Zhejiang Zhongke Magnetic lndustry Co., Ltd. We are a professional Rare Earth Magnet manufacturer, supplier and factory in China, we mainly OEM and ODM sintered ferrite magnet and neodymium magnets for many years. lts high-quality products include permanent sintered neodymium magnet and ferrite magnet which is widely used in consumer electronics, energy-saving white appliances, new energy vehicles, etc. It owns more than 4000 items, mainly supplied to large and medium-scale customers at home and abroad, including SAMSUNG, amazon, Nidec, Xiaomi, GREE, Midea, WOLONG, etc. ABOUT US About Zhongke Zhejiang Zhongke Magnetic lndustry Co., Ltd. is a professional manufacturer of ferrite magnet and neodymium magnet for many years. lts high-quality products include permanent sintered neodymium magnet and sintered ferrite magnet which is widely used in consumer electronics, energy-saving white appliances, new energy vehicles, etc. It owns more than 4000 items, mainly supplied to large and medium-scale customers at home and abroad, including SAMSUNG, amazon, Nidec, Xiaomi, GREE, Midea, WOLONG, etc. lt has two production bases, sintered Ferrite magnet factory and sintered NdFeB factory, which can guarantee fast delivery and high-quality. Zhongke has a strict quality system and has already passed ISO14001, ISO9001, TS16949, OHSAS 18001, ISO 45001. All products meet RoHS, REACH and have MSDS Certificate. Zhongke is a famous Brand in Zhejiang, a provincial high-tech R&D Center and an innovative Demonstration Enterprise in Zhejiang. PRODUCTS Ferrite Ring Magnet Ferrite ring magnets withstand temperatures of up to 250°C and down to -40°C and can therefore be used both indoors and outdoors. Zhongke could offer material grades in Y25, Y20, Y35, and Y30BH. Ferrite magnets are a bit fragile as they don't have a protective coating. Avoid bumps and knocks. Only work with magnets using tools specially designed for magnets. Neodymium Ring Magnet Applications of NdFeB Ring-Neodymium Ring magnets are used specifically for loudspeaker systems, hard disk drives, audio equipment such as microphones, acoustic pick-ups, headphones and loudspeakers, Dentures, Magnetically coupled pumps, Door catches, Motors and generators, Jewellery, Bearings. Machinable Dimensions (Can Be Product Name Size Type Classified According To Size), With Tolerances 1 、 3.00mm≤D/d≤10.0mm , Tolerances±0.03mm 2 Neodymium Inner and Outer Ring Magnet Diameter/Concentricity 、 10.0mm<D/d≤25.0mm , Tolerances±0.04mm 3 、 25.0mm<D/d≤40.0mm , Tolerances±0.05mm 4 、 40.0mm<D/d≤70.0mm , Tolerances±0.10mm Why choose Sintered Neodymium Ring Magnet Increased magnetic field density: Ring magnets have a circular shape that provides a more concentrated magnetic field, making them ideal for applications that require a strong magnetic field in a specific direction. Easy to assemble: Ring magnets can be stacked or placed in a specific orientation to create a more complex magnetic assembly, which makes them suitable for use in multi-magnet systems. Space-saving: Ring magnets take up less space than other shapes, which makes them ideal for applications where compactness is important. Improved stability: Ring magnets have a symmetrical shape that provides improved stability compared to other shapes, making them suitable for applications that require stability, such as motors or generators. Aesthetically pleasing: Ring magnets have a simple and elegant shape that can be appealing for certain applications, such as jewelry or decorative items. Ferrite Block Magnet Ferrite block magnet can be supplied in a wide range of dimensions and have always been a low-cost option in many areas. Large magnets are utilized by sweeping and separation applications, then smaller magnets are commonly used in various handcrafts for holding purposes. If you are looking for rectangular magnets, please supply size information Length, Width, and Height(Thickness). CONTACT US WeChat/Zalo/whatsApp: +86-15857968349 (Jerry Ma) Email: [email protected] Factory address Factory 1 No.9, Hongxing 3rd Road, Hengdian Industrial Park, Dongyang City, Zhejiang, China. Factory 2 No. 28, Changsheng Road, Hengdian Town, Dongyang City, Jinhua City, Zhejiang, China.