---
product_id: 106172527
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: "351.28 DT"
currency: TND
in_stock: true
reviews_count: 8
category: "Magerial"
url: https://www.desertcart.tn/products/106172527-n42h-ndfeb-arc-segment-or18xir14x45deg-x20mm-strong-motor-magnets-generators
store_origin: TN
region: Tunisia
---

# N42H high-temp NdFeB magnet grade Precise 36mm OD x 20mm height arc segments Ni+Cu+Ni triple-layer corrosion-resistant coating 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:** 351.28 DT
**Availability:** ✅ In Stock

## Summary

> 🧲 Power your projects with precision and strength—don’t get left behind in the magnet revolution!

## 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?** 351.28 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/106172527-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

- • **Built to Last & Shine:** Triple-layer Ni+Cu+Ni coating ensures superior corrosion resistance and a sleek, stainless steel-like finish that stands out.
- • **Magnetize Your Innovation:** Diametrically magnetized arc segments with perfect pole alignment for powerful motor and generator builds.
- • **Heat-Resistant Performance:** Grade N42H magnets maintain strength up to 120°C, ideal for demanding industrial and renewable energy applications.
- • **Precision Fit for Seamless Assembly:** Exact 36mm outer diameter and 20mm height dimensions guarantee a snug, professional fit in your rotor or stator designs.
- • **Complete 8-Pack for Full Rotor Rings:** Get all 8 arc segments needed to assemble a full 36x20mm magnet ring—engineered for easy integration and maximum magnetic flux.

## Overview

This 8-pack of N42H grade NdFeB arc segment magnets features diametrical magnetization with poles arranged for optimal motor and generator efficiency. Coated with a durable Ni+Cu+Ni triple layer, these 36mm diameter by 20mm high magnets resist corrosion and maintain magnetic strength up to 120°C, making them perfect for high-performance wind turbine rotors and custom motor builds.

## Description

Magerial N42H NdFeB Arc Segment OR18xIR14x45deg.x20mm Strong Motor Magnets for Generators Wind Turbine Rotor Neodymium Permanent Magnet 36mm Diameter 20mm Height 8 Pack: desertcart.com: Industrial & Scientific

Review: NOT SHIPPED AS SHOWN, TRICKY TO PUT TOGETHER - ~ These magnets are super strong & don't come assembled in a cylindrical form as shown. They are flat on top of each other separated by plastic. ~ Take care with handling them since they can easily snap pinch your fingers if not careful. ~ It is tricky to put them together if you don't have a separator in between that fits the cylindrical hollow space in-between the magnets. So find a tube that fits then assemble the magnets around it. ~ The other tricky part is getting the correct polarities aligned so the magnets stick together.
Review: Great quality and measurement accuracy - Used this in a 3d printed generator/motor build that I was testing out. the measurements were accurate enough that I had the build printed before it arrived. These magnets slid right in very snugly and smoothly, so the machining on these are spot on with the description. Very happy with this buy!

## 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.
- [SUPERB FOR THE CRAFT IDEA]: It is coated with Ni+Cu+Ni Triple Layer Coating, copper and nickel to give superior corrosion resistance and provide a smooth and clean finish and own shiny surface, look like stainless steel.
- [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 OD36*ID28*Height20mm.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07N831KGG |
| Best Sellers Rank | #246,488 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #854 in Rare Earth Magnets |
| Brand | Magerial |
| Brand Name | Magerial |
| Color | Steel Color |
| Customer Reviews | 4.4 out of 5 stars 173 Reviews |
| Included Components | NeodymiumIronBoron Alloy |
| Item Dimensions L x W x Thickness | 1.1"W |
| Item Thickness | 20 millimeters |
| Item Weight | 0.27 g |
| Manufacturer | HMME |
| Material | Copper |
| Material Type | Copper |
| Model Number | ArcMagnets |
| Number of Pieces | 8 |
| Part Number | ArcMagnets |
| Product Dimensions | 1.1"W |
| Shape | Round |
| UPC | 754525931225 |
| Unit Count | 8 Count |

## Product Details

- **Brand:** Magerial
- **Color:** Steel Color
- **Material:** Copper
- **Product Dimensions:** 1.1"W
- **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/51qc0YJGK6L.jpg)

## Available Options

This product comes in different **Color** options.

## 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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ NOT SHIPPED AS SHOWN, TRICKY TO PUT TOGETHER
*by D***Z on September 6, 2022*

~ These magnets are super strong & don't come assembled in a cylindrical form as shown. They are flat on top of each other separated by plastic. ~ Take care with handling them since they can easily snap pinch your fingers if not careful. ~ It is tricky to put them together if you don't have a separator in between that fits the cylindrical hollow space in-between the magnets. So find a tube that fits then assemble the magnets around it. ~ The other tricky part is getting the correct polarities aligned so the magnets stick together.

### ⭐⭐⭐⭐⭐ Great quality and measurement accuracy
*by C***S on July 14, 2023*

Used this in a 3d printed generator/motor build that I was testing out. the measurements were accurate enough that I had the build printed before it arrived. These magnets slid right in very snugly and smoothly, so the machining on these are spot on with the description. Very happy with this buy!

### ⭐⭐⭐⭐⭐ strong
*by J***J on October 30, 2022*

I got these to use on car oil filters, their curvature fit the round filter body perfectly. Yes it really does work and traps the very fine metal particles that pass through the filter media. I highly suggest using these + a magnetic tipped oil drain plug on any engine with a timing chain, oil operated vvt cam gears, solenoids in the oil system, or push rods. Over the last year I have cut open several filters at 4k mileage oil changes and found very fine metal dust captured, the particle size so fine/small you can not feel it. A large % would easily pass through even the best quality filters media.

## 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)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-27*