Product Overview
This N52 grade NdFeB ring magnet (outer diameter 36 mm, inner diameter 30 mm, thickness 10 mm) is engineered for use in assemblies that require a reliable magnetic field around a central opening. The annular shape is often preferred in rotating machines and compact electromagnetic systems where space is constrained but magnetic force must be maintained.
Compared with simple disc or block shapes, a ring geometry enables consistent magnetic field distribution in cylindrical designs, reducing torque ripple in motors and improving alignment in sensor and coupling applications.
Material & Magnetic Characteristics
- Material: Sintered NdFeB (neodymium iron boron) - high magnetic energy product.
- Grade: N52 - selected for elevated flux density and field strength.
- Shape: Ring / tubular magnetic element.
- Dimensions: OD 36 mm × ID 30 mm × thickness 10 mm.
- Magnetization: Radial (default) or custom magnetization patterns available upon request.
- Coating: Standard Ni–Cu–Ni plating; epoxy or zinc coatings offered for specific environments.
- Temperature Range: Typical continuous service up to ~80 °C; high‑temp grades offered for elevated conditions.
N52 offers one of the highest energy products available among permanent magnets, enabling this ring to produce significant flux in a relatively small form factor.
Typical Use Cases
This ring magnet is suited to a range of technical applications:
- Electric Motors: Radially magnetized rings can be integrated directly into rotor assemblies for brushless or synchronous machines.
- Sensors & Encoders: Uniform field source in rotary position sensing modules and encoder rings.
- Magnetic Couplings: Transmitting torque without mechanical contact through matched stator/rotor designs.
- Actuation & Automation: Compact magnetic elements in linear/rotary actuators where space and field uniformity matter.
In each case, the ring's geometry contributes to predictable field behavior, which simplifies system design and reduces iteration time.
Design & Implementation Notes
- Air Gap Control: Specify housing tolerances alongside magnet dimensions to maintain consistent air gap, which affects torque and sensitivity.
- Matched Sets: For multi‑pole configurations, matched magnets reduce vibration and improve dynamic balance.
- Temperature Planning: If operating near temperature limits, request a high‑temperature grade to ensure stable performance.
Providing accurate CAD drawings and operating environment details helps ensure magnets are matched to mechanical and thermal conditions from the start.
Procurement & Custom Support
We support bulk orders and OEM requirements. Customization options include:
Alternate magnetization directions or multi‑pole segmentation
Special coatings for corrosion, humidity or wear resistance
Tighter dimensional tolerances for automated assembly lines
Packaging and labeling suited to project deployment
To provide an accurate quote, include part specifications and expected application conditions.
Quality Assurance & Documentation
Each batch can be supplied with:
- Dimensional inspection reports
- Magnetic flux and coercivity data
- Coating verification records
- Traceability documentation for quality control
These support incoming inspection and help maintain consistency across production runs.
FAQ
Q1: Can These Magnets Be Magnetized Differently Than Radial?
A: Yes - axial magnetization or custom pole patterns are available on request.
Q2: Are Samples Available Before Placing Large Orders?
A: Yes - sample rings can be provided for verification prior to Bulk Orders.
Q3: What Coating Is Best For Outdoor Use?
A: Epoxy or zinc coatings improve surface protection in humid or outdoor environments.
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