Great Magtech (Xiamen) Electric Co., Ltd. is one of the leading manufacturers and suppliers of shutter magnets in China. Please feel free to wholesale high quality shutter magnets from our factory. If you have any enquiry about cooperation, please feel free to email us.
What Are Shuttering Magnets?
Shuttering magnets are switchable magnetic fixing devices used in precast concrete production. They are placed on steel casting beds to hold side forms, stop ends, wooden formwork, or steel formwork in position before concrete pouring.
Each shuttering magnet contains strong permanent magnets and a steel housing. When the button is pressed, the magnetic force is activated, and the magnet holds the formwork firmly on the steel table. When the magnet needs to be moved, the release tool is used to switch it off and reposition it for the next casting setup.
Key Features of Our Shuttering Magnets
Switchable Magnetic Design
The top button facilitates quick activation and release, enabling workers to install, adjust, and remove formwork more efficiently during precast concrete production.
Strong NdFeB Magnetic Circuit System
The magnetic core uses powerful permanent magnets combined with a steel magnetic flux design, improving holding performance on steel casting beds.
Durable Steel Housing
The steel housing helps protect the internal magnets from impact and damage during daily handling.
Multiple Holding Force Options
Available holding force options include 450 kg, 600 kg, 800 kg, 900 kg, 1000 kg, 1350 kg, 1800 kg, 2100 kg, and 3000 kg.
Adapter Compatibility
The threaded holes on the top allow connection with different adapters, making the magnet suitable for wooden forms, steel forms, or customized side form systems.
Specification of Shuttering Magnet
| Item |
L mm |
W mm |
H mm |
LI mm |
L2 mm |
L3 mm |
HI mm |
H2 mm |
H3 mm |
M | Pull Force ≥kg |
| GME-450 | 170 | 60 | 40 | 67.5 | 67. 5 | -- | 73 | 66.5 | -- | M12 | ≥450 |
| GME-600 | 170 | 60 | 40 | 67.5 | 67. 5 | -- | 73 | 66.5 | -- | M12 | ≥600 |
| GME-600S-Step | 200 | 60 | 40 | 72.5 | 97. 5 | 42 | 73 | 66.5 | 10 | M12 | ≥600 |
| GME-800S | 190 | 95 | 43 | 67 | 93 | 50 | 80 | 73.5 | 10 | M12 | ≥800 |
| GME-900 | 280 | 60 | 40 | 122 | 122 | -- | 73 | 66.5 | -- | M12 | ≥900 |
| GME-900S | 195 | 95 | 43 | 67 | 98 | 50 | 80 | 73. 5 | 10 | M12 | ≥900 |
| GME-1000S-Step | 200 | 95 | 43 | 67 | 100 | 50 | 80 | 73. 5 | 10 | M12 | ≥1000 |
| GME-1350 | 320 | 90 | 60 | 135 | 135 | -- | 98 | 90 | -- | M16 | ≥1350 |
| GME-1350S-Step | 320 | 90 | 60 | 113 | 161 | 47 | 98 | 90 | 10 | M16 | ≥1350 |
| GME-1300 | 210 | 95 | 45 | 80 | 90 | 40 | 73 | 65 | 10 | M16 | ≥1300 |
| GME-1600 | 270 | 120 | 60 | 110 | 110 | -- | 98 | 90 | -- | M16 | ≥1600 |
| GME-1800 | 320 | 120 | 60 | 135 | 135 | -- | 98 | 90 | -- | M16 | ≥1800 |
| GME-2100 | 320 | 120 | 60 | 135 | 135 | -- | 98 | 90 | -- | M16 | ≥2100 |
| GME-2400 | 320 | 120 | 60 | 135 | 135 | -- | 98 | 90 | -- | M16 | ≥2400 |
|
GME-2600 |
320 | 120 | 60 | 135 | 135 | -- | 98 | 90 | -- | M16 |
≥2600 |
Application Of Precast Concrete Magnet
When using formwork magnets, it is essential to ensure the base is clean and free of debris; otherwise, foreign matter can create a significant air gap between the magnet and the equipment or mold, thereby reducing the holding force.
Precast concrete technology has evolved into a modern, eco-friendly molding process widely used in the construction of walls, floor slabs, and even roofs. From private residences to large-scale structures, this technology demonstrates exceptional durability and flexibility while offering significant cost-effectiveness. Driven by these advantages, many construction companies have adopted this new method; its application has expanded from Europe and South America to the UAE and India, and it is now being progressively introduced to the Chinese market.
Quality Control Before Shipment
Before shipment, Great Magtech can check the main dimensions, surface condition, button movement, magnetic force, housing appearance, thread holes, and packing condition. For custom shuttering magnets or adapter sets, samples or drawings can be confirmed before batch production.
This helps customers receive shuttering magnets that are ready for precast formwork setup and reduces mismatch risk during production.
Package Of Shuttering Magnet
Styrofoam box - sheet metal - double-wall corrugated cardboard box - waterproof bag
Custom Shuttering Magnet Solutions
Different precast factories use different side forms, steel tables, and casting methods. Standard shuttering magnets work for many common setups, but some production lines need special sizes, stronger holding force, or custom adapters.
Great Magtech can supply standard shuttering magnets and make custom magnetic fixing solutions based on your formwork system.
Custom options include:
Holding force
Magnet size
Box material
Thread hole position
Adapter design
Surface treatment
Formwork matching
Logo marking
Packing method
OEM and ODM production
FAQ
Q: What are shuttering magnets used for?
A: Shuttering magnets are used to fix side forms, stop ends, and formwork profiles on steel casting beds during precast concrete production. They help reduce welding, drilling, and bolting work.
Q: How do I choose the right holding force?
A: The right holding force depends on formwork height, concrete side pressure, vibration method, steel table condition, magnet spacing, and adapter design. Smaller models are suitable for light formwork, while higher-force models are better for taller or heavier side forms.
Q: Why does the magnet lose holding force during use?
A: Holding force can be reduced by concrete residue, dust, oil, paint layers, uneven steel tables, or any air gap between the magnet bottom and the steel surface. Cleaning the bottom surface before use is important.
Q: Can shuttering magnets be used with wooden formwork?
A: Yes. Shuttering magnets can be used with wooden formwork when suitable adapters or fixing brackets are applied.
Q: Can the adapter be customized?
A: Yes. Adapters can be customized according to the side form profile, height, fixing method, and project drawings.
Q: How should shuttering magnets be maintained?
A: Keep the magnet's bottom clean, avoid impact, use the correct release tool, remove concrete residue after use, and store the magnets in a dry place.
Q: What information should I provide for a quotation?
A: You can provide the required holding force, formwork height, formwork material, steel table condition, adapter drawing, quantity, and application photos.
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