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- act@mag-spring.com
Our Round grate magnetic separator provides high-intensity magnetic filtration for powders, granules, and bulk materials. Designed with strong neodymium magnets, this grid magnet efficiently captures fine ferrous contaminants, ensuring product purity and compliance for food, chemical, plastic, and pharmaceutical industries.
The grate magnetic separator is widely used in food processing, chemical powders, plastic pellets, pharmaceutical materials, and mineral production lines. Installed in hoppers, chutes, and pipelines, the grid magnet / magnetic grid effectively removes fine ferrous contaminants from free-flowing powders and granules, ensuring consistent product purity and equipment protection.
The grate magnet, also known as a grate magnetic separator, magnet grill, or magnetic grid, is one of the most widely used magnetic filtration solutions for capturing fine ferrous contamination in powders, granules, and free-flowing bulk materials. Whether installed inside a hopper, chute, pipeline, or feeding system, the grate magnet provides a high-efficiency method to prevent metal contamination, protect downstream equipment, and improve overall product purity.
Engineered for plastics, food, chemicals, mining, and pharmaceutical applications, MAG SPRING® grid magnets deliver reliable performance with strong neodymium magnetic bars, hygienic stainless-steel structures, and fully customizable designs for complex processing environments.
Metal contamination is a persistent challenge in bulk material handling systems. Fine ferrous particles—such as rust, scale, iron filings, worn machine parts, or stainless-steel fragments—can enter raw materials during conveying, grinding, mixing, or packaging.
A grate magnetic separator captures these particles at the earliest stage, ensuring:
Many international food safety guidelines recommend installing such magnetic grids in powder-processing lines.
MAG SPRING® grid magnets are constructed with high-power NdFeB magnetic tubes arranged in one or multiple layers. Materials flow freely around the magnetic rods, allowing fine ferrous particles to be captured with high efficiency.
Our magnetic grills are available in:
All designs are manufactured from food-grade stainless steel (304 / 316L) with fully welded, easy-clean structures suitable for demanding industrial environments.
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| Model Series | Magnetic Strength | Max Temp | Cleaning Type |
|---|---|---|---|
| Standard Series | 8,000 – 10,000 Gauss | 80°C (Standard) | Manual Wipe |
| High-Intensity | 12,000 – 14,000 Gauss | Up to 120°C | Manual Wipe |
| Easy-Clean | 8,000 – 11,000 Gauss | 80°C – 100°C | Slide-out Sleeves |
* Available in Square, Round, and Custom shapes for Hoppers and Chutes.
Custom Drawing Request →
| Parameter | Standard Values |
|---|---|
| Magnetic Strength | 25000–14000 Gauss |
| Rod Diameter | 16 / 19 / 22 / 25 mm |
| Grid Spacing | 30–50 mm |
| Material | SS304 / SS316L |
| Surface Treatment | Polished or sandblasted |
| Max Operating Temp | 80°C, 150°C, 250°C, 350°C optional |
| Standard Shapes | Round / Square / Rectangular |
| Optional | Waterproof welding, Teflon coating, strong NdFeB rods |
Experience the MagSpring® Difference: Our Grate Magnets are engineered with unique 0.1mm flatness control.
Watch our Precision Engineering Video to see how we achieve spatter-free, digital closed-loop welding for maximum durability
Our grill magnetic separator is engineered to handle a wide range of materials and environments:
This broad application range ensures that the grill magnet becomes a core component of your metal contamination control strategy.
Both round grid magnets and square / rectangular magnetic grids offer strong magnetic separation, but selection depends on installation space and material behavior:
If your equipment requires a special configuration, our custom magnets can be designed exactly to fit the dimensions and flow patterns of your processing line.
MAG SPRING® provides deep engineering customization:
If you need CAD drawings, flow calculations, or consultation for material behavior, our engineering team can support your project from start to finish.
Whether you’re a plastic processor, food manufacturer, or chemical plant engineer, our products help you achieve cleaner materials and higher production efficiency.
Q1: What materials can this magnet remove?
Fine ferrous metal, iron dust, scale, rust, and weakly magnetic stainless-steel particles.
Q2: How do I choose the right magnetic grid size?
Provide your hopper diameter, material flow rate, and powder characteristics. We will design the best configuration.
Q3: Are round grill magnets interchangeable with square grids?
Yes, but shape selection depends on the opening and installation space.
Q4: What Gauss level is recommended for food-grade materials?
Typically 10,000–12,000 Gauss for maximum efficiency.
Q5: Do you supply custom grid magnets for OEM equipment?
Yes. Over 50% of our customers request custom sizes, connections, weld types, and high-temperature versions.
Q6: How can I ensure my grill magnet meets food safety standards?
A: Installing a properly designed magnetic separator following industry-recognized guidelines, such as Government of Manitoba – Magnetic Separators in Food Processing , ensures optimal ferrous particle removal and compliance with HACCP regulations.
If you need a quotation, customized drawing, or technical evaluation, contact us anytime:
Email: act@mag-spring.com
Get a free consultation with our engineering team.
| Model | Diameter | H | Number of magnetic bars | Weight (kg) |
| SWMG-R100 | 100 | 40 | 2 | 0.9 |
| SWMG-R150 | 150 | 40 | 3 | 1.5 |
| SWMG-R200 | 200 | 40 | 4 | 2.5 |
| SWMG-R250 | 250 | 40 | 5 | 3.7 |
| SWMG-R300 | 300 | 40 | 6 | 5.5 |
| SWMG-R350 | 350 | 40 | 7 | 7.5 |
| SWMG-R400 | 400 | 40 | 8 | 10 |
| SWMG-R450 | 450 | 40 | 9 | 12.3 |
| SWMG-R500 | 500 | 40 | 10 | 15.5 |
Technical Note: Our grate magnets utilize high-grade Neodymium (NdFeB). To understand the flux density requirements for food safety, refer to the
Magnetic Separation Standards
overview on Wikipedia.
