Materials & Grades
Choosing magnet shapes: bar, block, disc, ring
Match magnet shapes to assemblies, pull force needs, and manufacturability.
Last updated on 2026/01/26
Why shape selection matters
Shape affects pull force distribution, assembly fit, and manufacturing cost.
Quick selection table
| Shape | Typical use cases | Notes |
|---|---|---|
| Bar | Fixtures, linear assemblies | Simple geometry, easy to source |
| Block | Clamping, holding | High surface contact area |
| Disc | Rotors, sensors | Good for axial magnetization |
| Ring | Shafts, couplings | Supports radial magnetization |
Design considerations
- Surface area: more area often improves holding force.
- Air gap: small gaps matter more on smaller shapes.
- Magnetization direction: confirm axial/radial needs.
RFQ checklist
- Shape, dimensions, and tolerance requirements.
- Magnetization direction and any multi-pole needs.
- Coating and environment details.
Ready for an RFQ?
Share your drawings, grades, coatings, and quantities. We will coordinate supplier feedback and confirm specs.
Related landing pages
Neodymium Bar Magnets
Source rectangular neodymium bar magnets with grade, coating, magnetization, and tolerance guidance plus RFQ support for OEM and industrial assemblies.
Neodymium Block Magnets
Source neodymium block magnets with grade, coating, magnetization, tolerance, and compliance guidance plus RFQ support for OEM and industrial assemblies.
Neodymium Disc Magnets
Source neodymium disc magnets with grade, coating, magnetization, tolerance, and compliance guidance plus RFQ support for OEM and industrial assemblies.
Neodymium Ring Magnets
Source neodymium ring magnets with OD/ID, thickness, magnetization, and coating guidance plus RFQ support for shafts, couplings, motors, and encoder assemblies.