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MARTIN Bore to Size Chain Coupling Sprocket 4012 - Bore to Size Chain Coupling Sprockets
MARTINBore to Size Chain Coupling Sprockets

MARTIN Bore to Size Chain Coupling Sprocket 4012

The MARTIN Chain Shaft Coupling Hub: 40 is a bore-to-size chain coupling sprocket made of steel. It features a round keyed design and accommodates a bore diameter range of 7/16 to 7/8 in. This hub is compatible with…

SKU 3G-OTH-153508

Brand
MARTIN
Item
Bore to Size Chain Coupling Sprocket 4012
Part Number
4012
Category
Bore to Size Chain Coupling Sprockets
Available to Order
Also known as:4012MARTIN
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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

MARTIN
Manufacturer Part Number
4012
Type
Steel, For Keyed Shaft Type, Round Keyed
Bore Dia
7/8 in

Technical Documents

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

Product Description

The MARTIN Chain Shaft Coupling Hub: 40 is a bore-to-size chain coupling sprocket made of steel. It features a round keyed design and accommodates a bore diameter range of 7/16 to 7/8 in. This hub is compatible with keyed shafts and is identified by manufacturer part number 4012.

Frequently Asked Questions

What is a MARTIN Chain Shaft Coupling Hub used for?

A MARTIN Chain Shaft Coupling Hub connects two shafts in power transmission systems, typically in conveyors, gearboxes, or industrial machinery. It uses a roller chain to transmit torque while accommodating minor misalignment. This steel hub is designed for keyed shafts and is common in material handling and manufacturing applications.

What are the specifications of the MARTIN 4012 coupling hub?

The MARTIN 4012 coupling hub is a size 40 steel hub with a round keyed bore. It accepts bore diameters from 7/16 to 7/8 in and is designed for keyed shafts. The manufacturer part number is 4012. It is a bore-to-size chain coupling sprocket used in power transmission systems.

Where to buy MARTIN chain coupling hubs worldwide?

3G Electric supplies MARTIN chain coupling hubs worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on the MARTIN 4012 hub or other power transmission components across 14 industrial departments.

How to select the right MARTIN chain coupling hub for a keyed shaft?

To select the correct MARTIN hub, match the chain size (e.g., 40) and bore diameter range (7/16 to 7/8 in) to your shaft dimensions. Ensure the hub type (round keyed) matches your shaft keyway. For applications requiring higher torque or speed, consult a power transmission specialist. 3G Electric can help source the right MARTIN component.

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.
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MARTIN Products

3G Electric supplies MARTIN bore to size chain coupling sprockets. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Steel bore-to-size chain coupling sprocket with a round keyed bore diameter of 1 11/16 inches, designed for use with keyed shafts. Used in power transmission systems to connect rotating shafts, accommodating misalignment and absorbing shock loads in conveyors, gearboxes, and material handling equipment
MARTIN
Steel bore-to-size chain coupling sprocket with a round keyed bore diameter of 1 11/16 inches, designed for use with keyed shafts. Used in power transmission systems to connect rotating shafts, accommodating misalignment and absorbing shock loads in conveyors, gearboxes, and material handling equipment

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