EXW Singapore — collect or forward from our Singapore office.

3G Electric
JACOBS Bridgeport-Taper to Jacobs-Taper Arbor, R8 to JT2 - Bridgeport-Taper to Jacobs-Taper Arbors
JACOBSBridgeport-Taper to Jacobs-Taper Arbors

JACOBS Bridgeport-Taper to Jacobs-Taper Arbor, R8 to JT2

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
Bridgeport-Taper to Jacobs-Taper Arbor, R8 to JT2
Part Number
7339N
Category
Bridgeport-Taper to Jacobs-Taper Arbors
Available to Order
Also known as:7339NJACOBS
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
EXW Singapore
Collect or forward from our office
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

JACOBS
Manufacturer Part Number
7339N

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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
Metalworking job shops — JACOBS MT3 to MT3 Morse taper extension (30450DN) for extending reach when drilling deep holes on a milling machine.
Automotive engine rebuilding — JACOBS MT2 to MT2 Morse taper extension (30446N) used in a drill press to adapt short tooling for cylinder head work.
Aerospace component manufacturing — JACOBS MT4 to MT5 Morse taper extension socket (30455DN) to adapt MT4 tooling to an MT5 spindle on a large machining center.
General maintenance and repair — JACOBS MT3 to MT2 Morse taper extension (30447DN) for adapting MT2 shank tools to an MT3 spindle in a maintenance workshop.
Tool rooms and die maintenance — JACOBS MT5 to MT4 Morse taper extension (30454N) to reduce from MT5 spindle to MT4 tooling for precision reaming operations.
Heavy equipment repair — JACOBS MT3 to MT4 Morse taper extension (30452N) used in a radial arm drill to adapt MT3 tools to an MT4 spindle for large hole drilling.
Not sure this is the right part? Photo-identify it→

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Compatible alternatives & equivalents

More from JACOBS

View all JACOBS parts →
JACOBS
JACOBS
This arbor adapts a Bridgeport-taper spindle (R8) to a Jacobs-taper (JT33) drill chuck. It is used in milling machines and drill presses to mount a Jacobs-taper chuck for drilling operations in metalworking

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first