Paragon Flexible Couplings

How to select the right coupling

1) Engine horse power and maximum rated RPM.

2) Type of gearbox and reduction ratio.

3) Gearbox flange details: Diameter of flange, Diameter of register, Bolt circle diameter of fixing holes, Size and quantity of holes. (Bolt circle diameter is the distance between the center of the hole at 12 o'clock position to the center of the hole at 6 o'clock)


Coupling Capacity = HP x Gear Ratio x 100/Max Rated RPM. Once your capacity is determined select your R&D Coupling that that matches the capacity for your engine.


We are Journeymen Propeller Technicians, Boat Propeller Sales and Repair, 40 Years Experience, Authorized Distributors. For more information on our products please visit our catalog and download page. Questions? 866-790-7767 or email - info@getaprop.com

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R&D Flex Coupling 910-005

4" Paragon - R & D Flexible Coupling Capacity 7. The R & D Flexible Coupling fits ..

$179.95 Ex Tax: $179.95