Top 10 Hopper Magnet Manufacturers in the World

1.MAG SPRING

Foundation Year: 2003

Headquarters: Ningbo, Zhejiang, China

Company Full Profile：

MAG SPRING is a China-based manufacturer specializing in Hopper Magnets and magnetic separation systems for powders, granules, plastics, food, pharmaceutical, and other bulk materials. Its Hopper Grate Magnets are designed for installation in hoppers, bins, chutes, and processing equipment to efficiently remove ferrous contaminants. MAG SPRING provides high-strength magnetic solutions with customizable grate configurations, dimensions, stainless-steel construction, cleaning methods, and magnetic strength, making it a suitable partner for buyers seeking reliable Hopper Magnets and customized OEM magnetic separation solutions.

Main Products – Hopper Magnets：

• Hopper Grate Magnet
• Grate Magnet Filter
• 10,000GS Easy Cleaning Grate Magnet
• Auto Cleaning Grate Magnets

Suitable Customers：MAG SPRING is suitable for food processors, pharmaceutical manufacturers, chemical companies, plastics processors, powder and granule manufacturers, and industrial equipment integrators that require hopper-based magnetic separation. It is particularly suitable for buyers looking for customized hopper magnets, magnetic grate separators, or OEM magnetic separation systems for bulk-material processing.

Request a Quote

FAQs

1. Can a hopper magnet remove very fine iron particles?

Yes. High-intensity neodymium hopper magnets can capture very fine ferrous particles when the magnetic field is properly designed and the material passes close enough to the magnetic tubes. Some industrial hopper magnets are designed to capture particles down to micron-level sizes. However, the actual capture size depends on particle shape, material flow, magnetic field strength, and distance from the magnet, so testing with your actual material is recommended before purchasing.

2. Will a hopper magnet reduce my material flow rate?

It can if the magnetic tubes are too closely spaced or the grate does not provide enough open area. A properly designed hopper magnet should provide sufficient magnetic exposure while maintaining smooth material flow. When requesting a quotation, provide the hopper opening, material particle size, bulk density, and required throughput so the manufacturer can determine the appropriate tube spacing and grate configuration.

3. Why does material sometimes bridge or clog around the magnetic tubes?

Bridging can occur when the material has poor flowability, high moisture, irregular particle sizes, long plastic scraps, or when the magnetic tubes are installed too densely. The solution is not always a stronger magnet. The supplier may need to increase the spacing between tubes, change the grate configuration, increase the open area, or modify the hopper geometry. For injection molding applications, the material condition and hopper outlet should be checked together with the magnetic grate design.

4. Can I customize a hopper magnet to fit my existing hopper?

Yes. Many hopper magnet manufacturers can customize the frame diameter, width, height, number of magnetic tubes, tube spacing, flange, and installation method. Some manufacturers offer standard sizes while also adapting the overall design to the customer's hopper. Provide the hopper drawing or at least the opening dimensions, mounting dimensions, material type, and required throughput when requesting a quotation. :contentReference[oaicite:2]{index=2}

5. Can a hopper magnet protect an injection molding machine?

Yes. A hopper magnet can be installed before plastic material enters the screw and barrel to capture ferrous particles from virgin resin, regrind, crushed plastics, and rejected parts. This can help reduce the risk of ferrous contamination reaching downstream processing equipment. For injection molding, the magnet should be positioned where material can pass through the magnetic field without significantly restricting the feed rate. :contentReference[oaicite:5]{index=5}

Conclusion

After reviewing this ranked list of leading global hopper magnet and grate magnet manufacturers for 2026, you can match a supplier profile to your actual sourcing priority — whether that means a food-safety-certified sanitary grate magnet for a dairy or bakery hopper, a rare-earth grid built specifically for an injection-molding machine throat, or a factory-direct OEM hopper magnet for a bulk container order. Every listed manufacturer was cross-checked against company registration history, published certification records and long-term industry cooperation evidence to filter out unverified trading intermediaries. If you remain unsure whether a standard grate magnet, a self-cleaning rotary design or a custom-fabricated hopper magnet best fits your hopper geometry, gauss requirement or hygiene standard, bookmark this 2026 guide to shorten future supplier screening and avoid costly mismatches between magnet strength and material flow rate.

Request a Quote