JG Series Permanent Magnet Lifter for Steel Plate Hoisting
Selecting the Right Model
JG-400KG, JG-600KG, JG-1000KG, JG-2000KG, JG-3000KG, JG-5000KG
Product Overview
The JG Series Permanent Magnet Lifter (also known as a magnetic lifter, permanent magnet hoist, or magnetic suction lift device) is built with high-performance neodymium-iron-boron (NdFeB) permanent magnet materials. It delivers strong lifting force in a compact, lightweight design that requires no external power source—making it an ideal energy-efficient lifting spreader. Key advantages include its small footprint, powerful holding force, zero power consumption, near-zero residual magnetism, and a high safety factor.
Primary Applications
Permanent Magnet Lifters are available in two configurations: manual and fully automatic. Both types utilize high-performance NdFeB permanent magnet materials, with a maximum breakaway force of 2.8 to 4 times the rated lifting capacity. These lifters are designed for hoisting and transporting steel plates, iron blocks, and cylindrical ferromagnetic materials. They are widely used across industries such as machining, mold and die manufacturing, warehouse logistics, shipbuilding, construction machinery, and automotive manufacturing.
Key Features
1. Compact, space-saving design with straightforward operation
2. High-performance permanent magnets that resist demagnetization over extended service life
3. No power supply or auxiliary power source required—energy-efficient and safe
4. Advanced magnetic circuit balancing delivers strong holding force with near-zero residual magnetism
5. Maximum breakaway force of 3.5 times the rated capacity for an exceptional safety factor
Scope of Use
Permanent Magnet Lifters are suitable for lifting and transporting steel plates, iron blocks, and cylindrical ferromagnetic materials, including machine components, stamping dies, and various steel products.
They are extensively used in mechanical engineering, mold manufacturing, warehouse and logistics operations for moving magnetic conductive materials such as steel plates and ingots.
These lifters are also well-suited for ambient-temperature steel plate lifting and handling in shipbuilding, construction machinery, and automotive industries.
Product Advantages
1. Computer-simulated magnetic circuit design ensures optimal field distribution and deep magnetic penetration
2. Unlike electromagnetic lifters, no excitation power supply or cooling system is needed—simplifying the overall structure
3. Energy-efficient with a low failure rate
4. Easy to operate with reliable, safe performance
5. Technical indicators comply with JB/T8711-1998 standard
Construction and Components
The Permanent Magnet Lifter consists of a powerful magnetic system built from high-performance NdFeB permanent magnet materials. Rotating the control grip alters the direction of magnetic flux lines within the system, enabling the pick-up and release of workpieces. A lifting eye at the top of the lifter is provided for hoisting, while a V-shaped groove on the bottom allows for secure attachment of cylindrical workpieces.
Operating Principle
The Permanent Magnet Lifter operates on Faraday's law of electromagnetic induction. Inside, high-performance NdFeB permanent magnet materials generate a powerful magnetic force within the magnetic circuit. Flipping the handle changes the direction of the magnetic flux lines, switching the lifter between its active and inactive states. With no external power connection required, it represents a safe, energy-efficient, and highly effective new-generation lifting tool.
When the lifter is in the active state, the contact surface at the base forms a pair of longitudinal magnetic poles that firmly grip ferromagnetic workpieces. The V-shaped groove on the bottom enables lifting of both flat plate materials and cylindrical workpieces. Note that the lifter requires a minimum plate thickness and surface area to achieve optimal holding performance.
Operating Instructions
1. Rotate the control grip to the "ON" position to activate the lifter
2. Place the base of the lifter flat against the workpiece surface, ensuring the contact area is clean and free of debris
3. Confirm secure attachment before beginning the lift
4. After positioning the load, set it down gently and rotate the grip to the "OFF" position to release
5. Clean the base after use and store in a dry location
Important: The workpiece thickness must not be less than the minimum specified in the product manual. Never exceed the rated lifting capacity. Do not lift workpieces with temperatures exceeding 80°C.
Contact Us
Henan Kelude Heavy Industry Co., Ltd. specializes in the manufacturing of JG Series Permanent Magnet Lifters and a full range of lifting spreaders. We offer complete specifications and custom non-standard solutions. Contact us for inquiries or visit our facility for a consultation.
Frequently Asked Questions
Q: Why doesn't a permanent magnet lifter require a power supply?
A: The JG Series Permanent Magnet Lifter uses high-performance NdFeB permanent magnet materials. The strong magnetic field generated by the permanent magnets themselves holds and lifts workpieces, eliminating the need for an external power source or auxiliary power support—making it an energy-efficient lifting solution. Kelude Heavy Industry's permanent magnet lifters are ideal for environments without power access or where explosion-proof operation is required, offering safe and convenient handling.
Q: What is the lifting capacity and safety factor of the permanent magnet lifter?
A: The JG Series Permanent Magnet Lifter is available in six rated capacity options ranging from 400kg to 5000kg (400/600/1000/2000/3000/5000kg). The maximum breakaway force is 2.8 to 4 times the rated capacity, with a safety factor that complies with the JB/T 10732 standard. When in use, ensure the workpiece surface is flat and the thickness meets the magnetic circuit design requirements. Never exceed the rated lifting capacity.
Q: What types of materials can be lifted with a permanent magnet lifter?
A: Permanent Magnet Lifters are suitable for lifting and transporting magnetic conductive workpieces such as steel plates, iron blocks, and cylindrical ferromagnetic materials. They are widely used in machining, mold manufacturing, warehouse logistics, shipbuilding, construction machinery, and automotive industries. When lifting cylindrical workpieces, use the appropriate auxiliary attachments to ensure full contact between the workpiece and the magnetic pole surface.
Q: What routine maintenance does a permanent magnet lifter require?
A: Before each use, check that the contact surface is clean and free of oil, grease, or metal filings. After extended service, inspect the permanent magnets for signs of demagnetization (indicated by reduced lifting force). Store the lifter in a dry environment, avoiding high temperatures and severe impacts. The control grip on manual lifters should rotate smoothly, while fully automatic models require periodic inspection of the internal drive mechanism. Kelude Heavy Industry provides comprehensive after-sales maintenance support.
