Top 10 Hopper Magnet Manufacturers in the World 2026

Are you looking for a reliable Hopper Magnet Manufacturer for plastic processing, food production, pharmaceutical powders, chemicals, minerals, or other free-flowing materials? Do you need a hopper magnetic separator that can remove ferrous contamination while protecting injection molding machines, extruders, mixers, hoppers, and other downstream equipment? Or are you comparing global suppliers for a custom-size, high-intensity, food-grade, easy-clean, or high-temperature Hopper Magnet?

If the answer is yes, then choosing an experienced manufacturer with proven Hopper Magnet engineering capabilities can make a major difference. Hopper Magnets are widely used in plastic processing and injection molding, food and grain processing, pharmaceutical production, chemical processing, mineral and ceramic applications, and other bulk-material handling processes. The right magnetic solution can help remove iron contamination, protect expensive equipment, maintain product purity, and reduce avoidable production interruptions. Below, we present Top 10 Hopper Magnet Manufacturers in the World 2026, comparing their headquarters, Hopper Magnet configurations, application strengths, customization capabilities, and suitability for different global buyers.

The List of Hopper Magnet Brands in the World

MAG-SPRING

Established: 2003

Headquarters: Ningbo, Zhejiang, China

Hopper Magnet Offerings:

• Hopper Grate Magnet
• Easy-Clean Hopper Grate Magnet
• Baffle-Equipped Hopper Grate Magnet
• High-Temperature Hopper Grate Magnet

Company Overview: MAG-SPRING is a China-based manufacturer of permanent magnets and magnetic separation systems with a strong focus on customized industrial magnetic solutions for international customers. Its Hopper Grate Magnet is designed for installation inside hoppers to capture ferrous contamination from free-flowing materials and is documented for food processing, plastics, chemical engineering and pharmaceutical applications. The company offers SS304 or SS316 construction, NdFeB, ferrite or SmCo magnet options, different surface treatments, food-grade welding, adjustable magnetic strength and custom dimensions, allowing global buyers to specify the separator according to material, temperature, hopper geometry and hygiene requirements. For overseas OEMs, manufacturers, distributors and engineering companies, this makes MAG-SPRING suitable for projects where a standard off-the-shelf Hopper Magnet does not fully match the production line. The company also states that it serves customers worldwide and provides customized magnetic solutions, which is particularly relevant for buyers seeking an international Hopper Magnet Manufacturer and Supplier rather than a local-only source.

Company Advantages: MAG-SPRING combines magnetic material selection, separator manufacturing and customized engineering, allowing international buyers to develop Hopper Magnet solutions around their actual material and installation conditions. Its global-oriented production model and customization capabilities can help buyers address different hopper sizes, magnetic-strength requirements, temperatures, sanitary specifications and production environments.

Suitable Customer Groups:

• Food and ingredient processors
• Plastic manufacturers and recyclers
• Pharmaceutical manufacturers
• Chemical and powder processors
• Industrial equipment OEMs and distributors
• Global buyers requiring custom magnetic separation equipment

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SOLLAU

Established: 2011

Headquarters: Velký Ořechov, Czech Republic

Hopper Magnet Offerings:

• Standard Hopper Magnet for injection molding machines
• Flanged Hopper Magnet
• Easy-Clean Hopper Magnet
• High-Intensity Hopper Magnet

Company Overview: SOLLAU specializes in magnetic separation and has developed a particularly clear Hopper Magnet application for injection molding machines. Its hopper separators are designed to remove ferromagnetic contamination from regranulates, crushed plastics, plastic crumb and rejected molded parts before the material reaches processing equipment. The company documents neodymium-based solutions, easy-clean construction, custom dimensions and magnetic induction up to 13,500 Gauss for its hopper range, while its flanged configuration is designed to direct material toward the magnetic tubes and reduce the possibility of contaminated material bypassing the separator. SOLLAU also provides material testing and states that it can adapt the separator's dimensions and design to customer requirements. For international plastic processors, the value is therefore not limited to purchasing a magnetic grid; the manufacturer can help evaluate the material, choose a configuration and integrate the separator into an injection molding hopper.

Company Advantages: SOLLAU has a strong specialization in magnetic separation and provides dedicated solutions for injection molding hopper applications. Its combination of high-intensity neodymium magnets, easy-clean designs, testing and dimensional customization is useful for plastic processors that need both contamination control and practical maintenance.

Suitable Customer Groups:

• Injection molding companies
• Plastic recycling companies
• Plastic extrusion manufacturers
• Automotive plastic processors
• OEM equipment manufacturers

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Greenwood Magnetics

Established: 1948

Headquarters: Rochdale, Lancashire, United Kingdom

Hopper Magnet Offerings:

• Mobile Hopper Magnet
• Fixed Single-Tube Hopper Magnet
• Easy-Clean Double-Row Hopper Magnet
• Height-Adjustable Mobile Hopper Magnet

Company Overview: Greenwood Magnetics has a long history in magnetic separation and places particular emphasis on hygienic and bespoke magnetic equipment for the food industry. Its Mobile Hopper Magnet is manufactured from 316 stainless steel to food-quality standards and is designed for batch-processing environments where the separator may need to move between different process locations. Greenwood documents fixed single-tube and easy-clean double-row configurations, adjustable height, interchangeable grids and magnetic tube spacing selected according to the product and flow rate. Beyond manufacturing, the company provides in-house design and fabrication, magnet testing, repair, certification and ongoing support, creating an end-to-end service model for food manufacturers that need more than a standard magnetic grid. Its broader magnetic services also extend into pharmaceutical, powder handling, plastics, recycling and other sectors, making it relevant to global buyers looking for a bespoke Food Grade Hopper Magnet Manufacturer.

Company Advantages: Greenwood's strongest differentiation is its focus on hygienic, application-specific magnetic equipment and in-house fabrication rather than generic magnetic components. Its ability to combine design, manufacturing, testing, repair and ongoing support can simplify supplier management for international food and pharmaceutical customers.

Suitable Customer Groups:

• Food processing companies
• Meat and vegetable processors
• Pharmaceutical manufacturers
• Powder and ingredient processors
• Recycling and plastics companies

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Jaykrishna Magnetics Pvt. Ltd.

Established: 1978

Headquarters: Ahmedabad, Gujarat, India

Hopper Magnet Offerings:

• Round Hopper Magnet
• Square Hopper Magnet
• High-Temperature Hopper Magnet
• Special-Size Hopper Magnet

Company Overview: Jaykrishna Magnetics provides Hopper Magnets for applications ranging from rice and flour mills to cattle feed, blow molding, extrusion, chemical and pharmaceutical processing. Its official Hopper Magnet page identifies round and square configurations, permanent magnetic materials including ferrite and rare-earth options, stainless-steel construction and special-size solutions, with high-temperature versions available for demanding applications. This makes the company particularly relevant to buyers who need a straightforward hopper-mounted magnetic filter that can be matched to the physical shape of their hopper rather than a complex automated separation system. With manufacturing and export experience in magnetic and vibratory equipment, Jaykrishna can also support buyers that are sourcing magnetic separation equipment as part of a broader processing project.

Company Advantages: Jaykrishna offers a practical combination of standard round and square Hopper Magnet formats with options for material, construction and temperature requirements. Its established export orientation and broader magnetic-equipment manufacturing capabilities can be useful for international industrial buyers that need a supplier familiar with complete processing environments.

Suitable Customer Groups:

• Rice mills and flour mills
• Cattle feed manufacturers
• Plastic injection and extrusion companies
• Chemical manufacturers
• Pharmaceutical processors

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Star Trace

Established: 1998

Headquarters: Chennai, Tamil Nadu, India

Hopper Magnet Offerings:

• Round Grill Hopper Magnet
• Rectangular & Square Grill Hopper Magnet
• Self-Cleaning Hopper Magnet

Company Overview: Star Trace develops and manufactures magnetic separation equipment for a wide range of process industries, and its Hopper Magnet range is built around stainless-steel magnetic tubes containing ferrite or rare-earth magnetic elements. The company offers round as well as rectangular and square configurations, while its self-cleaning design is intended to simplify removal of captured ferrous contamination. Star Trace also documents stainless-steel 304/316 construction, customized dimensions and shapes, making the equipment adaptable to different hopper arrangements. Its application coverage is unusually broad for Hopper Magnets, including food products such as sugar, coffee, tea, grains, flour and spices as well as plastic, chemical, ceramic, mineral, pigment, refractory and pharmaceutical materials. For international engineering buyers, the company's broader fabrication, installation and turnkey project capabilities can be useful when a Hopper Magnet needs to be incorporated into a larger processing system.

Company Advantages: Star Trace combines Hopper Magnet manufacturing with wider process-equipment and project capabilities, giving buyers access to more than a standalone magnetic component. Its broad application coverage and custom grill configurations are particularly useful when material type, hopper shape or production environment varies significantly from one project to another.

Suitable Customer Groups:

• Food and grain processors
• Mineral and ceramic processors
• Plastic manufacturers
• Chemical and pharmaceutical companies
• Engineering contractors and project integrators

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Linux Magnetics

Established: 2008

Headquarters: Ahmedabad, Gujarat, India

Hopper Magnet Offerings:

• Round Hopper Magnet
• Square Hopper Magnet
• Custom-Size Hopper Magnet
• High-Flux Hopper Magnet

Company Overview: Linux Magnetics positions its Hopper Magnet as a magnetic filtering device for hopper-fed injection molding, blow molding, extrusion and bulk-material applications. Its official product information describes permanent magnets sealed inside non-magnetic tubes to generate high magnetic flux density while removing small ferrous particles from free-flowing powders and granules. The company specifically identifies applications in plastics, food, chemicals and minerals and states that its Hopper Magnets can be designed to fit different hopper sizes. This gives Linux Magnetics a practical position for buyers who need a customized magnetic filter around existing production equipment rather than a large standalone separation machine. Its wider manufacturing portfolio and turnkey engineering experience can also support customers whose Hopper Magnet requirement forms part of a larger magnetic or vibratory processing project.

Company Advantages: Linux Magnetics focuses on practical hopper-fed magnetic filtration and provides customization around hopper dimensions and application requirements. Its broader engineering and manufacturing capabilities can also help industrial customers coordinate Hopper Magnet requirements with other separation or material-handling equipment.

Suitable Customer Groups:

• Plastic injection molding companies
• Blow molding and extrusion manufacturers
• Food and grain processors
• Chemical processors
• Mineral-processing companies

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Power Magnetronics

Headquarters: Ahmedabad, Gujarat, India

Hopper Magnet Offerings:

• Low-Power Hopper Magnet — 2,500 Gauss
• Medium-Power Hopper Magnet — 6,000 Gauss
• High-Power Hopper Magnet — 10,000–11,000 Gauss
• Double- and Triple-Stage Hopper Magnet Grids

Company Overview: Power Magnetronics takes a more specification-oriented approach to Hopper Magnets by separating its range according to magnetic strength and providing different grid arrangements for different processing requirements. Its official product page documents low-, medium- and high-power Hopper Magnets, with high-power versions reaching 10,000–11,000 Gauss, while double- and triple-stage grids can be designed for applications requiring additional magnetic exposure. The company also states that round, square and rectangular shapes can be manufactured according to customer requirements and that polished, fully welded construction can be supplied for food-grade or pharmaceutical applications. Its documented applications include flour, minerals, cattle feed, rice, plastics, pigments, chemicals, sugar and pharmaceuticals, giving buyers several routes for adapting a Hopper Magnet to a specific production line.

Company Advantages: Power Magnetronics makes magnetic-strength selection a central part of its Hopper Magnet offering, which can help buyers compare separation requirements rather than selecting equipment only by physical size. Its custom shapes, multi-stage grid options and application engineering support are useful for manufacturers with non-standard installation or contamination conditions.

Suitable Customer Groups:

• Flour and rice mills
• Food and sugar processors
• Plastic processors
• Mineral and pigment industries
• Chemical and pharmaceutical manufacturers

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Bhagwandas Magnet & Sons Co.

Headquarters: Ahmedabad, Gujarat, India

Hopper Magnet Offerings:

• Round Hopper Magnet
• Square Hopper Magnet
• Special-Size Hopper Magnet
• SS304/316 Hopper Magnet

Company Overview: Bhagwandas Magnet & Sons focuses its Hopper Magnet application on protecting hopper-fed processing equipment from iron contamination. Its official product information describes high-coercivity permanent magnets sealed in non-magnetic tubes and identifies round and square standard sizes together with special-size designs. The company also specifies neodymium magnet material and stainless-steel construction options, including SS304/316 versions for applications such as dyes and chemicals. Its documented customer sectors include plastic processing, rice mills, flour mills, cattle feed and guar gum, giving it a practical focus on industries where powders, granules and pellets move through gravity-fed hoppers. For buyers looking for a relatively straightforward Hopper Magnet Supplier with customization around hopper dimensions, the company's product structure is easy to evaluate.

Company Advantages: Bhagwandas provides a simple, application-focused Hopper Magnet range with round, square and special-size options that can be matched to different hopper geometries. Its neodymium-based construction and stainless-steel options give buyers flexibility when stronger magnetic filtration or more hygienic construction is required.

Suitable Customer Groups:

• Plastic processing companies
• Rice and flour mills
• Cattle feed manufacturers
• Guar gum processors
• Dyes and chemical manufacturers

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Novanative Plastix Solutions

Headquarters: New Delhi, India

Hopper Magnet Offerings:

• Double-Layer Hopper Magnet
• Round Hopper Magnet
• Square Hopper Magnet
• Rectangular Hopper Magnet

Company Overview: Novanative is particularly focused on plastic-processing applications, making its Hopper Magnet range relevant to injection molding, blow molding and extrusion operations. Its official Hopper Magnet information states that the company manufactures and supplies Hopper Magnets and provides assembled units ready for installation in molding-machine hoppers, with multiple shapes and configurations available according to hopper dimensions. The company documents double-layer, round, square and rectangular configurations and also states that custom Hopper Magnets can be manufactured to customer specifications. This application focus gives Novanative a different positioning from manufacturers primarily serving bulk-mineral separation: its Hopper Magnet is closely connected with the day-to-day protection of plastic processing machinery from nuts, nails, iron pieces and other ferrous contamination.

Company Advantages: Novanative's strength is its close connection to plastic injection molding, extrusion and blow molding rather than treating the Hopper Magnet as a general-purpose industrial separator. Its ready-to-install configurations and custom sizing can help plastic processors integrate magnetic protection into existing machinery with less redesign work.

Suitable Customer Groups:

• Injection molding companies
• Plastic extrusion manufacturers
• Blow molding companies
• Plastic OEMs and machinery users
• Plastic processors handling recycled materials

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OLMAK MAKİNE

Headquarters: Başakşehir, İstanbul, Türkiye

Hopper Magnet Configurations:

• Hopper Magnet at Dryer Outlet
• Hopper Magnet at Mixer Outlet
• Hopper Magnet in Vacuum Conveying Lines
• Hopper Magnet at Machine Throat

Company Overview: OLMAK MAKİNE approaches the Hopper Magnet from the perspective of plastic-processing line protection rather than as a standalone magnetic-product catalog. Its officially documented Hopper Magnet is manufactured by OLMAK MAKİNE and is designed to capture ferrous particles from granules, regrind, masterbatch and additives before they reach screws, barrels and molds. The company identifies installation positions including dryer outlets, mixer outlets, vacuum conveying lines, feed lines and machine throats, while also emphasizing applications in injection molding, extrusion, compounding, drying, mixing and dosing. This positioning is especially relevant to plastic manufacturers using regrind, because recycled material can carry metal contamination from previous grinding and handling stages. OLMAK also provides installation, commissioning, operator training, technical service and spare-parts support, including support for export customers, making the Hopper Magnet part of a wider plastic auxiliary-equipment and process-support service.

Company Advantages: OLMAK's advantage is its direct understanding of plastic processing lines and the locations where ferrous contamination can damage screws, barrels, molds and other equipment. Its combination of Hopper Magnet supply, line integration, commissioning and after-sales service is useful for plastic manufacturers that want the magnetic protection to fit into an existing production process.

Suitable Customer Groups:

• Injection molding manufacturers
• Plastic extrusion companies
• Compounding plants
• Plastic recycling and regrind processors
• Manufacturers using central material conveying systems

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FAQ About Hopper Magnets

1. Can a Hopper Magnet protect an injection molding screw and mold from metal contamination?

Yes, when the contamination is ferrous and the separator is correctly positioned. OLMAK MAKİNE specifically describes its Hopper Magnet as a passive protection element installed in the material flow before material reaches the screw and mold, while SOLLAU describes its hopper separator as protecting injection molding equipment from ferromagnetic particles. :contentReference[oaicite:16]{index=16} If the contamination includes non-ferrous metals or stainless-steel particles that are not sufficiently magnetic, a Hopper Magnet alone may not provide complete metal detection and separation.

2. Is a higher Gauss rating always better for a Hopper Magnet?

No. Magnetic strength is only one part of the selection process. A higher Gauss value can be useful for fine or difficult-to-capture ferrous particles, but the final result also depends on the magnetic circuit, tube arrangement, distance between the material and magnetic surface, material flow and contamination characteristics. The practical approach is to match magnetic strength and geometry to the material instead of simply choosing the highest advertised Gauss rating. MAG-SPRING, for example, documents Hopper Grate Magnet options across a range of magnetic strengths and materials rather than presenting one strength as suitable for every application.

3. What should I do if my Hopper Magnet will operate at high temperature?

Temperature should be specified before ordering. Neodymium magnets have temperature limitations that vary by grade and construction, so a hopper dryer or another hot process may require a different magnetic material or high-temperature design. This is a real concern for injection molding users: an industry discussion in 2026 described a buyer evaluating neodymium versus ferrite magnets for a hopper dryer operating around 150°C. :contentReference[oaicite:12]{index=12} For a high-temperature project, ask the manufacturer for the actual maximum working temperature of the complete Hopper Magnet, not just the nominal magnet material.

4. How often should I clean a Hopper Magnet?

There is no universal cleaning interval because it depends on contamination loading and production conditions. If a Hopper Magnet is installed after a granulator or is processing heavily recycled material, inspection may need to be more frequent. The important point is to prevent excessive accumulation from reducing effective magnetic exposure or making cleaning unnecessarily difficult. Easy-clean designs can reduce the labor associated with routine maintenance; SOLLAU's TM and TM FL designs, for example, allow magnetic cores to be withdrawn from the stainless-steel tubes so captured particles can fall away during cleaning. :contentReference[oaicite:13]{index=13}

5. What is the difference between a Hopper Magnet and a magnetic grate?

The terms often overlap. A magnetic grate is a grid of magnetic tubes used to capture ferrous contamination from flowing material, while a Hopper Magnet generally describes a magnetic grate or magnetic grid configured specifically for installation in a hopper. MAG-SPRING explicitly explains that grate magnets can be installed inside hoppers and that the same type of equipment may therefore be called a Hopper Magnet or hopper dryer magnet depending on the application.

Conclusion

Need a Hopper Magnet that fits your material, hopper dimensions and production conditions instead of a one-size-fits-all magnetic grid? The manufacturers above cover different approaches, from plastic injection molding protection and food-grade magnetic filtration to custom industrial Hopper Magnets, high-intensity magnetic grids and integrated plastic-processing solutions. The right choice depends on your material, flow rate, contamination level, temperature, hygiene requirements and maintenance expectations.

Before you make a purchasing decision, compare the technical specifications carefully and ask manufacturers for drawings, magnetic-strength information, customization options and application guidance. If you are looking for a global Hopper Magnet Manufacturer capable of supporting custom magnetic separation requirements, you can also contact MAG-SPRING to discuss your material, hopper dimensions and production conditions and request a suitable Hopper Magnet solution.

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