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JACOBS Drill Chuck Arbor: R8 to JT6 (MPN 7342DN) - Bridgeport-Taper to Jacobs-Taper Arbors
JACOBSBridgeport-Taper to Jacobs-Taper Arbors

JACOBS Drill Chuck Arbor: R8 to JT6 (MPN 7342DN)

The JACOBS Drill Chuck Arbor: R8 to JT6 (MPN 7342DN) is a Bridgeport-Taper to Jacobs-Taper Arbor. This product is manufactured by JACOBS and is identified by the manufacturer part number 7342DN.

SKU 3G-OTH-209115

Also listed as: 7342 DN · 7342-DN

Brand
JACOBS
Item
Drill Chuck Arbor: R8 to JT6
Category
Bridgeport-Taper to Jacobs-Taper Arbors
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Technical Specifications

JACOBS
Manufacturer Part Number
7342DN

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

Product Description

The JACOBS Drill Chuck Arbor: R8 to JT6 (MPN 7342DN) is a Bridgeport-Taper to Jacobs-Taper Arbor. This product is manufactured by JACOBS and is identified by the manufacturer part number 7342DN.

Frequently Asked Questions

What is the JACOBS Drill Chuck Arbor R8 to JT6 used for?

The JACOBS Drill Chuck Arbor R8 to JT6 (MPN 7342DN) adapts a Bridgeport-taper spindle to a Jacobs-taper drill chuck. It is used in milling machines and drill presses to securely mount a drill chuck for precision drilling operations in metalworking and machining applications.

What are the specifications of the JACOBS 7342DN arbor?

The JACOBS 7342DN arbor has an R8 (Bridgeport) shank on one end and a JT6 (Jacobs taper) on the other. It is manufactured by JACOBS under part number 7342DN. This arbor enables quick change of drill chucks on Bridgeport-type milling machines without removing the spindle.

Where to buy a JACOBS R8 to JT6 arbor worldwide?

3G Electric supplies the JACOBS 7342DN R8 to JT6 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 genuine JACOBS arbor.

How to install a JACOBS R8 to JT6 arbor on a mill?

To install the JACOBS 7342DN arbor, clean the R8 shank and spindle bore thoroughly. Insert the arbor into the Bridgeport spindle, align the keyway, and tighten the drawbar. Ensure the JT6 taper is clean before mounting the drill chuck. 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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