Product Overview
Neodymium Iron Boron 13000 GS Magnetic Grids – Unmatched Strength for Critical Purity Applications
When product purity is non‑negotiable and even the smallest ferrous contaminant can lead to costly recalls or equipment damage, the neodymium iron boron 13000 GS magnetic grids deliver the highest commercially available surface magnetic field strength – 13,000 Gauss (measured at the tube surface). This exceptional intensity provides deep magnetic penetration, effectively capturing fine iron particles down to 20 microns and weakly magnetic contaminants such as work‑hardened stainless steel, rust flakes, and alloy debris that pass through standard 10,000‑12,000 GS grids. The neodymium iron boron 13000 GS magnetic grids are engineered using a Halbach array of N52SH sintered neodymium magnets – each produced from 100% virgin rare‑earth materials (purity ≥95%) with Ni‑Cu‑Ni triple coating for maximum corrosion resistance. The tubes are fabricated from seamless 316L stainless steel, electropolished to Ra ≤ 0.4 μm and TIG‑welded into a robust frame. This construction ensures sanitary, crevice‑free surfaces ideal for food, dairy, pharmaceutical, and chemical processing, while the high‑grade magnets maintain their strength even in mildly elevated temperatures (up to 150°C with SH grade). Our neodymium iron boron 13000 GS magnetic grids are available in a wide range of standard and custom sizes, from 150×150 mm to 1500×1500 mm, with tube diameters of 25 mm or 32 mm, and bar spacings from 25 mm to 50 mm. Single, double, triple, and quadruple layer configurations allow you to match the grid to your specific material flow rate and separation efficiency targets. For abrasive or corrosive materials, we offer optional wear‑resistant linings or specialized alloys. Every grid is 100% gauss‑mapped across its entire surface using a motorized Hall probe array, and we supply a comprehensive magnetic profile report with each shipment. With full in‑house manufacturing and IATF 16949/ISO 9001 quality systems, we guarantee consistent performance, full traceability, and fast lead times for demanding industrial applications.
Why 13,000 GS Makes the Critical Difference
Deeper Penetration & Smaller Particle Capture
At 13,000 Gauss, the neodymium iron boron magnetic grid generates a field that extends 35‑45 mm from the tube surface, capturing ferrous particles that would pass through lower‑intensity grids. This includes fine dusts, rust particles, and work‑hardened stainless steel fragments.
Superior Halbach Array Design
Our magnetic circuit uses a precision‑assembled Halbach array within each tube, concentrating flux on the surface where material contact occurs. This maximizes the effective field strength without increasing magnet volume, ensuring consistent 13,000 GS output.
Sanitary, Food‑Grade Construction
All tubes and frames are fabricated from 316L stainless steel with full‑penetration welding and electropolishing. The grid is FDA‑compliant, EC1935‑certified, and suitable for direct contact with dry and liquid food products.
| Model | Grid Size (mm) | Tube Diameter | Tube Spacing | Number of Layers | Magnet Grade | Surface Gauss (peak) | Housing Material |
|---|---|---|---|---|---|---|---|
| MG13‑250×250‑1 | 250 × 250 | 25 mm | 50 mm | 1 | N52SH | 13,000 | 316L SS |
| MG13‑400×400‑2 | 400 × 400 | 25 mm | 38 mm | 2 | N52SH | 13,000 | 316L SS |
| MG13‑600×600‑2 | 600 × 600 | 32 mm | 50 mm | 2 | N52SH | 13,000 | 316L SS |
| MG13‑800×800‑3 | 800 × 800 | 32 mm | 38 mm | 3 | N52SH | 13,000 | 316L SS |
| MG13‑1000×1000‑3 | 1000 × 1000 | 32 mm | 25 mm | 3 | N52SH | 13,000 | 316L SS |
Applications
Packaging & Logistics – Ready for Global Shipment
Each grid is securely packed in a heavy‑duty plywood crate with foam padding and internal bracing. For large assemblies, we use custom steel frames to prevent distortion during transit. Lead times: standard sizes 15‑20 days; custom designs 25‑30 days. We provide full shipping documentation and offer on‑site commissioning support for large orders.
FAQ
Q1: What is a Neodymium Iron Boron 13000 GS Magnetic Grid?
A1: It is a high-intensity magnetic separator consisting of multiple neodymium (NdFeB) magnetic rods arranged in a grid pattern inside a stainless steel frame. The "13000 GS" refers to its powerful surface magnetic field strength of 13,000 Gauss. These grids are installed in hoppers, chutes, or pipelines to extract ferrous contaminants from dry powders, granules, or liquids. They operate without electricity, making them an energy-free, low-maintenance filtration solution.
Q2: How does a 13000 GS Magnetic Grid work?
A2: As material (powder, granule, or liquid) flows through the grid, the intense 13000 GS magnetic field attracts and holds ferrous particles like iron filings and rust. These contaminants stick firmly to the magnetic tubes, while the clean material passes through. The grid is then removed for cleaning, where the captured ferrous debris is wiped or pushed off the rods. The process is based on the principle of magnetic attraction to ferromagnetic materials.
Q3: What materials are used in constructing a 13000 GS Magnetic Grid?
A3: The magnetic core is made of high-grade Neodymium Iron Boron (NdFeB), often N52 or N44H, to achieve the 13000 GS strength. This core is sealed inside a stainless steel tube (usually SUS304 or SUS316L) for protection, which is welded shut to be waterproof and durable. The entire grid is framed with stainless steel, offering resistance to corrosion and ensuring hygiene, especially for food and pharmaceutical applications.
Q4: What industries use 13000 GS Magnetic Grids?
A4: These powerful grids are widely used across industries where product purity is critical. Key applications include food processing (flour, sugar, spices), pharmaceuticals, plastics, chemicals, mining, and ceramics. They are installed to remove fine ferrous and paramagnetic contaminants from powders and granules, protecting downstream equipment like extruders and mills. They are also effective in liquid filtration for the chemical and oil & gas industries, helping to comply with HACCP and FDA standards.
Q5: What are the key selection and maintenance points for 13000 GS Magnetic Grids?
A5: Key selection factors: magnetic strength (confirm 13000 GS requirement), grid size (must cover the entire flow area), and operating temperature (standard ≤80°C, with high-temp options up to 350°C). Maintenance is simple: regularly remove the grid and wipe or blow off accumulated contaminants. The stainless steel construction makes cleaning easy and prevents rust. Consider an easy-clean design where the magnetic core can be withdrawn, allowing contamination to fall off automatically for faster cleaning.