Neodymium Magnetic Grate and Magnet Grid – Powerful, Sanitary Ferrous Removal

In bulk material processing, the presence of tramp iron can damage expensive equipment, contaminate final products, and lead to costly recalls. The neodymium magnetic grate and magnet grid provides a highly effective, maintenance‑free solution for capturing ferrous contaminants from dry powders, granules, and pellets. This grid consists of multiple rows of seamless stainless steel tubes, each housing a powerful neodymium‑iron‑boron (NdFeB) magnet core arranged in a Halbach array to maximize surface magnetic flux. The result is a deep, uniform field (up to 12,000 Gauss) that attracts and holds ferrous particles as small as 30 microns, including weakly magnetic work‑hardened stainless steel. The entire assembly is fabricated from 316L stainless steel with full‑penetration TIG welding and electropolishing (Ra ≤ 0.4 μm), ensuring a sanitary, corrosion‑resistant surface that meets FDA and food‑grade requirements. Our neodymium magnetic grate and magnet grid is available in standard sizes (from 150×150 mm to 1200×1200 mm) and can be configured with single, double, or triple layers to match your flow rate and separation efficiency needs. The grid can be installed in gravity chutes, hoppers, pneumatic conveyors, or liquid pipelines using optional flanges, hinges, or quick‑release handles for easy cleaning. We also offer high‑temperature grades (N48SH up to 150°C) and custom tube spacing (25 mm, 38 mm, 50 mm) to optimize capture for your specific material. Manufactured from 100% virgin rare‑earth materials (purity ≥95%) in our vertically integrated IATF 16949‑certified facility, every unit is 100% gauss‑mapped and supplied with a magnetic profile report. With 20+ years of magnetic engineering experience, we can design custom grids for abrasive, corrosive, or food‑contact applications.

High‑Intensity Magnetic Field

Our neodymium magnetic grate and magnet grid uses N42SH or N48SH magnets to achieve surface fields of 10,000‑12,000 Gauss. The deep field penetrates material streams, capturing ferrous particles that pass between the tubes.

Sanitary, Food‑Grade Construction

316L stainless steel tubes are electropolished to a smooth, crevice‑free finish. Full‑penetration welds and passivation ensure no bacteria or product buildup, meeting FDA 21 CFR and EC1935 standards.

Customizable Configuration

Choose tube diameter (25 mm or 32 mm), spacing (25‑50 mm), number of layers (1‑3), and frame size. Optional hinged or lift‑out designs allow quick cleaning without tools.

Our neodymium magnetic grate and magnet grid is designed and manufactured in our vertically integrated facility, where we control both magnet production and stainless steel fabrication. The neodymium magnets are sintered from 100% virgin rare‑earth materials (purity ≥95%) with precise orientation, then coated with Ni‑Cu‑Ni to prevent corrosion. The tubes are seamless 316L, electropolished for hygiene, and the frame is fabricated with full‑penetration TIG welding. Each grid is 100% tested for magnetic field strength using a Gauss meter array across the entire surface. We also perform weld inspections (dye penetrant), pressure tests (for liquid applications), and salt‑spray corrosion tests (ASTM B117) on sample batches. All products are supplied with a certificate of compliance, magnetic profile report, and material test certificates. Our IATF 16949 and ISO 9001 systems ensure consistent quality for food, pharmaceutical, and industrial OEMs.

Each magnetic grate is securely packed in a plywood crate with foam padding and internal bracing to prevent damage during transit. For large grids, we use custom steel frames for support. Lead times: standard sizes 15‑20 days; custom designs 25‑30 days. We provide full shipping documentation and can offer on‑site installation support for large orders.