Vacuum Lifting Systems, Permanent lifting magnets

Permanent lifting magnets use a permanent magnet to lift ferromagnetic materials. They are a standard tool in industrial settings for handling steel plates, die casting, and other steel parts. Here is a detailed explanation of how they work and their applications:

How Permanent Lifting Magnets Work:

  1. Magnetic Material: These devices are made from permanent magnetic materials such as neodymium, which creates a solid and stable magnetic field.
  2. Magnet Activation: The magnet is activated by a lever or switch, which aligns the magnetic domains in the material to create a strong external magnetic field. This is typically achieved through a mechanical arrangement that changes the position of the magnetic material relative to the lifting surface.
  3. Lifting: Once the magnet is activated, it is placed against the ferromagnetic object, and the magnetic field causes the object to stick to the magnet.
  4. Carrying the Load: The magnet is usually attached to a hoist or crane, which can then lift the magnetic load.
  5. Deactivation and Release: To release the load, the magnet is deactivated by returning the lever or switch to its original position, which scrambles the magnetic domains and diminishes the external magnetic field, thus releasing the object.

Why People Use Permanent Lifting Magnets:

  • Convenience: They are easy to operate and can be quickly attached and detached from the load.
  • Safety: They provide a secure grip and do not require slings or chains, reducing the risk of slippage or damage.
  • No Power Requirement: As they use permanent magnets, they do not require an electrical power source, making them suitable for use in various environments, including those where electricity is not readily available or is unreliable.

When People Use Them:

  • Metalworking: These magnets are often used in metalworking shops for lifting steel plates, bars, or machine parts.
  • Shipping and Receiving: Warehouses and docks may use them to handle steel loads.
  • Construction: They are used at construction sites to lift and position structural steel components.
  • Automotive: They can move large metal parts and assemblies in the automotive industry.

How People Use Them:

  1. Positioning the Magnet: The operator places the magnet on the load, ensuring complete contact with the surface.
  2. Activating the Magnet: The operator moves the lever or switch to activate the magnet, causing it to adhere to the object.
  3. Lifting the Load: The crane or hoist is used to lift the object, holding the magnet securely.
  4. Transporting: The load can be moved to the desired location while being held by the magnet.
  5. Releasing the Load: The operator deactivates the magnet to remove the object at the destination.

Permanent lifting magnets offer a reliable and efficient method for handling heavy steel objects without external power, making them a versatile tool in various industrial and construction settings.


Manually controlled lifting magnets operate on the same fundamental principles as permanent lifting magnets but with a manual mechanism to control the magnetic field for lifting ferromagnetic materials.

How Manually Controlled Lifting Magnets Work:

  1. Permanent Magnets: These devices typically utilize permanent magnets, such as ferrite or rare earth elements like neodymium, which inherently possess a magnetic field.
  2. Manual Control: A handle or lever manually alters the magnetic circuit. The magnetic circuit is completed in the 'on' position, allowing the field to extend outward and attach to a metal object. In the 'off' position, the magnetic circuit is broken or shunted, effectively reducing or eliminating the external magnetic field.
  3. Lifting Mechanism: When the magnet is in the 'on' position and attached to a metal object, it can be lifted using a hoist, crane, or other mechanical equipment.
  4. Release Mechanism: To release the load, the operator manually switches the device to the 'off' position, interrupting the magnetic field, and the object can be detached from the magnet.

Why People Use Manually Controlled Lifting Magnets:

  • Control: Operators can quickly engage and disengage the magnet, providing greater control over lifting operations.
  • Energy Independence: They do not require electricity, which means they can be used when power is unavailable or as a backup when power is lost.
  • Safety: These magnets provide a secure hold, reducing the risk of accidents associated with chains or clamps slipping off.
  • Versatility: They can be used in various settings, including workshops, warehouses, and construction sites.

When People Use Them:

  • Material Handling: In industries where steel sheets, rods, or components need to be moved, such as in automotive, shipbuilding, or metal fabrication.
  • Loading and Unloading: For loading ferromagnetic materials onto machines for processing or vehicles for transportation.
  • Assembly: In assembly lines, parts need to be picked up, moved, and placed precisely.

How People Use Them:

  1. Positioning: The operator positions the magnet onto the metal object that needs to be lifted.
  2. Activation: The operator manually activates the magnet by engaging the lever or handle, which aligns the magnetic circuit to create a solid attachment to the object.
  3. Lifting: With the magnetic grip secured, the lifting equipment can raise the object to move it as needed.
  4. Transporting: The object can be transported manually or with the aid of mechanical systems to its intended location.
  5. Releasing: To release the metal object, the operator manually disengages the magnet, which breaks the magnetic circuit and allows the object to be detached from the magnet.

Manually controlled lifting magnets are favored for their simplicity, reliability, and convenience in manually operated environments. They enhance productivity and safety in material handling processes where ferromagnetic materials are frequently moved.


Vacuum lifting systems are devices that use a vacuum to attach to an object, allowing it to be lifted and moved. The system typically consists of a vacuum pump, a suction cup or cups, and a hoist or crane. Here's a detailed explanation of how they work and their use cases:

How Vacuum Lifting Systems Work:

  1. Vacuum Generation: The vacuum pump removes air from the space between the suction cup and the object to be lifted. This creates a vacuum, a pressure differential between the cup and the air around it.
  2. Sealing: To maintain the vacuum, a good seal is required. This is usually achieved through soft, flexible materials at the edge of the suction cup, which can conform to the shape and texture of the object's surface.
  3. Lifting Mechanism: Once the vacuum is created and the cup is securely attached to the object, a lifting mechanism, such as a crane or hoist, lifts the object. The vacuum must be maintained throughout this process to secure the object securely.

Why People Use Vacuum Lifting Systems:

  • Safety: Vacuum lifters often allow for a more secure grip on moving objects, reducing the risk of accidents.
  • Efficiency: These systems can speed up the handling process, as they can be quicker to attach and release than other lifting methods.
  • Ergonomics: Vacuum lifting can reduce the physical strain on workers, as the vacuum system provides the lifting force rather than human or mechanical leverage.

When People Use Them:

  • Material Handling: They are used in various industries, especially when dealing with large, flat, or smooth surfaces where the suction cups can create a good seal.
  • Construction: In construction, they are used for moving materials like glass panels, metal sheets, and large wooden boards.
  • Manufacturing: In manufacturing, vacuum lifters are used on assembly lines to move parts or products that are bulky or awkward to handle manually.

How People Use Them:

  1. Attaching the Lifter: The operator places the suction cup(s) onto the object's surface.
  2. Activating the Vacuum: The pump is activated, and the air is evacuated, creating a vacuum that causes the cup to stick to the object.
  3. Lifting and Moving: The crane or hoist lifts the object. The operator can then move the object to the desired location.
  4. Releasing the Object: Once in the correct location, the vacuum is released, usually by letting air back into the space under the suction cup, breaking the seal, and allowing the object to be removed.

Vacuum lifting systems provide a way to handle heavy or awkward objects safely and efficiently. They are instrumental in situations where other lifting methods might be impractical or more hazardous.

Permadur Industries, Your Industrial Lifting Partners

The choice between permanent lifting magnets, manually controlled lifting magnets, and vacuum lifting systems depends on the specific requirements of the task at hand. Each method offers unique advantages regarding safety, efficiency, and operational convenience. Permanent lifting magnets provide a strong and stable lifting solution without power, ideal for handling ferromagnetic materials in various industrial applications. Manually controlled lifting magnets offer the added benefit of precise control, allowing operators to quickly engage and disengage the magnetic field, which is particularly useful in environments where power availability is a concern. On the other hand, vacuum lifting systems offer a versatile and ergonomic solution for lifting a wide range of materials, particularly those with flat and smooth surfaces, making them indispensable in industries where the integrity of the stolen object is paramount.

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