--- product_id: 318634115 title: "N42H NdFeB Arc Segment OR18xIR14x45deg.x20mm Strong Motor Magnets for Generators Wind Turbine Rotor Neodymium Permanent Magnet 36mm Diameter 20mm Height 8 Pack" brand: "magerial" price: "R2975" currency: ZAR in_stock: true category: "Magerial" url: https://www.desertcart.co.za/products/318634115-n42h-ndfeb-arc-segment-or18xir14x45deg-x20mm-strong-motor-magnets-generators store_origin: ZA region: South Africa --- # Max Operating Temp 120°C Precision Arc Segments for OD36mm Ring N42H Grade NdFeB Rare Earth Magnet N42H NdFeB Arc Segment OR18xIR14x45deg.x20mm Strong Motor Magnets for Generators Wind Turbine Rotor Neodymium Permanent Magnet 36mm Diameter 20mm Height 8 Pack **Brand:** magerial **Price:** R2975 **Availability:** ✅ In Stock ## Summary > 🧲 Power Your Innovation with Precision & Heat-Resistant Strength! ## Quick Answers - **What is this?** N42H NdFeB Arc Segment OR18xIR14x45deg.x20mm Strong Motor Magnets for Generators Wind Turbine Rotor Neodymium Permanent Magnet 36mm Diameter 20mm Height 8 Pack by magerial - **How much does it cost?** R2975 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/318634115-n42h-ndfeb-arc-segment-or18xir14x45deg-x20mm-strong-motor-magnets-generators) ## Best For - magerial enthusiasts ## Why This Product - Trusted magerial brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Engineered Fit:** 8-piece arc segments form a seamless 36mm outer diameter ring, guaranteeing snug assembly and optimal flux. - • **Heat-Resistant Durability:** Withstands up to 120°C, perfect for high-temp environments without losing magnetic integrity. - • **Corrosion-Resistant Finish:** Triple-layer Nickel-Copper-Nickel coating delivers a sleek metallic shine and long-lasting protection. - • **Unmatched Magnetic Strength:** Diametrically magnetized N42H grade ensures powerful, reliable performance for your motor or generator projects. - • **Versatile DIY & Industrial Use:** Ideal for wind turbines, small generators, automotive parts, and cutting-edge scientific experiments. ## Overview This set of 8 diametrically magnetized N42H NdFeB arc magnets features a 36mm outer diameter and 20mm height, designed for assembling into a high-performance ring. Engineered for durability with a triple-layer nickel-copper-nickel coating and capable of operating at temperatures up to 120°C, these magnets deliver exceptional strength and precision for advanced motor, generator, and DIY applications. ## Description Set of 8 diametrically arc magnets, with the size of OD36*ID28*Height20mm. Grade N42H high temperature NdFeB rare earth permanent magnetic materials and the max working temperature is 120 degree centigrade. Magnetized in pair, 4 of them are with Pole S on the outer curves and the other 4 with Pole N on the inner curves, the segments can be used to form a ring of outer diameter 36mm and inner diameter 28mm, height 20mm. The magnets are with Nickel-Copper-Nickel triple coatings, which makes them with shiny metallic looking and well protected from corrosions. Perfect in DIY Creativity Development, Scientific Experiment, And Small Generator Parts, Automotive Parts. Hanlding Tips: NdFeB magnets are made from sintered powder. The basic feature is brittle. Proper handling requested. You can only Slide Off/On. Do keep distance between magnets or magnet and iron stuff. Do not drop on hard surfaces.DISCLAIMER This magnet set complies with the regulations and labeling requirements of the Consumer Product Safety Commission. In addition, in accordance with desertcart strong magnet policy. *Each magnet set complies with regulations and labeling requirements of the Consumer Product Safety Commission. In addition, in accordance with desertcart strong magnet policy, the flux between magnets is less than 50 kG2mm2. ## Features - [UNIQUE MAGNETIZING AND STRONG]: It is Magnetized Diametrically. 4 of them are with Pole S on the outer curves and the other 4 with Pole N on the outer curves. - [HIGH TEMPERATURE]: Grade N42H high temperature NdFeB rare earth permanent magnetic materials and the max working temperature is 120 degree centigrade. - [8 PIECES PACK] Set of 8 diametrically arc magnets, can be assemblied ring of OD36ID28Height20mm. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07N831KGG | | Brand Name | Magerial | | Color | Silver | | Customer Reviews | 4.4 4.4 out of 5 stars (144) | | Item Dimensions L x W x Thickness | 36L x 18W millimeters | | Item Thickness | 20 Millimeters | | Item Weight | 0.01 Ounces | | Manufacturer | HMME | | Material Type | Copper | | Model Number | ArcMagnets | | Number of Items | 8 | | Number of Pieces | 8 | | Part Number | ArcMagnets | | Shape | Round | | UPC | 754525931225 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Magerial - **Colour:** Silver - **Material:** Copper - **Product dimensions:** 36L x 18W millimeters - **Shape:** Round ## Images ![N42H NdFeB Arc Segment OR18xIR14x45deg.x20mm Strong Motor Magnets for Generators Wind Turbine Rotor Neodymium Permanent Magnet 36mm Diameter 20mm Height 8 Pack - Image 1](https://m.media-amazon.com/images/I/31IKQg2DlPL.jpg) ![N42H NdFeB Arc Segment OR18xIR14x45deg.x20mm Strong Motor Magnets for Generators Wind Turbine Rotor Neodymium Permanent Magnet 36mm Diameter 20mm Height 8 Pack - Image 2](https://m.media-amazon.com/images/I/41gTAOdADZL.jpg) ![N42H NdFeB Arc Segment OR18xIR14x45deg.x20mm Strong Motor Magnets for Generators Wind Turbine Rotor Neodymium Permanent Magnet 36mm Diameter 20mm Height 8 Pack - Image 3](https://m.media-amazon.com/images/I/31vyNlIjK8L.jpg) ![N42H NdFeB Arc Segment OR18xIR14x45deg.x20mm Strong Motor Magnets for Generators Wind Turbine Rotor Neodymium Permanent Magnet 36mm Diameter 20mm Height 8 Pack - Image 4](https://m.media-amazon.com/images/I/41FqvGQy2AL.jpg) ![N42H NdFeB Arc Segment OR18xIR14x45deg.x20mm Strong Motor Magnets for Generators Wind Turbine Rotor Neodymium Permanent Magnet 36mm Diameter 20mm Height 8 Pack - Image 5](https://m.media-amazon.com/images/I/31YQXV54amL.jpg) ## Questions & Answers **Q: Need more then 8. A price on 100 count** A: As the prie for Neodymium magnets increases a lot, the price based on current market price is US$3.2 each. For 100 pieces, you can purchase 10 lots (80 pieces) and Choose Ships from Magerial (the seller). We will ship 100 Pieces for you. **Q: Can we get the hollow space filled with magnet wuth a hole in its center and larger diameter 5cm?** A: Sorry that you cannot get such magnets. Magnet is a kind of customizing product and it takes quantity to produce according to your need. A model of sample( even for 1 piece) still takes up to 16 steps to produce and US$220.00 and 4 weeks to produce. Instead of bolt/scew fixing, you may use glue to fix the magnet, and choose a similar size model. This will save you pretty much costs and time. **Q: Can this be assembled into a haltermann array?** A: This magnet cannot be assembled into a haltermann array, as the magnetizing directions are coming in pair, SN-NS, with poles on the largest faces. **Q: Hola necesito uno mas grande .que el radio sea entre 8 a 12 pulgadas ,si puedes hacerlo porfa dejame saber pa comprarlo** A: Envíenos su consulta, incluida la información exacta del producto, como el radio exterior, el radio interior, el ángulo, la altura y la cantidad que potencialmente necesita. ## Frequently Bought Together - Magerial N42H NdFeB Arc Segment OR18xIR14x45deg.x20mm Strong Motor Magnets for Generators Wind Turbine Rotor Neodymium Permanent Magnet 36mm Diameter 20mm Height 8 Pack - BNTECHGO 28 AWG Magnet Wire - Enameled Copper Wire - Enameled Magnet Winding Wire - 4 oz - 0.0122" Diameter 1 Spool Coil Red Temperature Rating 155℃ Widely Used for Transformers Inductors - Realth Neodymium Ring Magnets Dia. 0.75''×0.12'' - 0.31'' Hole, Disc Magnets with Hole, Magnet Rings for Research Industrial Purposes Educational, 10 Pack(MT1910) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/318634115-n42h-ndfeb-arc-segment-or18xir14x45deg-x20mm-strong-motor-magnets-generators](https://www.desertcart.co.za/products/318634115-n42h-ndfeb-arc-segment-or18xir14x45deg-x20mm-strong-motor-magnets-generators) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-10-07*