Magnetic Disc Shaft Couplings

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Magnetic Disc Shaft Couplings  Item No. HS-OFX series

Disc type magnetic couplings consist of two opposing discs with powerful rare earth magnets. The torque applied to one disc is transferred through an air gap to the other disc. Because of its simple flat design, you can have angular misalignment of up to 3º or parallel misalignment up to ¼” and still transmit nearly full rotational torque. You could also fabricate an inexpensive flat barrier to separate the atmospheres or fluids surrounding the two discs. This is our simplest and most versatile coupling.

Advantages of magnetic gears:
Contactless
Environmental friendly
Permanent-magnetic
Maintenance-free
no noise

The magnetic disk couplings is a device for non-contact power transmission using the interaction of the magnetic poles’ attraction and repulsion. Magnetic gears are products that are driven in a non-contact state on production lines such as LCD, PDP, PCB, OLED, and SOLARCELL that do not allow fine impurities in a clean environment. Replaces mechanical gears that rely on friction to drive.The magnetic gear is composed of two parts: NdFeB magnet ring and bracket base. The magnetic ring of the magnetic gear is the most important part of the magnetic drive wheel. The height of its magnetic area and the number of teeth determine the torque of the magnetic gear.

Typical applications include magnetic mixers and magnetic drive pumps.

The disc magnetic couplings are made of two opposing flat discs. Each disc is filled with rare-earth magnets, whose poles alternate in a north-south pattern. Torque is transmitted through the air gap between the two discs—the size of this gap is one factor determining transmission efficiency. Given the simple geometry of the discs, they can be manufactured easily and fitted without any complex bearing arrangements. Stainless Steel Disc Type Coupling Magnet Gear

These couplings are compact and allow a maximum torque of 18.5 Nm. They have an excellent feature concerning installation, as there can be a maximum angular misalignment of 3° or 1/4 inch of parallel misalignment, which makes them very useful for applications where shaft alignment is not easy to accomplish. Because this uses planar magnetic attraction, smaller air gaps increase torque, but since the discs do not have much surface area, overall torque capacity is low.

Disc magnetic couplings are widely used in magnetic stirrers and small magnetic-driven pumps, particularly in mixing systems for laboratory equipment, biopharmaceuticals, and food processing. Magnetic Disc Coupler Gear

Technical Advantages of magnetic coupling

Contactless and Wear-Free: The lack of physical contact eliminates friction and wear, extending equipment life.

Zero Leakage: Power is transmitted via a magnetic field, and the isolation barrier provides a complete seal, preventing liquid or gas leakage.

Low Noise and Low Vibration: The lack of mechanical contact ensures smooth operation, significantly reducing noise and vibration, and improving the working environment. Disk Magnetic Gear Coupling Coupler

Through-Wall Power Transmission: The magnetic field can penetrate non-magnetic materials, making it suitable for applications that isolate the drive and driven components.

Torque Limiting: When the load exceeds the designed torque, the magnetic coupling automatically “slips,” protecting the system from overload damage.

Easy Installation: High tolerance for shaft misalignment simplifies installation and reduces precision requirements.

The lifespan of magnetic couplings largely depends on the operating conditions, the load cycle, and the quality of maintenance, and usually varies from 15 to 30 years. The component’s wear is substantially minimized due to the non-contact design, while using high-grade permanent magnet materials and safety provisions to extend its lifetime. Magnetic Disk Couplings