{"title":"Underwater Magnets","description":null,"products":[{"product_id":"neodymium-ring-magnet-75mm-od-x-8mm-id-x-15mm-h-i-multi-poled-rubber-coated","title":"Rubber Coated Neodymium Ring Magnet - 75mm (OD) x 8mm (ID) x 15mm (H) I 6 Multi-Poled","description":"\u003cp data-start=\"67\" data-end=\"380\"\u003eThis Neodymium Ring Magnet combines strength and versatility in a compact design, making it an ideal choice for various applications. With an outer diameter of 75mm, an inner diameter of 8mm, and a height of 15mm, this magnet is perfectly sized for use in industrial, commercial, or DIY projects.\u003c\/p\u003e\n\u003cp data-start=\"382\" data-end=\"762\"\u003eFeaturing 6 multi-poled magnetic configurations, this ring magnet provides a powerful hold, ensuring it stays securely in place. The rubber-coated exterior enhances durability while protecting surfaces from scratches and damage, making it suitable for both indoor and outdoor use. This coating also helps to reduce the risk of chipping, extending the life of the magnet.\u003c\/p\u003e\n\u003cp data-start=\"764\" data-end=\"1070\"\u003eWhether you need a strong fastening solution, a component for magnetic assemblies, or a creative tool for crafts and displays, this neodymium ring magnet delivers exceptional performance. With its robust magnetic strength and practical design, it’s an excellent addition to your toolkit or workspace.\u003c\/p\u003e\n\u003cp data-start=\"1072\" data-end=\"1260\" data-is-last-node=\"\"\u003eApplications: Ideal for use in magnetic mounts, displays, sensor applications, and various engineering projects, this magnet is a versatile choice for both professionals and hobbyists.\u003c\/p\u003e","brand":"Frenergy Magnets","offers":[{"title":"Default Title","offer_id":44785446191236,"sku":"93000R","price":322.96,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0384\/3103\/1428\/files\/28.png?v=1752623323"},{"product_id":"neodymium-ring-magnet-75mm-od-x-8mm-id-x-15mm-h-i-multi-poled-i-plastic-coated","title":"Black Plastic Coated Neodymium Ring Magnet - 77mm (OD) x 8mm (ID) x 17mm (H) I 6 Multi-Poled","description":"\u003cp\u003eThis high-strength Neodymium Ring Magnet (N45) features an outer diameter of 77mm, an inner diameter of 8mm, and a height of 17mm. It is axially magnetised with a 6-multipole configuration, enhancing its efficiency in specialised applications. The black plastic coating provides durability, corrosion resistance, and a smooth surface for easy handling.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eIdeal for Prawn Farming \u0026amp; Artemia Separation\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis neodymium ring magnet is widely used in prawn farms to efficiently separate Artemia (brine shrimp) from their casings. Its strong multi-poled magnetic field attracts and retains non-nutritious cyst shells, ensuring a cleaner and higher-quality feed for aquatic species.\u003c\/p\u003e\n\u003cp\u003eDesigned for harsh environments, the protective plastic coating enhances longevity by shielding the magnet from moisture and chemical exposure. Whether used in hatcheries or large-scale aquaculture, this magnet provides a reliable, non-invasive solution for improving feed quality and reducing waste.\u003c\/p\u003e\n\u003ch3 data-end=\"570\" data-start=\"535\"\u003e\u003cstrong data-end=\"568\" data-start=\"539\"\u003eRough Pull Force Estimate\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-end=\"797\" data-start=\"571\"\u003eFor a single-pole, axially magnetised neodymium ring magnet of similar size (without multi-pole magnetisation), the pull force would typically range from 80–120 kg when in direct contact with a thick ferrous surface.\u003c\/p\u003e\n\u003cp data-end=\"1089\" data-start=\"799\"\u003eHowever, because this magnet is multi-pole, the force is distributed across multiple poles instead of being concentrated at one surface. This generally reduces the direct pull force but improves lateral gripping strength and efficiency in applications like Artemia separation.\u003c\/p\u003e\n\u003ch4 data-end=\"1123\" data-start=\"1091\"\u003eEstimated Pull Force:\u003c\/h4\u003e\n\u003cul data-end=\"1448\" data-start=\"1124\"\u003e\n\u003cli data-end=\"1220\" data-start=\"1124\"\u003eDirect contact with a thick steel plate: ~50–80 kg (adjusted for multi-pole effect).\u003c\/li\u003e\n\u003cli data-end=\"1318\" data-start=\"1221\"\u003ePull force at a small air gap (1-2mm): ~30–50 kg (plastic coating increases the gap).\u003c\/li\u003e\n\u003cli data-end=\"1448\" data-start=\"1319\"\u003eShear force (lateral strength for holding\/sliding applications): Potentially higher due to multiple poles improving grip.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Frenergy Magnets","offers":[{"title":"Default Title","offer_id":44785446224004,"sku":"93000","price":330.22,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0384\/3103\/1428\/files\/27.png?v=1752623321"}],"url":"https:\/\/frenergy.com.au\/collections\/underwater-magnets.oembed","provider":"Frenergy Magnets","version":"1.0","type":"link"}