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

3G Electric
RFQ CartGet a QuoteSign inSign up
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 9/16 in Bore Dia - Keyed Bore Chain Coupling Sprockets
MARTINKeyed Bore Chain Coupling Sprockets

MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 9/16 in Bore Dia

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 diameter of 3-9/16 in and a keyway size of 1/2 in x 1/4 in. This component is…

SKU 3G-OTH-133049

Brand
MARTIN
Item
Chain Shaft Coupling Hub: 80, Steel, 3 9/16 in Bore Dia
Category
Keyed Bore Chain Coupling Sprockets
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
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

Technical Specifications

MARTIN
Manufacturer Part Number
8020 x 2-3/16
Type
Steel
Bore Dia
3 9/16 in
Keyway Size
1/2 in x 1/4 in
View Full Spec Sheet

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 diameter of 3-9/16 in and a keyway size of 1/2 in x 1/4 in. This component is designed for use in industrial power transmission systems.

Frequently Asked Questions

What is a MARTIN Chain Shaft Coupling Hub used for?

A MARTIN Chain Shaft Coupling Hub connects two shafts in industrial power transmission systems, transmitting torque while accommodating minor misalignment. It is commonly used in conveyors, pumps, and gearboxes across machining, material handling, and other heavy-duty applications.

What are the specifications of the MARTIN 8020 x 2-3/16 coupling hub?

The MARTIN 8020 x 2-3/16 coupling hub has a steel construction, size 80, with a 3-9/16 in round keyed bore and a 1/2 in x 1/4 in keyway. It is designed for chain coupling systems in power transmission, ensuring reliable torque transfer in industrial machinery.

Where to buy MARTIN chain coupling hubs worldwide?

3G Electric supplies MARTIN chain coupling hubs worldwide, handling full logistics and customs clearance for global delivery. As a sourcing specialist across 14 industrial departments, we provide genuine MARTIN components like the 8020 x 2-3/16 hub for power transmission needs.

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

To select a MARTIN chain coupling hub, match the bore diameter and keyway size to your shaft dimensions—here, 3-9/16 in bore with 1/2 in x 1/4 in keyway. Consider the sprocket size (80) and torque requirements. 3G Electric can help interpret your system needs and source the correct hub.

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 →

Similar products

Matched by specification & description
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 9/16 in Bore Dia, 5/8 in x 5/16 in Keyway Size (MPN 8020 x 2-7/16). Key specifications — attr673435: Round Keyed; attr673436: 3-9/16 in; attr673438: 80; attr673457: Steel; attr85393: MARTIN.
MARTIN
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 9/16 in Bore Dia, 5/8 in x 5/16 in Keyway Size (MPN 8020 x 2-7/16). Key specifications — attr673435: Round Keyed; attr673436: 3-9/16 in; attr673438: 80; attr673457: Steel; attr85393: MARTIN.
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 9/16 in Bore Dia, 3/4 in x 3/8 in Keyway Size (MPN 8020 x 2-15/16). Key specifications — attr673435: Round Keyed; attr673436: 3-9/16 in; attr673438: 80; attr673457: Steel; attr85393: MARTIN.
MARTIN
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 9/16 in Bore Dia, 3/4 in x 3/8 in Keyway Size (MPN 8020 x 2-15/16). Key specifications — attr673435: Round Keyed; attr673436: 3-9/16 in; attr673438: 80; attr673457: Steel; attr85393: MARTIN.
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 9/16 in Bore Dia, 7/8 in x 7/16 in Keyway Size (MPN 8020 x 3-3/8). Key specifications — attr673435: Round Keyed; attr673436: 3-9/16 in; attr673438: 80; attr673457: Steel; attr85393: MARTIN.
MARTIN
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 9/16 in Bore Dia, 7/8 in x 7/16 in Keyway Size (MPN 8020 x 3-3/8). Key specifications — attr673435: Round Keyed; attr673436: 3-9/16 in; attr673438: 80; attr673457: Steel; attr85393: MARTIN.
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 9/16 in Bore Dia, 7/8 in x 7/16 in Keyway Size (MPN 8020 x 3-7/16). Key specifications — attr673435: Round Keyed; attr673436: 3-9/16 in; attr673438: 80; attr673457: Steel; attr85393: MARTIN.
MARTIN
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 9/16 in Bore Dia, 7/8 in x 7/16 in Keyway Size (MPN 8020 x 3-7/16). Key specifications — attr673435: Round Keyed; attr673436: 3-9/16 in; attr673438: 80; attr673457: Steel; attr85393: MARTIN.
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 9/16 in Bore Dia, 3/4 in x 3/8 in Keyway Size (MPN 8020 x 3-1/8). Key specifications — attr673435: Round Keyed; attr673436: 3-9/16 in; attr673438: 80; attr673457: Steel; attr85393: MARTIN.
MARTIN
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 9/16 in Bore Dia, 3/4 in x 3/8 in Keyway Size (MPN 8020 x 3-1/8). Key specifications — attr673435: Round Keyed; attr673436: 3-9/16 in; attr673438: 80; attr673457: Steel; attr85393: MARTIN.
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 1/8 in Bore Dia, 3/8 in x 3/16 in Keyway Size (MPN 8018 x 1-3/4). Key specifications — attr673435: Round Keyed; attr673436: 3-1/8 in; attr673438: 80; attr673457: Steel; attr85393: MARTIN.
MARTIN
MARTIN Chain Shaft Coupling Hub: 80, Steel, 3 1/8 in Bore Dia, 3/8 in x 3/16 in Keyway Size (MPN 8018 x 1-3/4). Key specifications — attr673435: Round Keyed; attr673436: 3-1/8 in; attr673438: 80; attr673457: Steel; attr85393: MARTIN.

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). Key specifications — attr673435: Round Keyed; attr673436: 1-11/16 in; attr673438: 50; attr673457: Steel; attr85393: MARTIN.
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). Key specifications — attr673435: Round Keyed; attr673436: 1-11/16 in; attr673438: 50; attr673457: Steel; attr85393: 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). Key specifications — attr673435: Round Keyed; attr673436: 3-7/8 in; attr673438: 100; attr673457: Steel; attr85393: MARTIN.
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). Key specifications — attr673435: Round Keyed; attr673436: 3-7/8 in; attr673438: 100; attr673457: Steel; attr85393: 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). Key specifications — attr673435: Round Keyed; attr673436: 2 in; attr673438: 50; attr673457: Steel; attr85393: MARTIN.
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). Key specifications — attr673435: Round Keyed; attr673436: 2 in; attr673438: 50; attr673457: Steel; attr85393: 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). Key specifications — attr673435: Round Keyed; attr673436: 2 in; attr673438: 50; attr673457: Steel; attr85393: MARTIN.
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). Key specifications — attr673435: Round Keyed; attr673436: 2 in; attr673438: 50; attr673457: Steel; attr85393: 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). Key specifications — attr673435: Round Keyed; attr673436: 2 in; attr673438: 50; attr673457: Steel; attr85393: MARTIN.
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). Key specifications — attr673435: Round Keyed; attr673436: 2 in; attr673438: 50; attr673457: Steel; attr85393: 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). Key specifications — attr673435: Round Keyed; attr673436: 3 in; attr673438: 60; attr673457: Steel; attr85393: MARTIN.
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). Key specifications — attr673435: Round Keyed; attr673436: 3 in; attr673438: 60; attr673457: Steel; attr85393: 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). Key specifications — attr673435: Round Keyed; attr673436: 4-5/8 in; attr673438: 100; attr673457: Steel; attr85393: MARTIN.
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). Key specifications — attr673435: Round Keyed; attr673436: 4-5/8 in; attr673438: 100; attr673457: Steel; attr85393: 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). Key specifications — attr673435: Round Keyed; attr673436: 3 in; attr673438: 60; attr673457: Steel; attr85393: MARTIN.
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). Key specifications — attr673435: Round Keyed; attr673436: 3 in; attr673438: 60; attr673457: Steel; attr85393: MARTIN.