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What Is a Magnetic Grate?
A grate magnet is a magnetic separator made of multiple high-strength magnetic rods arranged in a grid. You install it in gravity-fed areas like hoppers, chutes, or inlets, where material flows naturally. As your product passes through, the magnetic rods capture tramp iron and fine ferrous particles. This helps you protect downstream equipment, reduce contamination, and maintain consistent product quality without changing your existing process or flow layout.
Types of grill magnet
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Square Magnetic GrateEfficient Contaminant Removal: Removes ferrous metals from bulk materials. Durable Construction: Made with high-quality stainless steel for long-lasting performance. Customizable Sizes: Tailored to fit your processing equipment and specific needs. Versatile Application: Ideal for use in food processing, chemical, and plastic industries. |
Round Magnetic GratePowerful Magnetic Field: Provides a strong magnetic attraction to capture metal contaminants. Space-Saving Design: Compact and easy to integrate into existing systems. Efficient Separation: Removes ferrous particles from powder, granules, and liquids. Low Maintenance: Simple design ensures easy operation and minimal upkeep. |
Easy-Clean Magnetic GrillQuick and Easy Cleaning: Magnetic rods can be removed for fast cleaning. High Magnetic Strength: Efficiently captures and holds ferrous contaminants. Stainless Steel Construction: Durable, corrosion-resistant design for long-term use. Perfect for Food Industry: Ensures product purity and meets hygiene standards. |
Hopper Magnetic GratePrecise Metal Detection: Effectively captures ferrous metal contaminants in hopper systems. Robust and Durable: Designed for heavy-duty use in industrial applications. Easy Installation: Can be quickly integrated into existing hopper setups. Efficient Material Flow: Maintains smooth and uninterrupted material processing. |
How a magnetic grate separator works
A magnetic grate works by placing high-intensity magnetic rods directly in your material’s gravity flow path. As powder or granules pass through the grate, ferrous contamination is attracted to and held on the rod surfaces. Clean material continues downstream, while trapped metal remains in place until it is removed during cleaning. You don’t need power or controls, just proper placement, correct bar spacing, and routine cleaning to keep your process protected and efficient.
Features of the grid magnet
● Long-lasting: Lifetime Guarantee of Permanent Magnet Strength
● High surface gauss: Less than 1% magnetic loss in 100 years
● Non-pollution: pharmaceutical, food grade, and 3A dairy metal finishes available
● Low energy consumption: Low maintenance costs
● Finest of Magnetic Materials used, meeting IMA/MMPA
Basic Parameters of the hopper magnet
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| Diameter | Height | Diameter of rods | Gauss |
| 92 | 75 | 22 | 2500 |
| 8000 | |||
| 10000 | |||
| 12000 | |||
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| Diameter | Height | Diameter of the rod | Gauss |
| 138 | 80 | 22 | 2500 |
| 8000 | |||
| 10000 | |||
| 12000 | |||
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| Diameter | Height | Diameter of the rod | Gauss |
| 180 | 80 | 22 | 2500 |
| 8000 | |||
| 10000 | |||
| 12000 | |||
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| Diameter | Height | Diameter of the rod | Gauss |
| 230 | 80 | 22 | 2500 |
| 8000 | |||
| 10000 | |||
| 12000 | |||
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| Diameter | Height | Diameter of the rod | Gauss |
| 280 | 80 | 22 | 2500 |
| 8000 | |||
| 10000 | |||
| 12000 | |||
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| Diameter | Height | Diameter of the rod | Gauss |
| 310 | 80 | 22 | 2500 |
| 8000 | |||
| 10000 | |||
| 12000 | |||
For more information, please contact us.
Applications of the grate magnetic separator
Magnetic grates are widely used in industrial applications where ferrous contamination must be removed from gravity-fed materials. They are typically installed in hoppers, chutes, or inlet points and are suitable for powders, granules, and regrind materials. Commonly used in plastics processing, food production, chemical, pharmaceutical, and mineral industries, magnetic grates capture tramp iron before materials enter extruders, injection molding machines, mixers, or packaging equipment. This helps protect downstream equipment, reduce product contamination, and improve overall process reliability and product quality.
Easy-Clean Magnetic Grate vs Standard Magnetic Grate
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Comparison Aspect |
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Easy-Clean Magnetic Grate |
Standard Magnetic Grate |
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Cleaning method |
Pull-out magnetic core / drawer-type / quick-release design |
Manual wiping of magnetic rod surfaces |
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Direct contact with metal debris |
Minimal or no direct contact |
Direct contact required |
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Cleaning time |
A few minutes |
10–30 minutes or longer |
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Production downtime |
Short |
Long |
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Cleaning safety |
High (reduced risk of cuts from sharp metal) |
Lower (sharp metal debris exposure) |
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Cleaning frequency |
Suitable for high-frequency cleaning (per shift/daily) |
Frequent cleaning is labor-intensive |
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Suitability for continuous production |
Highly suitable |
Can interrupt production |
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Typical structure |
Pull-out core / drawer-type / quick-release |
Fixed, welded grate structure |
Our advantages
Overall SS304 or SS316 Stainless Steel Structure. Solid, Durable, Acid- and Alkali-Resistant
The welding technology at theconnection between the magnetic rod and the stainless steel plate is exquisite.
Super strong magnetic force. Iron removal issues can be easily resolved.
Laser cutting technology ensures that the gaps in the precision work are flat and smooth.
Our packaging
To ensure every Magnetic Grill arrives in perfect condition. GME applies a protective, export-grade packaging standard across all magnetic grates. Each unit is individually wrapped with anti-scratch and anti-moisture materials, securely fixed to prevent movement, and packed in reinforced cartons or wooden cases for long-distance shipment. This packaging method protects the magnetic assembly, stainless-steel surface, and pull-out structure during handling and transport, giving you confidence that the product is ready for installation upon arrival.
Why choose us?
| Do You Ever Encounter This Problem? | VS | GME Can Help You Solve This |
| Using cheap recycled materials compromises product quality, resulting in weak magnetism and demagnetization issues. | Compare materials | GME magnets are crafted from high-quality materials that meet international standards, ensuring stable magnetic properties and resistance to demagnetization for up to 20 years. |
| Long lead times and unreliable delivery schedules? Delayed deliveries causing losses for your company? | Compare delivery times | We maintain an ample stock of materials, enabling fast delivery within one week for orders up to 100 tons. |
| Poor magnetic steel performance? Insufficient magnetic force in the magnetic rods? Not meeting your requirements? | Compare the magnetic force | We utilize high-performance neodymium-iron-boron, achieving a maximum performance of N52 with a super-strong magnetic force, reaching up to 14,000 Gauss. |
| Rough product surface, lacking gloss, and peeling and rusting after a short period of use? | Compare polishing quality | The magnets undergo 3-5 times of manual and mechanical polishing, and electrolytic polishing using SUS304 and 316 stainless steel. |
| Short product lifespan, with the surface turning black and powdering within a year? | Compare lifespan | They pass the 96-hour salt spray test, are safe and environmentally friendly, and have a long service life. |
FAQ
01. What is a magnetic grate used for?
02. What is the difference between a magnetic grate and a hopper magnet?
03. Will a magnetic grate affect material flow or cause bridging?
04. How often does a magnetic grate need to be cleaned?
05. Is an easy-clean magnetic grate worth it?
06. What magnetic strength should I choose?
Great Magtech (Xiamen) Electric Co., Ltd is one of the most experienced hopper magnets manufacturers and suppliers in China. Welcome to wholesale hopper magnets from our factory.
extrusion hopper magnets, Grate Magnets, Grate Magnets in Housing , Magnetic Grill , Grate Magnets , Magnetic Grate , Magnetic Grids , Magnetic Grate Separators