Magnetic Assemblies & Magnetic Materials
Ningbo Ruijian Magnetic Technology builds magnetic assemblies and magnetic materials for motor makers and industrial OEMs — precision, micro, special and irregular shapes, from high-temperature rotor magnets to fully finished, ready-to-install components.
Full range of sintered NdFeB grades, including Dy/Tb-bearing high-temp formulations
Typical finished dimensional tolerance after precision grinding, per your drawing
Flux and dimensional inspection before shipment, batch traceability maintained
Prototype lots to recurring mid-volume production runs supported
Products
We manufacture to drawing and magnetic specification — selecting the grade, coating and magnetization pattern for your operating temperature and demagnetization environment.
Curved magnets for surface-mount and built-in rotor designs in BLDC, servo, PMSM and traction motors.
Standard and custom geometries ground to tight flatness and parallelism for fixtures, sensors and couplings.
Magnets bonded and retained into housings, rotors and shafts — delivered as a ready-to-install component.
Magnet plates and tracks arranged in optimized pole patterns for linear motors and direct-drive axes.
Irregular, miniaturized and wire-cut profiles for consumer electronics, encoders and precision devices.
Protective finishes selected for your corrosion and assembly environment, applied in-house and tested.
| Series | Typical grades | Max operating temp* | Typical use |
|---|---|---|---|
| N | N35 – N52 | ≤ 80 °C | Sensors, fixtures, ambient-temperature assemblies |
| M / H | 35M – 48H | ≤ 120 °C | General industrial motors and couplings |
| SH | 35SH – 45SH | ≤ 150 °C | Servo and BLDC motor rotors |
| UH | 30UH – 42UH | ≤ 180 °C | Automotive drives, high-rise-temperature motors |
| EH / AH | 28EH – 38EH | ≤ 200 °C | Severe heat and strong demagnetization environments |
Applications
Rotor magnets and tracks for precision motion control
Drives, pumps, actuators and chassis systems
Compact, high-flux magnets for joint modules
Magnetic couplings and EC motor rotors
Precision magnetic rings and position targets
Miniaturized magnets for 3C and wearables
Why Ruijian
We work from your motor or assembly requirements and stay involved through sampling, qualification and repeat production — so the magnet you receive performs the way your design expects.
We recommend grade and dimensions against your operating temperature and demagnetization risk — avoiding both field failure and over-specification.
Ground dimensions, matched flux within a batch and consistent magnetization help your rotor build and balance process run predictably.
Flux distribution, dimensional and coating checks are recorded by lot, with inspection reports and sample retention for traceability.
We provide material and test documentation and support dual-use export licensing for Dy/Tb-bearing grades, keeping shipments compliant.
Specification, grade and coating defined together
Prototype magnets made and measured
Flux, dimension and assembly verification
Batch manufacturing with in-process control
Final inspection, reports and export handling
About Ruijian
Ningbo Ruijian Magnetic Technology Co., Ltd. (宁波睿见磁材科技有限公司) is a focused manufacturer of magnetic assemblies and magnetic materials. Located in Ningbo — at the heart of China's magnetic materials and motor component cluster — we combine local supply-chain depth with application-level engineering for motor makers and industrial OEMs at home and abroad.
Contact
Tell us your magnet dimensions, grade, coating, quantity and application. Our engineering team will review and respond with a recommendation and quotation.
Fields marked * are required.