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MASTERDRIVE Coupling Flange: 4 in Outside Dia, 3 5/16 in Coupling Overall Lg, Inch - General Purpose Straight Jaw Coupling Hubs
MASTERDRIVEGeneral Purpose Straight Jaw Coupling Hubs

MASTERDRIVE Coupling Flange: 4 in Outside Dia, 3 5/16 in Coupling Overall Lg, Inch

The MASTERDRIVE Coupling Flange is a General Purpose Straight Jaw Coupling Hub with a 4 in outside diameter. This inch-type hub features a 3/4 in bore diameter and a 3 5/16 in coupling overall length (MPN 6J-3/4).

SKU 3G-OTH-157284

Also listed as: 6J34 · 6J 3 4 · 6J-3-4

Brand
MASTERDRIVE
Item
Coupling Flange: 4 in Outside Dia, 3 5/16 in Coupling Overall Lg, Inch
Category
General Purpose Straight Jaw Coupling Hubs
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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

MASTERDRIVE
Manufacturer Part Number
6J-3/4
Type
Inch
Bore Dia
3/4 in
Coupling Overall Lg
3 5/16 in

Technical Documents

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

Product Description

The MASTERDRIVE Coupling Flange is a General Purpose Straight Jaw Coupling Hub with a 4 in outside diameter. This inch-type hub features a 3/4 in bore diameter and a 3 5/16 in coupling overall length (MPN 6J-3/4).

Frequently Asked Questions

What is a MASTERDRIVE coupling flange used for?

A MASTERDRIVE coupling flange connects a motor shaft to driven equipment such as pumps or gearboxes. It transmits torque while compensating for minor misalignment. This general-purpose straight jaw coupling hub is common in industrial power transmission systems.

What are the specifications of the MASTERDRIVE 6J-3/4 coupling flange?

This MASTERDRIVE coupling flange has a 4 in outside diameter, 3 5/16 in overall coupling length, and a 3/4 in bore diameter. It is an inch-series general-purpose straight jaw coupling hub. The manufacturer part number is 6J-3/4.

Where to buy MASTERDRIVE coupling flanges worldwide?

3G Electric supplies MASTERDRIVE coupling flanges worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on the 6J-3/4 or other MASTERDRIVE components.

How to select the correct MASTERDRIVE coupling flange?

Select a MASTERDRIVE coupling flange by matching the bore diameter to your shaft size, the outside diameter to the coupling housing, and the overall length to the space available. Verify the inch-series dimensions and torque requirements for your application. Consult the MASTERDRIVE catalog for fitment details.

Used in

Common applications for MASTERDRIVE
Pump drives — MASTERDRIVE finished bore close-coupled flanges (e.g., size 8, cast iron) for direct motor-to-pump shaft connections
Conveyor systems — MASTERDRIVE jaw coupling spiders (e.g., L099/100U) for light-duty power transmission between motor and gearbox
Compressor applications — MASTERDRIVE two-piece sleeve coupling inserts (e.g., 9N) for high-torque, moderate-speed compressor drives
Industrial fans — MASTERDRIVE QD bushed flanges (e.g., size 6, JA bushing) for quick installation on fan shafts
Mixer and agitator drives — MASTERDRIVE metric bore flanges (e.g., size 11, 52mm) for European-standard shaft connections
General power transmission — MASTERDRIVE coupling flanges in sizes 5-11 for connecting rotating equipment with parallel shafts

MASTERDRIVE Products

3G Electric supplies MASTERDRIVE general purpose straight jaw coupling hubs. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
MASTERDRIVE Coupling Flange: 4 in Outside Dia, 3 5/16 in Coupling Overall Lg, Inch, 5/8 in Bore Dia (MPN 6J-5/8)
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MASTERDRIVE Coupling Flange: 4 in Outside Dia, 3 5/16 in Coupling Overall Lg, Inch, 5/8 in Bore Dia (MPN 6J-5/8)
MASTERDRIVE Coupling Flange: 4 in Outside Dia, 3 5/16 in Coupling Overall Lg, Inch, 3/16 in Bore Dia (MPN 6J-1-3/16)
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MASTERDRIVE Coupling Flange: 4 in Outside Dia, 3 5/16 in Coupling Overall Lg, Inch, 3/16 in Bore Dia (MPN 6J-1-3/16)
MASTERDRIVE Coupling Flange: 4 in Outside Dia, 3 5/16 in Coupling Overall Lg, Inch (MPN 6J-1-3/8)
MASTERDRIVE
MASTERDRIVE Coupling Flange: 4 in Outside Dia, 3 5/16 in Coupling Overall Lg, Inch (MPN 6J-1-3/8)
MASTERDRIVE Coupling Flange: 4 in Outside Dia, 3 5/16 in Coupling Overall Lg, Inch, 7/8 in Bore Dia (MPN 6J-7/8)
MASTERDRIVE
MASTERDRIVE Coupling Flange: 4 in Outside Dia, 3 5/16 in Coupling Overall Lg, Inch, 7/8 in Bore Dia (MPN 6J-7/8)
MASTERDRIVE Coupling Flange: 4 in Outside Dia, 3 5/16 in Coupling Overall Lg, Inch (MPN 6J-1-1/8)
MASTERDRIVE
MASTERDRIVE Coupling Flange: 4 in Outside Dia, 3 5/16 in Coupling Overall Lg, Inch (MPN 6J-1-1/8)
MASTERDRIVE Coupling Flange: 4 in Outside Dia, 3 5/16 in Coupling Overall Lg, Inch (MPN 6J-15/16)
MASTERDRIVE
MASTERDRIVE Coupling Flange: 4 in Outside Dia, 3 5/16 in Coupling Overall Lg, Inch (MPN 6J-15/16)

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