Are you looking for the best lifting magnets for your crane operations in China? With so many options available, choosing the right one can be overwhelming. In this article, we’ll compare the top Chinese manufacturers of lifting magnets, highlighting their unique strengths and the types of magnets they offer, to help you make an informed decision. Let’s dive in and find the perfect lifting magnet for your needs.

Permanent Magnetic Lifter PML type

Product Details: Permanent magnetic lifters are made from high-grade NdFeB magnets, offering high holding power. They are used to lift steel plates, blocks, and other ferromagnetic materials. Key specifications include load capacity, dimensions, and weight. For example, models can have load capacities ranging from 100kg to 3000kg, with dimensions varying accordingly. They often feature a manual handle to switch the magnetic field on and off[1][3][5].

Pros:
– No electrical supply is required during operation, eliminating the risk of mater…
– They can be used in environments where electricity is not readily available.
– No operating costs or maintenance are associated with their use.
– They offer the convenience of an on/off switch without the need for electricity.

Cons:
– The magnetic field strength can reduce over time due to corrosion.
– The magnets cannot be used for hot-device applications due to temperature limita…
– The lifting capacity decreases if the surface of the material is uneven or rough…
– The magnets may lose some of their magnetic properties after several operations.

China Lifting Magnets Suppliers and Manufacturers

Product Details: Allman permanent lifting magnets are made of high-performance Nd-Fe-B permanent magnetic material. They feature a strong magnetic system that can be activated and deactivated by rotating a handle. The magnets have a hanging ring on top and a V-shaped groove for lifting cylindrical objects. Models include PML-1 to PML-20 with rated lifting strengths ranging from 100 kgf to 2000 kgf. The operating temperature is limited to less than 80°C[1].

Pros:
– No electricity power required, making them safe and reliable in environments wit…
– Strong holding power with minimal residual magnetism, light and easy operation,…
– Used widely in mechanical industry, mold manufacturing, warehouse, and transport…

Cons:
– The magnetic field strength is constant and can corrode over time, reducing its…
– Not suitable for hot-device applications and can be affected by surface conditio…
– Cannot vary the poles of the permanent magnet[2][4]

Magnetic lifter Manufacturer in China – Dailymag

Lifting Magnet For Excavator And Crane Manufacturers …

Product Details: The lifting magnet for excavator and crane is designed using electromagnetic principles, where the internal coil is energized to generate a magnetic force. This force passes through a magnetic conductive panel to lift the workpiece. It is specifically used to lift steel scraps into furnaces in steel plants and can handle steel scraps under temperatures of up to 600° C.

Pros:
– Can handle steel scraps under high temperatures
– Suitable for use in steel plants, scrap yards, and other industrial settings

Cons:
– No specific cons mentioned on the webpage, but general cons of electric lifting…

China 100 Kg Lifting Magnet Suppliers and Manufacturers

Product Details: The 100 kg (220 lbs) lifting magnet is designed for lifting and moving steel plates, pipes, and other metal objects. It features powerful N42 neodymium magnets, providing a strong and reliable grip on steel surfaces. The magnet has a 2.5 safety factor, ensuring it can handle loads up to 2.5 times its rated capacity. It is suitable for various applications, including metal fabrication, construction, and manufacturing. The lifter is easy to use, with a convenient release mechanism and ergonomic design for comfortable handling. It can operate in a wide temperature range, making it suitable for both indoor and outdoor use.

Pros:
– Strong and reliable grip on steel surfaces due to powerful N42 neodymium magnets…
– High safety factor of 2.5, ensuring secure lifting operations.
– Versatile and suitable for various applications such as metal fabrication, const…
– Easy to use with a convenient release mechanism and ergonomic design.
– Operates in a wide temperature range, suitable for indoor and outdoor use.

Cons:
– Permanent magnets may lose some of their magnetic properties over time and canno…
– May corrode with time, reducing the strength of the magnetic field.
– Not suitable for loads with uneven or rough surfaces if using electro-permanent…

How to Price Electro Permanent Magnet (EPM) in China?

Product Details: Electro-permanent magnets (EPMs) are priced based on factors such as raw material costs, customer purchase quantity, and specific customer needs. The pricing considers the production cost, market supply and demand, and the transparency of commodity prices globally. EPMs are custom-made to meet specific requirements, including lifting weight, size, contact surface, and working temperature. The products include magnetic grippers, lifting magnets, mold clamping magnets, and chucks for machining. The process involves detailed engineering, program design, and confirmation before production, which adds to the labor and material costs.

Pros:
– Energy saving – only use power during activation and deactivation for a few seco…
– Higher safety – can remain holding the load even in a power failure
– Remote control available
– Magnetic force can be selectively managed for specified operations
– Maintenance free
– Custom-made to specific needs, enhancing efficiency and safety in various applic…

Cons:
– Sensitive to the air gap between the magnet and the load, reducing lifting capac…
– Not suitable for loads with uneven or rough surfaces
– Costs more than permanent and electric magnets
– Requires detailed analysis and customization, which can increase the overall cos…

China Rebar Lifting Magnet Manufacturers Suppliers Factory

Product Details: Rebar lifting magnets are designed for handling hot loads of rebar and are heat-resistant, allowing for the handling of materials up to 600°C. Key specifications include: Size of the magnet – 1400 (L) x 900 (B) mm, Working voltage – 220 Volt DC, Power rating – 6.5 KW, Winding – Aluminium coils, Weight – 3500 Kgs (approx), Class of Insulation – H, Duty cycle – 75%, and Purpose – Billet Lifting. These magnets can handle various materials such as billets, bundles, bar stock, slabs, plates, structurals, long bar stock, rail, hot material, coils, and pipe rebar.

Pros:
– The power cycle is 75% and the working frequency is high, greatly improving work…
– Use strong excitation method (DC-290V/DC-220V) to improve lifting capacity.
– Large lifting electromagnets can use over-excitation methods (DC-350V/DC-290V/DC…
– The lifting power/strength/force of an electromagnet can be increased by increas…

Cons:
– Electric lifting magnets take a lot of energy to use and will heat up very fast….
– There is a risk of material dropping if there is a power failure.

Lifting Magnets

Product Details: Lifting magnets available at Lifting Equipment Store include various types such as electromagnetic, electro-permanent, and permanent magnets. These magnets are used in industries like steel fabrication, construction sites, shipbuilding, scrap metal and recycling, warehousing and distribution, machining shops, and the automotive industry. They can handle a wide range of metal objects, from small parts to large plates, beams, and pipes, and can lift both flat and round materials[3].

Pros:
– Increased Efficiency: Lifting magnets offer a quick and efficient way to move me…
– Improved Safety: Reduces the risks associated with manual handling of heavy or a…
– No Damage to Materials: Does not require physical clamping or gripping mechanism…
– Versatile: Can handle a wide range of metal objects and lift both flat and round…
– Low Maintenance: Permanent lifting magnets require little maintenance since they…
– Energy-Efficient Options: Permanent magnets are energy-free, while electromagnet…

Cons:
– Disadvantages of Permanent Lifting Magnets: Tend to corrode with time, reducing…
– Disadvantages of Electric Lifting Magnets: Heat up quickly and use a lot of ener…
– Disadvantages of Electro-Permanent Lifting Magnets: Sensitive to the air gap bet…

Lifting electromagnet For Crane Suppliers China

Product Details: Lifting Electromagnets for Cranes are devices used to move or lift extremely heavy objects. They consist of an electromagnet attached to a crane, generating a powerful magnetic field to lift ferrous metal objects. These electromagnets are often used in industrial settings such as shipyards and construction sites. They adopt a totally sealed structure with good moisture-proofing, and the non-magnetic fender is made of rolled Mn steel plate. The energizing coils are processed by special technology to enhance electrical and mechanical properties. The rated duty cycle has been increased from 50% to 60%, improving working efficiency. The high-temperature electromagnet can handle

materials up to 700°C, expanding its application range. Installation, operation, and maintenance are convenient.

Pros:
– Reasonable structure, light self-weight, strong attraction force, and low energy…
– Good property of moisture-proofing and magnetism-isolation.
– Heat-resistant insulating material with a long service life.
– Improved working efficiency with a rated duty cycle increased to 60%.
– Convenient installation, operation, and maintenance.
– Can handle high temperatures up to 700°C.

Cons:
– High power consumption as the electromagnet must be energized at all times durin…
– Internal coils can become hotter with long-term energization, potentially weaken…
– Risk of steel falling during handling in the event of an unexpected power failur…

Circular Electric Lifting Magnets Manufacturers and Suppliers

Product Details: Circular electric lifting magnets are designed for lifting and transporting circular or round-shaped steel materials such as steel pipes, billets, and ingots. These magnets feature a unique magnetic circuit design, often with a double wire cladding structure, which enhances heat dissipation and deep penetration capabilities. They are commonly used in steel mills, foundries, and other industrial settings where handling steel materials is necessary. The magnets can be controlled via pendant, wireless remote, or cabin controllers and are integrated into crane systems for efficient material handling[3][4].

Pros:
– High lifting capacity: Electric lifting magnets can generate powerful magnetic f…
– Deep penetration: These magnets can handle materials with small air gaps and are…
– Easy and safe operation: They can be turned on and off quickly, making them idea…
– High automatization and intellectualization: These magnets can operate in highly…

Cons:
– High power consumption: Electric lifting magnets require continuous electrical s…
– Safety risks: Overheating can weaken the magnetic force, and in the event of a p…
– Heat generation: The continuous flow of current through the windings can cause t…

Comparison Table

Frequently Asked Questions (FAQs)

Frequently Asked Questions About Lifting Magnets for Cranes Factories in China

How do lifting magnets work

Lifting magnets use powerful magnetic fields to pick up ferrous materials. They can be either permanent magnets, like neodymium magnets, or electro-magnets that are magnetized through an electric current. When activated, the magnetic field creates a strong attraction to the ferrous material, allowing you to lift it safely and efficiently.

What types of lifting magnets are available

There are two main types of lifting magnets: permanent magnets and electro-magnets. Permanent magnets are always magnetized and can be turned on and off by adjusting the magnetic flux path. Electro-magnets, on the other hand, are magnetized by an electric current and can lift multiple materials at once. Electric permanent lifting magnets combine the benefits of both, using electric current to control the magnetic field.

How safe are lifting magnets

Lifting magnets are designed with safety in mind. They have a built-in safety factor, often indicated by a SWL 3:1 designation, meaning the magnet can handle at least three times the weight it is rated for. Regular inspections, such as every lift, frequent, and periodic checks, are crucial to ensure the magnet and its controls are in good condition. Additionally, features like backup battery units and automatic demagnetization enhance safety during power shortages.

Can lifting magnets handle different shapes and materials

Yes, lifting magnets can handle various shapes and materials. They are particularly effective for lifting ferrous materials like steel plates, H beams, and cylindrical objects. For cylindrical objects, you need to ensure the surface contacts the V-slot of the lifting magnet on two lines. Some lifting magnets can even lift hot materials and sheets from stacks individually.

How do I maintain and inspect my lifting magnets

Maintaining your lifting magnets is essential for safety and efficiency. Before each use, inspect the magnet face and the load for foreign materials and smoothness. Perform frequent visual inspections based on usage, such as monthly for normal service or daily for severe service. Annual UVV tests and a developed maintenance program based on the manufacturer’s recommendations are also necessary. Always disconnect power, lock out, and tag the magnet before any repairs or adjustments.