Understanding The Superiority of Electro Permanent Lifting Magnets with Case Study

Understanding The Superiority of Electro Permanent Lifting Magnets with Case Study

In the world of heavy lifting, efficiency, safety, and adaptability are paramount. This is especially true in environments such as steel structure plants, shipyards, steel mills, and ports where precision and reliability are crucial. The choice of lifting equipment can make a significant impact on productivity and safety. In recent years, the shift towards more sophisticated equipment has led to a growing preference for electro permanent lifting magnets over traditional electromagnetic lifters. Let’s delve into a case study that highlights the clear advantages of these magnets.

The Case for Change to Electro Permanent Lifting Magnets

Consider a scenario where a client’s overhead crane, with a lifting capacity of 20 tons, initially used electromagnetic lifters for handling steel plates. However, due to increased business demands, the weight of the steel plates has significantly increased by several tons. This posed a challenge as the electromagnetic lifters, though effective initially, could no longer meet the crane’s lifting capacity.

The setup included a rotating device at the wellhead, with six electromagnetic units, each capable of lifting up to 4.3 tons. However, with the combined weight of the wellhead, electromagnets, and beams totaling 12.5 tons, the maximum weight that could be lifted was only 7.5 tons. This fell short of the requirement to lift the now 12-ton steel plates efficiently.

Facing this dilemma, the client sought solutions and turned to electro permanent lifting magnets for answers. Our company proposed a comprehensive solution featuring a 12-ton lifting beam combined with magnets, totaling a lifting capacity of only 1.7 tons. With this setup, including the rotating device, the maximum weight to be lifted would not exceed 5 tons. This solution ensured that the 12-ton steel plates could be handled effortlessly and safely.electric permanent lifting magnet

The Superiority of Electro Permanent Lifting Magnets

The key difference between electromagnetic lifters and electro permanent lifting magnets lies in their construction. This leads to a significant disparity in weight, with electro permanent lifting magnets weighing less than half of electromagnetic lifters for the same lifting capacity.

  1. Permanent Magnet Technology: Electro permanent lifting magnets utilize rare-earth permanent magnet steel, generating powerful and stable magnetic forces. This results in smaller magnet sizes with exceptional lifting strength.
  2. Electromagnetic Coil vs. Permanent Magnet: Electromagnetic lifters rely on electromagnetic coils to generate magnetic forces. As the lifting capacity increases, so does the size and weight of the coils, making the entire lifter bulky and heavy.
  3. Remote Operation and Control: Electro permanent lifting magnets offer versatile operation options. They can be controlled remotely, integrated into crane controls, or even placed on intelligent cranes for PLC-controlled magnetization and demagnetization operations.
  4. Customizable for Various Work Environments: The flexibility of electro permanent lifting magnets allows for adjustments to suit specific work conditions. This ensures that the lifting equipment perfectly matches the operational requirements.


For those considering electro permanent lifting magnets, HVR MAG stands as a reliable and innovative choice. With a wealth of technical expertise and experience in various work environments, our company is committed to delivering tailored solutions that exceed expectations. For more information, please contact us at export@hvrmagnet.com

You May Also Like

About the Author: hvrmag


© 2016 HVR Magnetics Co.,Ltd., is a professional manufacturer of electro permanent magnetic system.