Circular Suction Electromagnet

A circular suction-type electromagnet is an electromagnetic device designed with a cylindrical structure, featuring a magnetic field distributed across the circular face used for attraction. When the coil is energized, it generates a powerful electromagnetic suction force to attract ferromagnetic workpieces or materials; upon power disconnection, the magnetism dissipates, releasing the attached objects. Its operating principle is based on electromagnetic conversion: the coil is housed within a soft magnetic material casing and encapsulated in epoxy resin. This design endows the device with characteristics such as compact size, high suction force, robust reliability, full sealing, and strong environmental adaptability.
1. The suction-type electromagnet is one specific variety among many types of electromagnets; it is commonly referred to as an "electromagnetic chuck" or "electric chuck" (hereinafter collectively referred to as "electric chucks"). An electric chuck functions by utilizing a current-carrying coil to generate a magnetic field; using a conductive material as a medium, it behaves like a permanent magnet. The core material is typically constructed from pure iron or silicon steel—materials that are easily magnetized yet just as easily demagnetized—ensuring that magnetism is present only when power is applied and vanishes immediately upon disconnection.
2. The housing of this product is constructed from pure electrical-grade iron, ensuring that no residual magnetism remains even after prolonged use. The coil bobbin is injection-molded using flame-retardant, reinforced nylon plastic, offering excellent insulation properties, high resistance, and high-temperature durability. The coil itself is wound using standard-compliant enameled copper wire.
We have specialized in the R&D and manufacturing of electromagnets for many years, and our products are ISO 9001 certified. We offer a comprehensive, one-stop service ranging from design and prototyping to mass production. We maintain ample stock of standard specifications, while non-standard custom orders feature short lead times. Prior to leaving the factory, every product undergoes rigorous suction force testing and insulation verification to ensure stable and reliable quality.

Core Advantages
1. Compact size, powerful suction
2. Fully sealed, waterproof design
3. High-temperature resistance
4. Customizable suction force
5. Convenient installation: The back of the suction cup features pre-drilled threaded holes, facilitating easy connection and secure mounting to robotic arms, hoisting equipment, or other automated devices.

Typical Application Fields
Lifting and Handling: Handling ferromagnetic materials such as steel plates, steel pipes, iron scraps, castings, pig iron blocks, small components, screws, nuts, etc.
Automation Equipment: End-of-arm tooling for robotic arms, robotic suction cups, material handling on automated assembly lines, and sorting systems.
Machine Tool Processing: Workpiece clamping and positioning for rotary surface grinders, cylindrical grinders, and lathes.
Underwater Operations: Salvaging ferromagnetic metal objects from water (enabled by the fully sealed, waterproof design).
Special Operating Conditions: High-temperature environments.

Applicable Environment
Avoid prolonged exposure to high-temperature iron objects.
The unit generates heat during operation; allow it to dissipate heat naturally.
When operating in high-temperature environments, external cooling devices (e.g., water cooling, air cooling) must be employed (water cooling requires additional waterproofing protection). The unit's internal temperature should be maintained below 130°C.
For use in outdoor, underwater, or complex environments, please contact our company to discuss specific requirements; customized solutions are available.
Prevent the suction surface from impacting hard, sharp-edged objects. If the suction surface becomes uneven or damaged, the suction force will decrease, compromising the adsorption effectiveness.

Installation and Usage Instructions
1.  The electric suction cup operates on a DC power supply. Common voltages include DC 5V, 6V, 12V, and 24V; AC 220V versions are available via customization. Please adhere to the voltage specifications marked on the product label (customization is available for special technical requirements).
2.  Wiring Diagram: (Note: The wiring method is non-polar; there is no distinction between positive and negative terminals).
3.  Within the rated voltage range, the suction force can be adjusted by varying the voltage level (the relationship is directly proportional).
4.  Secure the unit in place by fastening screws through the threaded holes located on the back of the suction cup.

Precautions Attention:
To achieve the maximum suction force during operation, the electromagnetic chuck must meet the following conditions:
1. The object being lifted must be composed of a material with good magnetic permeability.
2. The power supply must be utilized correctly, and the voltage must be stable.
3. The surface of the object being lifted must be extremely flat and clean.
4. The contact area between the object being lifted and the chuck must be greater than or equal to the chuck's suction surface area (i.e., the chuck's maximum outer diameter).
5. The object being lifted must have a thickness greater than 8 mm to achieve the rated suction force; as the thickness decreases, the suction force will also decrease.
6. There must be no gap or intervening object between the chuck and the object being lifted. Failure to meet any of the above conditions will result in reduced suction force, preventing the device from reaching the maximum suction force indicated on the electromagnetic chuck.