Holding Lifting Electromagnets: How They Make the Impossible Possible

Table of contents

Chapter 1 : What is a holding lifting electromagnet?

Chapter  2 : Key Features of a holding lifting Electromagnet

Chapter 3 :   How do holding lifting electromagnets work?

Chapter 4 :  The Types of lifting electromagnets

Chapter 5  :  The benefits of using holding lifting electromagnets

Chapter 6 :   How to choose a suitable lifting electromagnet

Chapter 7 :  Additional features to enhance performance

Chapter 8 : Which lifting magnet system is right for your industry?

In today modern industry, efficiency, safety and precision are non-negotiable condition for any project production . Therefore, holding lifting magnet systems do play a key role in an integral part of steel mills, shipyards, recycling plants and fabrication workshops. 

But what are they exactly and how do they work?

Chapter 1 : What is a holding lifting electromagnet?

A holding lifting electromagnet is a specialized holding lifting device that creates a strong magnetic field when an electric current passes through it. This magnetic field enables the electromagnet to attract and firmly holding the ferrous materials such as steel plates, beams, and scrap metal.

Unlike permanent magnets, electromagnets can be turned on and off at will, giving the operator complete control over when to pick up or release a load. This controllability makes them an essential tool in environments where precision and safety are critical.

Chapter  2 : Key Features of a holding lifting Electromagnet

Magnetic Circuit Design

Special magnetic circuit design with high air-gap magnetic density.

Coils are made of aluminum wire, with protective plates made of high-manganese steel featuring excellent wear resistance and impact strength.

Lightweight, low energy consumption, high lifting capacity, and long service life.

Insulation Structure

Designed with a reasonable insulation structure.

Insulation treatment uses vacuum drying and vacuum encapsulation, improving both electrical and mechanical performance of the coil.

Insulation materials reach special Class C heat resistance rating.

High-Temperature Performance

Equipped with special heat-resistant measures, enabling operation for lifting scrap steel at temperatures below 600 °C.

Reliable Structure

Simple, safe, and reliable structure, suitable for all types of lifting equipment.

Control System

Can be paired with electrical control devices based on user crane parameters.

Wireless remote control can be implemented for remote operation.

Chapter  3 :  How do holding lifting electromagnets work?

The holding lifting electromagnet working principle is very simple but very effective:

When the electric current flows through the solenoid coil, it is generating a strong magnetic field.

The magnetic field attracts and holds ferrous materials (steel plates, beams, scrap, etc.) tightly.

Removing power causes the magnetic field to collapse, instantly releasing the load.

Advanced systems can adjust power levels to handle materials of varying sizes and thicknesses.

This simple mechanism ensures high load capacity, precise handling, and safe operation in harsh industrial environments.

Chapter 4 : The Types of lifting electromagnets

Different applications require different magnet designs structure and application. The main types we have been produce as below :

Round lifting electromagnet

Best suited for scrap handling and lifting irregular shaped parts of the machine.

There are two options:

Power-on lift: The magnet activates when power is applied.

Fail-Safe Hold: Magnet requires no power to hold, requires power to release.

Rectangular lifting electromagnet

Ideal for handling plates, sheets and beams in shipyards, steel mills and fabrication plants.

Battery powered lifting electromagnet

Provides mobility and flexibility in situations where direct power supply is not possible.

Chapter 5  : The benefits of using holding lifting electromagnets

Holding lifting Electromagnets are widely used in automated production lines as material or product conveying and control components. They are also applied in robotic arms, food machinery, medical machinery, and automation control systems. Typical applications include lifting cast iron ingots, steel balls, pig iron blocks, machining chips, various scrap metals, foundry returns, cut-off heads, bundled scrap steel, and more.  

Integrating electromagnets into lifting operations offers significant advantages:

Efficiency – Faster lifting speeds reduce material handling time.

Safety – Minimizes manual handling and workplace risks.

Reduce costs – Reduce labor costs and reduce wear and tear on lifting equipment.

Precise Control – Adjustable force allows for safe handling of a variety of materials.

Versatility – Compatible with cranes, hoists and a variety of handling systems.

Chapter 6 : How to choose a suitable lifting electromagnet

When choosing a system, consider:

Rated Voltage: DC Voltage ？

Duty Cycle: TD-60%

Response Time:

The time from when the electromagnet is energized to when the slider completes its expected displacement.

Environment and Service Life:

Environmental conditions and expected service life are key factors for selecting materials and protective treatments.

Environmental factors include temperature, humidity, magnetic/electric fields, corrosive gases, vibration, and impact.

Installation and Connection Methods:

Installation methods: External screws, housing threads, slot-embedded mounting, or other customized solutions.

Power connections: Lead wires, lead wires with terminals/187 plug-in pins, or other configurations.

Integration – Does it work seamlessly with your crane or lift?

Chapter 7 :  Additional features to enhance performance

Modern lifting magnet systems can be equipped with advanced options such as:

Telescopic mechanism with variable load size

Custom hooks or weldable attachments

Protective pads to prevent material damage

Remote or radio control operation

Collision avoidance system

Backup power during power outages for safety

Integrated rotation, flexible operation

Chapter 8 : Which lifting magnet system is right for your industry?

From scrap recycling plants to shipyards and steel mills, lifting electromagnets offer unmatched productivity, safety and cost-effectiveness.

At Dr. Solenoid, we specialize in custom lifting magnet solutions tailored to your specific industrial needs, offering:

Application-specific design

Energy-saving technologies

Advanced security and remote operation features

Smooth integration with cranes and handling systems

✅ Is your company ready to optimize its lifting operations?

📩 Contact Dr. Solenoid today for expert advice and custom solutions.