbor: R8 to JT2 (MPN 7339N) - Bridgeport-Taper to Jacobs-Taper Arbors
JACOBSBridgeport-Taper to Jacobs-Taper Arbors

JACOBS Drill Chuck Arbor: R8 to JT2 (MPN 7339N)

The JACOBS Drill Chuck Arbor (MPN 7339N) is a Bridgeport-Taper to Jacobs-Taper Arbor designed to adapt an R8 spindle to a JT2 chuck mount. This arbor, manufactured by JACOBS, enables secure attachment of a…

SKU 3G-OTH-209109

Also listed as: 7339 N · 7339-N

Brand
JACOBS
Item
Drill Chuck Arbor: R8 to JT2
Category
Bridgeport-Taper to Jacobs-Taper Arbors
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

JACOBS
Manufacturer Part Number
7339N

Technical Documents

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JACOBS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The JACOBS Drill Chuck Arbor (MPN 7339N) is a Bridgeport-Taper to Jacobs-Taper Arbor designed to adapt an R8 spindle to a JT2 chuck mount. This arbor, manufactured by JACOBS, enables secure attachment of a Jacobs-taper drill chuck to a machine tool with an R8 taper spindle.

Frequently Asked Questions

What is the JACOBS Drill Chuck Arbor 7339N used for?

The JACOBS 7339N arbor adapts an R8 spindle to a JT2 chuck mount, enabling secure attachment of a Jacobs-taper drill chuck on Bridgeport-type milling machines. It is essential for precision drilling in machining, toolmaking, and metalworking operations.

What are the specifications of the JACOBS 7339N arbor?

The JACOBS 7339N arbor has an R8 shank and a JT2 (Jacobs Taper 2) mount. It is manufactured by JACOBS under MPN 7339N. This arbor is designed for use with Bridgeport-taper spindles and Jacobs-taper drill chucks.

Where to buy the JACOBS 7339N arbor worldwide?

3G Electric supplies the JACOBS 7339N arbor worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this precision arbor.

How to install the JACOBS 7339N arbor on a milling machine?

Clean the R8 spindle bore and the arbor shank thoroughly. Insert the arbor into the spindle, align the drive key, and tighten the drawbar to secure it. Then mount your Jacobs-taper drill chuck onto the JT2 end. Always follow the machine manufacturer's torque specifications.

Used in

Common applications for JACOBS
General machining – JACOBS keyed drill chucks (e.g., MPN JCM6214, JT2 mount) for manual drill presses and milling machines.
Production drilling – JACOBS high-precision keyless chucks (e.g., MPN 31415, MT4) for automated CNC drilling centers.
Corrosive environment toolholding – JACOBS stainless steel chucks (e.g., MPN JCM6624Z) for food processing or chemical plant maintenance.
Spindle adaptation – JACOBS Morse taper sleeves (e.g., MPN 30427DN) for retrofitting older machine tools with modern chucks.
Portable drilling – JACOBS thread-mount chucks (e.g., MPN JCM6204, 5/16-24) for hand-held electric drills and magnetic base drills.

JACOBS Products

3G Electric supplies JACOBS bridgeport-taper to jacobs-taper arbors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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