This is a relatively small size counterbore ring magnet made of sintered neodymium iron boron, with an outer diameter of 8mm, an inner hole of 3mm, and a thickness of 3mm. The surface is nickel plated. Through magnetization in the thickness direction, you can choose the N35-n52 grade, but it can only withstand temperatures of 80 degrees Celsius. If you need to withstand higher temperatures, you need to choose M, H, or SH grades to meet the application requirements. It can be widely used in fields such as office, home, electronics, aviation, military, medical, DIY, and other fields, Black epoxy and other coatings are recommended for those with poor environment. If you have any other questions, please feel free to make inquiries to us.
We are direct magnet manufacturers. All neodymium magnets are environmentally friendly and non-toxic. The size can be processed larger or smaller, depending on your needs.
Introduction to the article on neodymium sinking hole strong magnet;
Notes for customized rare earth countersunk magnets
Why ring neodymium magnets need to process countersunk hole shape?