SKU 8634 is an N35 neodymium disk magnet measuring 5 mm in diameter × 4 mm thick, finished with Ni-Cu-Ni plating. It is axially magnetized, placing the north and south poles on the two flat circular faces. Its compact metric dimensions can suit small fixtures, closures or magnetic sensing assemblies after checking field and clearance requirements.
Specifications
| Magnet Size: |
5 mm × 4 mm |
| Tolerances: |
±0.004" |
| Material: |
Rare Earth NdFeB |
| Grade: |
N35 |
| Coating: |
Ni-Cu-Ni |
| Br (typical): |
12,100 Gauss |
| BHmax (typical): |
35 MGOe |
| Max Temperature: |
80°C / 176°F |
| Magnetization: |
Axial |
| Surface Gauss: |
5,109.78 Gauss |
| Pull Force: |
2.34 lb |
| Approx. Weight: |
0.0208 oz |
Design notes for this compact metric disk
Position a circular pole face toward the mating steel or magnet. Account for housing walls and adhesive layers when evaluating the working gap. Verify the required field at the sensor location rather than treating a listed surface field as the field throughout the assembly.
Check the complete assembly at the intended air gap and loading direction. Listed pull force is a comparison value, not a safe working load; target steel thickness, contact area and surface condition affect actual holding force. Provide clearance in the housing and protect the brittle magnet from impact during installation.
The listed maximum temperature is 80°C. Check the complete magnetic circuit and any adhesive or housing against the intended environment. Protect the nickel coating from scratches during assembly and handle the disk without allowing it to snap into another magnet.
Compare magnetic strength and temperature classes in our neodymium grades chart. Explore gap effects using the pull-force calculator, or send your drawing, operating conditions and volume through the Magnet RFQ Builder.
Compare other sizes in our disk and rod magnet range.
