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    12mm Rigid Flange Shaft Coupling

    Low cost rigid flange shaft coupling connector with an inner diameter of 12 mm. The flange coupling is easy to replace, holds a shaft on a flat surface and allows other parts to be easily fitted to the shaft. A compact flange quick coupling is suitable for a wide range of machinery and equipment, including motors, pumps, compressors and gearboxes.
    SKU: ATO-FC-12
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    The rigid flange shaft coupling is the perfect accessory for connecting RC model motors, this coupling is made from high quality aluminium alloy and is robust and durable. 12mm flange quick coupling's compact design allows it to fit into tight spaces and is a versatile and cost effective solution for a variety of industrial applications.


    • Model: ATO-RFC-12
    • Inner Diameter: 12mm
    • Treatment Process: Oxidation
    • Processing Accuracy: ±0.05mm
    • Tolerance: 0.05mm
    • Weight: 69g


    • A rigid flange shaft coupling is a special coupling that fixes a shaft to a flat surface and allows easy mounting of other accessories on the shaft.
    • The rigid flange shaft coupling is made of high quality aluminium alloy, which is hard and resistant to moisture and rust, and has a long service life.
    • 12mm rigid flange coupling connector is suitable for connecting model shafts, perfect for RC model motors etc.
    • The rigid flange coupling connector is relatively easy to install, thanks to its simple design and few moving parts.

    Dimension (Unit mm)

    12mm rigid flange coupling dimension


    A flange coupling is a type of mechanical joint that is used to connect two rotating shafts in order to transmit power. Flange couplings are commonly used in industrial machinery and equipment, such as pumps, compressors, and turbines. The field of application for flange couplings is wide-ranging and includes industries such as oil and gas, power generation, water treatment, and manufacturing.  

    Gear coupling applications.

    Tips: How does a flange coupling work?

    A flange coupling is a type of mechanical coupling that is used to connect two shafts together. It is commonly used in industrial applications where there is a need to transmit power from one shaft to another. The flange coupling consists of two flanges, one on each shaft, that are bolted together with a gasket in between to create a tight seal.

    The flanges are typically made of steel or cast iron and have a series of holes drilled around the perimeter. The holes on one flange are aligned with the corresponding holes on the other flange and bolts are inserted through the holes and tightened to create a secure connection. The gasket, which is usually made of rubber or some other flexible material, helps to seal the joint and prevent leakage of fluids or gases.

    When the shafts rotate, the flanges rotate with them, transmitting power from one shaft to the other. The bolts and gasket help to keep the two flanges aligned and tightly connected, ensuring that the power transfer is efficient and reliable.

    Flange couplings come in a variety of designs, including full-face flanges, which have a gasket that covers the entire face of the flange, and half- flange couplings, which have a gasket that covers only half of the flange. Other designs include sleeve couplings, which use a cylindrical sleeve to connect the two shafts, and clamp couplings, which use a series of clamps to secure the two flanges together.

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