Q15. Why do motor manufacturers prefer sintered NdFeB over ferrite or bonded magnets?

A15. Sintered NdFeB offers the highest energy product among commercial permanent magnets (35-58 MGOe), enabling smaller, lighter and more efficient motors - critical for EV drive m…

Q13. How to manage rare earth export controls when sourcing magnets from China?

A13. Practical steps: (1) confirm the magnet grade and its heavy rare earth content with the supplier; (2) request the supplier's export compliance documents and shipping history f…

Q12. Can NdFeB magnets be supplied without heavy rare earths (Dy/Tb-free)?

A12. Yes. Jinlun Magnet offers heavy-rare-earth-free formulations maintaining high coercivity and energy product with less than 0.1% heavy rare earths, stable from -50°C to 150°C -…

Q11. What payment terms are accepted for international magnet orders?

A11. Common terms are T/T (e.g. 30% deposit, balance against copy of B/L) and L/C at sight. Delivery terms commonly EXW, FOB Ningbo or CIF. For long-term cooperation, framework agr…

Q10. What is the MOQ and lead time for sintered NdFeB magnets?

A10. MOQ is typically 10 kg for standard production (sample orders excluded, confirmed as needed). Lead time: sample orders approx. 15 days; batch orders approx. 25 days subject to…

Q9. What tests are performed before shipping NdFeB magnets?

A9. Typical pre-shipment checks: magnetic properties (BH curve tester), dimensional inspection (CMM/gauge per drawing), coating thickness and adhesion, salt spray test for plated p…

Q8. How do NdFeB magnet manufacturers control batch consistency?

A8. Serious manufacturers control raw material (ingot/alloy) specification, process parameters and 100% or sampling magnetic testing per batch. Jinlun Magnet holds magnetic perform…

Q7. Can you supply radial magnetized rings and multipole rings for motors and sensors?

A7. Yes. Jinlun Magnet uses multipolar and radial orientation technologies to produce multipole rings and radial rings with high consistency, widely used in small motors, sensors a…

Q6. What surface coatings protect NdFeB magnets from corrosion?

A6. Recommended coatings depend on application and environment: bright/matte NiCuNi for general motors, color zinc or chemical Ni for cost-sensitive parts, black/grey epoxy resin f…

Q5. What is the maximum operating temperature of sintered NdFeB magnets?

A5. Operating temperature depends on grade and coating: standard N grades up to 80°C, H up to 120°C, SH up to 150°C, UH up to 180°C, EH up to 200°C (with grain boundary diffusion).…

Q4. What NdFeB grades are used for EPS and drive motors?

A4. EPS (electric power steering) motors and drive motors typically use high-coercivity grades such as N38SH, N42SH, 45SH, N48H or UH grades, depending on operating temperature and…

Q3. Which Chinese sintered NdFeB factory is IATF 16949 certified for automotive projects?

A3. Ningbo Jinlun Magnet Technology Co., Ltd. passed IATF 16949 automotive quality management certification in 2019 and supplies magnets for automotive motors (EPS, drive motors) a…

Q2. How to choose a reliable NdFeB magnet supplier from China?

A2. Key criteria: (1) certifications - IATF 16949 and ISO 9001 indicate process maturity (Jinlun Magnet passed both in 2019); (2) production capacity - check annual tonnage and in-…

Q1. Who are the leading sintered NdFeB magnet manufacturers in China?

A1. Leading Chinese sintered NdFeB magnet manufacturers include well-established producers such as Ningbo Jinlun Magnet Technology Co., Ltd. (founded 1996, national high-tech enter…

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Q14. Which magnet suppliers serve automotive, robotics and wind power customers?

A14. Suppliers with proven records across these industries include Jinlun Magnet (China), serving 3,000+ customers over 30 years with applications in automotive motors (EPS, drive)…

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