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

MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 1/8 in Bore Dia, 1/4 in x 1/8 in Keyway Size - Keyed Bore Chain Coupling Sprockets
MARTINKeyed Bore Chain Coupling Sprockets

MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 1/8 in Bore Dia, 1/4 in x 1/8 in Keyway Size

The MARTIN Chain Shaft Coupling Hub: 80 is a keyed bore chain coupling sprocket made of steel. It features a round keyed bore with a 3-1/8 in diameter and a 1/4 in x 1/8 in keyway size, with 18 teeth. This component…

SKU 3G-OTH-133037

Also listed as: 8018x118 · 8018 x 1 1 8 · 8018-x-1-1-8

Brand
MARTIN
Item
Chain Shaft Coupling Hub: 80, Steel, 3 1/8 in Bore Dia, 1/4 in x 1/8 in Keyway Size
Category
Keyed Bore Chain Coupling Sprockets
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

MARTIN
Manufacturer Part Number
8018 x 1-1/8
Type
Steel
Teeth
18
Bore Dia
3 1/8 in
Keyway Size
1/4 in x 1/8 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

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

Product Description

The MARTIN Chain Shaft Coupling Hub: 80 is a keyed bore chain coupling sprocket made of steel. It features a round keyed bore with a 3-1/8 in diameter and a 1/4 in x 1/8 in keyway size, with 18 teeth. This component is designed for use in industrial power transmission applications.

Frequently Asked Questions

What is the MARTIN Chain Shaft Coupling Hub: 80 used for?

The MARTIN Chain Shaft Coupling Hub: 80 is used in industrial power transmission systems to connect two shafts and transmit rotary motion. It is commonly applied in conveyors, gearboxes, and heavy machinery where a keyed bore coupling sprocket is required for reliable torque transfer.

What are the specifications of the MARTIN 8018 x 1-1/8 coupling hub?

The MARTIN 8018 x 1-1/8 coupling hub has a steel construction, size 80, with 18 teeth. It features a round keyed bore of 3-1/8 in diameter and a keyway size of 1/4 in x 1/8 in. This MARTIN component is designed for keyed bore chain coupling applications in power transmission.

Where to buy MARTIN chain coupling hubs worldwide?

You can source MARTIN chain coupling hubs worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the MARTIN 8018 x 1-1/8 coupling hub.

How to select the right MARTIN chain coupling hub for my application?

To select the right MARTIN chain coupling hub, match the bore diameter and keyway size to your shaft dimensions. For the MARTIN 8018 x 1-1/8, ensure your shaft is 3-1/8 in with a 1/4 in x 1/8 in keyway. Verify the sprocket size (80) and tooth count (18) meet your power transmission requirements.

Used in

Common applications for MARTIN
Conveyor systems — MARTIN chain coupling sprockets (e.g., 6020SK) for torque transmission between motor and conveyor shaft.
Pump drives — MARTIN keyed bore coupling sprockets (e.g., 4016 x 1-3/16) for connecting pump impeller shafts.
Material handling equipment — MARTIN QD bushed sprockets (e.g., 5018SH) for adjustable bore mounting in bucket elevators.
Industrial gearboxes — MARTIN grid coupling seal kits (e.g., 1040T10-SEAL) to dampen vibration in gearbox output shafts.
Compressor systems — MARTIN spacer hubs (e.g., 1120T-SH) for aligning compressor and motor shafts with parallel keyways.
Mining machinery — MARTIN chain coupling hubs (e.g., 10018 x 2-7/16) for heavy-duty torque transfer in crusher drives.

MARTIN Products

3G Electric supplies MARTIN keyed bore chain coupling sprockets. 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
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 1/8 in Bore Dia, 3/4 in x 3/8 in Keyway Size, 18 Teeth (MPN 8018 x 2-7/8)
MARTIN
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 1/8 in Bore Dia, 3/4 in x 3/8 in Keyway Size, 18 Teeth (MPN 8018 x 2-7/8)
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 1/8 in Bore Dia, 3/4 in x 3/8 in Keyway Size, 18 Teeth (MPN 8018 x 2-15/16)
MARTIN
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 1/8 in Bore Dia, 3/4 in x 3/8 in Keyway Size, 18 Teeth (MPN 8018 x 2-15/16)
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 1/8 in Bore Dia, 1/2 in x 1/4 in Keyway Size, 18 Teeth (MPN 8018 x 2-1/8)
MARTIN
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 1/8 in Bore Dia, 1/2 in x 1/4 in Keyway Size, 18 Teeth (MPN 8018 x 2-1/8)
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 1/8 in Bore Dia, 1/2 in x 1/4 in Keyway Size, 18 Teeth (MPN 8018 x 1-15/16)
MARTIN
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 1/8 in Bore Dia, 1/2 in x 1/4 in Keyway Size, 18 Teeth (MPN 8018 x 1-15/16)
MARTIN Chain Shaft Coupling Hub: 60, Steel, 3 in Bore Dia, 3/4 in x 3/8 in Keyway Size, Round Keyed (MPN 6022 x 2-7/8)
MARTIN
MARTIN Chain Shaft Coupling Hub: 60, Steel, 3 in Bore Dia, 3/4 in x 3/8 in Keyway Size, Round Keyed (MPN 6022 x 2-7/8)
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 1/8 in Bore Dia, 5/8 in x 5/16 in Keyway Size (MPN 8018 x 2-5/8)
MARTIN
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 1/8 in Bore Dia, 5/8 in x 5/16 in Keyway Size (MPN 8018 x 2-5/8)

More from MARTIN

View all MARTIN parts
MARTIN Chain Shaft Coupling Hub: 50, Steel, 1 11/16 in Bore Dia, 1/4 in x 1/8 in Keyway Size (MPN 5016 x 1-1/8)
MARTIN
MARTIN Chain Shaft Coupling Hub: 50, Steel, 1 11/16 in Bore Dia, 1/4 in x 1/8 in Keyway Size (MPN 5016 x 1-1/8)
MARTIN Chain Shaft Coupling Hub: 100, Steel, 3 7/8 in Bore Dia, 7/8 in x 7/16 in Keyway Size (MPN 10018 x 3-7/16)
MARTIN
MARTIN Chain Shaft Coupling Hub: 100, Steel, 3 7/8 in Bore Dia, 7/8 in x 7/16 in Keyway Size (MPN 10018 x 3-7/16)
MARTIN Chain Shaft Coupling Hub: 50, Steel, 2 in Bore Dia, 1/2 in x 1/4 in Keyway Size, Round Keyed (MPN 5018 x 1-7/8)
MARTIN
MARTIN Chain Shaft Coupling Hub: 50, Steel, 2 in Bore Dia, 1/2 in x 1/4 in Keyway Size, Round Keyed (MPN 5018 x 1-7/8)
MARTIN Chain Shaft Coupling Hub: 50, Steel, 2 in Bore Dia, 3/16 in x 3/32 in Keyway Size, 18 Teeth (MPN 5018 x 7/8)
MARTIN
MARTIN Chain Shaft Coupling Hub: 50, Steel, 2 in Bore Dia, 3/16 in x 3/32 in Keyway Size, 18 Teeth (MPN 5018 x 7/8)
MARTIN Chain Shaft Coupling Hub: 100, Steel, 4 5/8 in Bore Dia, 1 in x 1/2 in Keyway Size, 20 Teeth (MPN 10020 x 3-15/16)
MARTIN
MARTIN Chain Shaft Coupling Hub: 100, Steel, 4 5/8 in Bore Dia, 1 in x 1/2 in Keyway Size, 20 Teeth (MPN 10020 x 3-15/16)
MARTIN Chain Shaft Coupling Hub: 60, Steel, 3 in Bore Dia, 1/2 in x 1/4 in Keyway Size, Round Keyed (MPN 6022 x 1-15/16)
MARTIN
MARTIN Chain Shaft Coupling Hub: 60, Steel, 3 in Bore Dia, 1/2 in x 1/4 in Keyway Size, Round Keyed (MPN 6022 x 1-15/16)
MARTIN Chain Shaft Coupling Hub: 50, Steel, 2 in Bore Dia, 1/4 in x 1/8 in Keyway Size, Round Keyed (MPN 5018 x 1-3/16)
MARTIN
MARTIN Chain Shaft Coupling Hub: 50, Steel, 2 in Bore Dia, 1/4 in x 1/8 in Keyway Size, Round Keyed (MPN 5018 x 1-3/16)
MARTIN Chain Shaft Coupling Hub: 60, Steel, 3 in Bore Dia, 3/8 in x 3/16 in Keyway Size, Round Keyed (MPN 6022 x 1-3/4)
MARTIN
MARTIN Chain Shaft Coupling Hub: 60, Steel, 3 in Bore Dia, 3/8 in x 3/16 in Keyway Size, Round Keyed (MPN 6022 x 1-3/4)