---
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: "€ 83.76"
currency: EUR
in_stock: false
reviews_count: 8
url: https://www.desertcart.hr/products/106172527-n42h-ndfeb-arc-segment-or18xir14x45deg-x20mm-strong-motor-magnets-generators
store_origin: HR
region: Croatia
---

# 120°C Max Operating Temp - High Heat Resilience N42H Grade NdFeB - Ultra Strong Magnetism Ni+Cu+Ni Triple Coating - Superior Corrosion Defense 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:** € 83.76
**Availability:** ❌ Out of Stock

## Summary

> 🧲 Power Your Innovation with Magnetic Precision and Durability!

## 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?** € 83.76 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/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

- • **Versatile 8-Pack Assembly:** Create custom magnet rings (OD36*ID28*H20mm) tailored to your project needs
- • **Premium Triple-Layer Coating:** Sleek, corrosion-resistant finish that lasts in harsh environments
- • **Industrial-Grade Heat Tolerance:** Sustain peak magnetic performance up to 120°C without degradation
- • **Diametrically Magnetized Precision:** Optimized pole alignment for maximum motor & generator efficiency
- • **Pro-Recommended for Metal Filtration:** Capture microscopic metal particles in oil filters, extending engine life

## Overview

The Magerial N42H NdFeB Arc Segment set features eight diametrically magnetized neodymium magnets with a 36mm diameter and 20mm height, designed for high-performance applications like generators and wind turbine rotors. Engineered with a triple-layer Ni+Cu+Ni coating, these magnets resist corrosion while maintaining a sleek stainless steel look. Rated for continuous use up to 120°C, they deliver reliable strength and durability in demanding industrial environments.

## 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: strong - 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.
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.

## 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 | #89,934 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #436 in Rare Earth Magnets |
| Brand | Magerial |
| Color | Steel Color |
| Date First Available | January 29, 2019 |
| Item Thickness | 20 Millimeters |
| Item Weight | 0.01 ounces |
| Item model number | ArcMagnets |
| Manufacturer | HMME |
| Material | Copper |
| Number of Pieces | 8 |
| Product Dimensions | 1.1"W |
| Shape | Round |
| UPC | 754525931225 |

## 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)
![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/619lt-IgAwL.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/41KoSneoamL.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

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ 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!

## 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
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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-06*