Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

MASTERDRIVE Coupling Flange: 8 Coupling Size, 4,500 RPM Max Speed, 5 29/64 in Outside Dia - Finished Bore Close-Coupled Flanges
MASTERDRIVEFinished Bore Close-Coupled Flanges

MASTERDRIVE Coupling Flange: 8 Coupling Size, 4,500 RPM Max Speed, 5 29/64 in Outside Dia

The MASTERDRIVE Coupling Flange: 8 Coupling Size is a Finished Bore Close-Coupled Flange from MASTERDRIVE, with a round keyed bore and metric sizing. This cast iron flange has a 5 29/64 in outside diameter and a…

SKU 3G-OTH-134609

Also listed as: 8S42MM · 8S 42MM

Brand
MASTERDRIVE
Item
Coupling Flange: 8 Coupling Size, 4,500 RPM Max Speed, 5 29/64 in Outside Dia
Category
Finished Bore Close-Coupled Flanges
Available to Order
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.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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
8S-42MM
Type
Cast Iron
Max Speed
4,500 RPM
Outside Dia
5 29/64 in

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

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

Product Description

The MASTERDRIVE Coupling Flange: 8 Coupling Size is a Finished Bore Close-Coupled Flange from MASTERDRIVE, with a round keyed bore and metric sizing. This cast iron flange has a 5 29/64 in outside diameter and a maximum speed of 4,500 RPM, identified by manufacturer part number 8S-42MM.

Frequently Asked Questions

What is a MASTERDRIVE coupling flange used for?

A MASTERDRIVE coupling flange connects a motor shaft to a driven component in industrial power transmission systems. It is commonly used in pumps, compressors, and conveyors where a rigid, close-coupled connection is required. The round keyed bore ensures positive torque transfer.

What are the specifications of the MASTERDRIVE 8S-42MM coupling flange?

The MASTERDRIVE 8S-42MM is a cast iron finished bore close-coupled flange with coupling size 8. It has a round keyed metric bore, a 5 29/64 in outside diameter, and a maximum speed of 4,500 RPM. The manufacturer part number is 8S-42MM.

Where to buy MASTERDRIVE coupling flanges worldwide?

3G Electric supplies MASTERDRIVE coupling flanges worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on the 8S-42MM or other MASTERDRIVE parts.

How to select the correct MASTERDRIVE coupling flange?

Select a MASTERDRIVE coupling flange by matching the coupling size, bore type (round keyed), and shaft diameter to your application. Verify the outside diameter and maximum speed rating (4,500 RPM for the 8S-42MM) meet your system requirements. Always confirm the metric bore dimension before ordering.

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 finished bore close-coupled flanges. 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

Cross-referenced by specification & description
MASTERDRIVE Coupling Flange: 8 Coupling Size, 4,500 RPM Max Speed, 5 29/64 in Outside Dia, Cast Iron (MPN 8S-38MM)
MASTERDRIVE
MASTERDRIVE Coupling Flange: 8 Coupling Size, 4,500 RPM Max Speed, 5 29/64 in Outside Dia, Cast Iron (MPN 8S-38MM)
MASTERDRIVE Coupling Flange: 8 Coupling Size, 4,500 RPM Max Speed, 5 29/64 in Outside Dia, Cast Iron (MPN 8S-45MM)
MASTERDRIVE
MASTERDRIVE Coupling Flange: 8 Coupling Size, 4,500 RPM Max Speed, 5 29/64 in Outside Dia, Cast Iron (MPN 8S-45MM)
MASTERDRIVE Coupling Flange: 8 Coupling Size, 4,500 RPM Max Speed, 5 29/64 in Outside Dia, Cast Iron (MPN 8S-48MM)
MASTERDRIVE
MASTERDRIVE Coupling Flange: 8 Coupling Size, 4,500 RPM Max Speed, 5 29/64 in Outside Dia, Cast Iron (MPN 8S-48MM)
MASTERDRIVE Coupling Flange: 8 Coupling Size, 4,500 RPM Max Speed, 5 29/64 in Outside Dia, Cast Iron (MPN 8S-32MM)
MASTERDRIVE
MASTERDRIVE Coupling Flange: 8 Coupling Size, 4,500 RPM Max Speed, 5 29/64 in Outside Dia, Cast Iron (MPN 8S-32MM)
MASTERDRIVE Coupling Flange: 8 Coupling Size, 4,500 RPM Max Speed, 5 29/64 in Outside Dia, Cast Iron (MPN 8S-7/8)
MASTERDRIVE
MASTERDRIVE Coupling Flange: 8 Coupling Size, 4,500 RPM Max Speed, 5 29/64 in Outside Dia, Cast Iron (MPN 8S-7/8)
MASTERDRIVE Coupling Flange: 8 Coupling Size, 4,500 RPM Max Speed, 5 29/64 in Outside Dia, Cast Iron (MPN 8S-30MM)
MASTERDRIVE
MASTERDRIVE Coupling Flange: 8 Coupling Size, 4,500 RPM Max Speed, 5 29/64 in Outside Dia, Cast Iron (MPN 8S-30MM)

More from MASTERDRIVE

View all MASTERDRIVE parts
MASTERDRIVE Coupling Flange: 12 Coupling Size, 2,800 RPM Max Speed, 10 in Outside Dia, Cast Iron (MPN 12S-3-7/8)
MASTERDRIVE
MASTERDRIVE Coupling Flange: 12 Coupling Size, 2,800 RPM Max Speed, 10 in Outside Dia, Cast Iron (MPN 12S-3-7/8)
MASTERDRIVE Coupling Flange: 13 Coupling Size, 2,400 RPM Max Speed, 11 3/4 in Outside Dia, Cast Iron (MPN 13S-2-7/8)
MASTERDRIVE
MASTERDRIVE Coupling Flange: 13 Coupling Size, 2,400 RPM Max Speed, 11 3/4 in Outside Dia, Cast Iron (MPN 13S-2-7/8)
MASTERDRIVE Coupling Flange: 12 Coupling Size, 2,800 RPM Max Speed, 10 in Outside Dia, Cast Iron (MPN 12S-2-3/4)
MASTERDRIVE
MASTERDRIVE Coupling Flange: 12 Coupling Size, 2,800 RPM Max Speed, 10 in Outside Dia, Cast Iron (MPN 12S-2-3/4)
MASTERDRIVE Coupling Flange: 11 Coupling Size, 3,600 RPM Max Speed, 8 5/8 in Outside Dia, Cast Iron (MPN 11S-1-1/4)
MASTERDRIVE
MASTERDRIVE Coupling Flange: 11 Coupling Size, 3,600 RPM Max Speed, 8 5/8 in Outside Dia, Cast Iron (MPN 11S-1-1/4)
MASTERDRIVE Coupling Flange: 12 Coupling Size, 2,800 RPM Max Speed, 10 in Outside Dia, Cast Iron (MPN 12S-50MM)
MASTERDRIVE
MASTERDRIVE Coupling Flange: 12 Coupling Size, 2,800 RPM Max Speed, 10 in Outside Dia, Cast Iron (MPN 12S-50MM)
MASTERDRIVE Coupling Flange: 8 Coupling Size, 4,500 RPM Max Speed, 5 29/64 in Outside Dia, Cast Iron (MPN 8S-1-3/4-RSB)
MASTERDRIVE
MASTERDRIVE Coupling Flange: 8 Coupling Size, 4,500 RPM Max Speed, 5 29/64 in Outside Dia, Cast Iron (MPN 8S-1-3/4-RSB)
MASTERDRIVE Coupling Flange: 11 Coupling Size, 3,600 RPM Max Speed, 8 5/8 in Outside Dia, Cast Iron (MPN 11S-1-3/4)
MASTERDRIVE
MASTERDRIVE Coupling Flange: 11 Coupling Size, 3,600 RPM Max Speed, 8 5/8 in Outside Dia, Cast Iron (MPN 11S-1-3/4)
MASTERDRIVE Coupling Flange: 8 Coupling Size, 4,500 RPM Max Speed, 5 29/64 in Outside Dia, Cast Iron (MPN 8S-1-7/8)
MASTERDRIVE
MASTERDRIVE Coupling Flange: 8 Coupling Size, 4,500 RPM Max Speed, 5 29/64 in Outside Dia, Cast Iron (MPN 8S-1-7/8)