Hollow Cup Motor Magnet
This product is a production-grade Hollow Cup magnet engineered for applications where space is limited but magnetic performance cannot be compromised. Manufactured from sintered NdFeB, these discs are used widely in motors, sensors, magnetic couplings, fixtures and OEM subassemblies.
Products Description
- Material: NdFeB (Neodymium–Iron–Boron)
- Grade range: N35 – N52 (specify grade at enquiry)
- Shape: disc / cylinder - diameter and thickness made to order
- Typical tolerances: ±0.5 mm (standard; tighter tolerances available on request)
- Magnetization: Axial,Diametral,Axial Muti-poles,Radial
- Coatings: Ni–Cu–Ni (standard), zinc, epoxy, or custom coatings for corrosion resistance
- Max recommended operating temperature: 80°C - 230℃ (grade-dependent)
- Test & certification: dimensional checks and magnetic flux tests; ISO9001 and RoHS compliance; SGS reports available on request
What this part delivers in practice
These discs concentrate magnetic flux into a compact footprint, giving you higher pull and field strength than most ferrite alternatives of the same size. For engineers this means smaller, lighter assemblies or higher torque in motor designs. For procurement the parts are repeatable - consistent tolerance, coating quality and magnetic strength across production lots.
Why procurement teams work with us
- Sample first: request a small number to test fit, pull and coating performance in your environment.
- Custom sizing: diameter and thickness can be tailored so parts drop into existing fixtures without rework.
- Coating options: choose a finish to match your environmental requirements and assembly process.
- Scalable supply: we handle one-off engineering runs and ongoing bulk Hollow Cup magnets orders with stable lead times and batch documentation.
- Technical support: our engineers advise on grade selection, magnet orientation and assembly handling to avoid chipping or demagnetization during use.
Typical applications
- Rotors and stators for small motors and actuators
- Magnetic sensors, transducers and pickups
- Magnetic couplings, latches and holding devices
- Medical and consumer devices where compact magnetic sources are needed
Quality and handling notes
NdFeB is brittle and plated for corrosion protection. Recommend careful handling (soft jaws, non-impact fixturing) and storing with appropriate spacers or packaging. For high-temperature environments or elevated corrosion risk, we advise specifying higher-temperature grades or epoxy coatings.
How to proceed
Send your required diameter, thickness, grade and quantity. We'll supply samples for validation, then offer a pilot run to check assembly line fit and magnetic behavior before moving to volume production. For customers needing specification language for procurement, we provide drawing templates, tolerance sheets and test certificates.
If you want help choosing between grades or magnetization patterns, tell us your operating temperature and intended use - we'll recommend the most cost-effective option. Hitech Magnetics focuses on delivering pragmatic, testable magnet solutions tailored to manufacturers and OEMs.
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