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

3G Electric
MASTERDRIVE 9S-45MM Finished Bore Close-Coupled Flange - Finished Bore Close-Coupled Flanges
MASTERDRIVEFinished Bore Close-Coupled Flanges

MASTERDRIVE 9S-45MM Finished Bore Close-Coupled Flange

The MASTERDRIVE Coupling Flange: 9 Coupling Size is a Finished Bore Close-Coupled Flange designed for industrial power transmission. This cast iron flange features a 6 11/32 in outside diameter, a 3,750 RPM max…

SKU 3G-OTH-134575

Also listed as: 9S45MM · 9S 45MM

Brand
MASTERDRIVE
Item
9S-45MM Finished Bore Close-Coupled Flange
Part Number
9S-45MM
Category
Finished Bore Close-Coupled Flanges
Available to Order
Also known as:9S-45MMMASTERDRIVE
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
9S-45MM
Type
Cast Iron
Max Speed
3,750 RPM
Outside Dia
6 11/32 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: 9 Coupling Size is a Finished Bore Close-Coupled Flange designed for industrial power transmission. This cast iron flange features a 6 11/32 in outside diameter, a 3,750 RPM max speed, and a Metric round keyed bore. The MASTERDRIVE brand component is identified by manufacturer part number 9S-45MM.

Frequently Asked Questions

What is a MASTERDRIVE coupling flange used for?

A MASTERDRIVE coupling flange connects rotating shafts in industrial power transmission systems. It is used in pumps, compressors, and conveyors to transmit torque while compensating for minor misalignment. The 9S-45MM model is a finished bore close-coupled flange for direct mounting.

What are the specifications of the MASTERDRIVE 9S-45MM coupling flange?

The MASTERDRIVE 9S-45MM coupling flange has a 9 coupling size, 3,750 RPM max speed, 6 11/32 in outside diameter, and a Metric round keyed bore. It is made of cast iron and is a finished bore close-coupled flange designed for industrial power transmission.

Where to buy MASTERDRIVE coupling flanges worldwide?

You can source MASTERDRIVE coupling flanges worldwide through 3G Electric. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us to order the MASTERDRIVE 9S-45MM or other coupling components.

How to select the right MASTERDRIVE coupling flange size?

To select the correct MASTERDRIVE coupling flange, match the coupling size, bore type (Metric round keyed), and outside diameter to your shaft dimensions and speed requirements. The 9S-45MM model supports up to 3,750 RPM. Consult the MASTERDRIVE catalog or a 3G Electric specialist for application guidance.

Used in

Common applications for MASTERDRIVE
Pump drives — MASTERDRIVE L110 or L190 jaw coupling hubs with elastomeric spiders to accommodate misalignment between motor and pump shafts.
Gearbox input connections — MASTERDRIVE finished bore close-coupled flanges in size 10 or 11 for rigid mounting to gearbox shafts.
Conveyor systems — MASTERDRIVE straight jaw coupling hubs in L035 or L110 sizes for light-to-medium duty torque transmission.
Mixers and agitators — MASTERDRIVE cast iron close-coupled flanges with keyed bores for direct motor mounting in vertical or horizontal arrangements.
Compressor packages — MASTERDRIVE jaw coupling hubs and inserts for connecting motor shafts to compressor input shafts with vibration damping.
MRO spares — individual MASTERDRIVE hubs, flanges, and spiders for replacement of worn coupling components without full assembly changeout.
Not sure this is the right part? Photo-identify it→

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 →

More from MASTERDRIVE

View all MASTERDRIVE parts →
Cast iron close-coupled flange with finished bore and round keyed seat. Coupling size 11, outside diameter 8 5/8 in, maximum speed 3,600 RPM. Used for rigid shaft connections in power transmission systems such as pumps, compressors, and conveyors
MASTERDRIVE
Cast iron close-coupled flange with finished bore and round keyed seat. Coupling size 11, outside diameter 8 5/8 in, maximum speed 3,600 RPM. Used for rigid shaft connections in power transmission systems such as pumps, compressors, and conveyors
This cast iron close-coupled flange has a 4 in outside diameter and a round keyed bore in inch dimensions. Designed for connecting rotating shafts in power transmission systems such as pumps, gearboxes, and conveyors, it supports speeds up to 6,000 RPM
MASTERDRIVE
This cast iron close-coupled flange has a 4 in outside diameter and a round keyed bore in inch dimensions. Designed for connecting rotating shafts in power transmission systems such as pumps, gearboxes, and conveyors, it supports speeds up to 6,000 RPM
This finished bore close-coupled flange is used to connect a motor shaft to a driven component in power transmission systems. It features a round keyed metric bore and is constructed from cast iron. With a maximum speed of 3,750 RPM and an outside diameter of 6 11/32 inches, it is suitable for applications requiring a compact, rigid connection
MASTERDRIVE
This finished bore close-coupled flange is used to connect a motor shaft to a driven component in power transmission systems. It features a round keyed metric bore and is constructed from cast iron. With a maximum speed of 3,750 RPM and an outside diameter of 6 11/32 inches, it is suitable for applications requiring a compact, rigid connection
Cast iron finished bore close-coupled flange with a round keyed bore. Outside diameter 5 29/64 inches, maximum speed 4,500 RPM. Used in power transmission systems to connect rotating shafts in pumps, compressors, and conveyors
MASTERDRIVE
Cast iron finished bore close-coupled flange with a round keyed bore. Outside diameter 5 29/64 inches, maximum speed 4,500 RPM. Used in power transmission systems to connect rotating shafts in pumps, compressors, and conveyors

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first