Magnetic disc coupling also called magnetic disk couplings and magnetic disc clutches.
Magnetic disc couplings offer a non-contact transfer of torque. Powered by neodymium magnets, the torque applied to one hub is transferred through an air gap to the other hub. The torque transfer can also operate through a thin flat barrier separating fluids or atmospheres. There is no physical contact between the driving and driven hubs so these couplings never wear out or heat up.Magnetic disk couplings is a type of magnetic shaft couplings.
Magnetic disc coupling working principle:
Face-to-Face Magnetic Torque Coupler Illustration:
This design consists of disc-shaped assemblies. Each disc features a single active magnet surface/side that must be positioned to face the opposing disc for coupling. Typically, the discs are constructed from multiple magnets attached to a mild steel backing plate or housing. The choice of housing material is determined by the harshness of the operating environment.
The torque transmission capacity of the Face-to-Face Coupler improves with the increase of its Outside Diameter (OD). This is due to the enhanced amount of effective magnet material involved in the coupling process, as well as the increased leverage it provides. However, this can be a drawback because the coupler may require a large OD to deliver the desired torque, which can be challenging in terms of integration due to size constraints and may limit the rotational speed.
Face-to-Face Couplers serve as a cost-effective option when the needed torque, speed, and size requirements are within moderate limits.
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Magnetic couplings