Product summary
This product line covers sintered NdFeB magnets used in industrial applications (blocks, rings, arc segments and custom profiles). The text below focuses on engineering constraints and procurement realities - what design teams and buyers actually need to know when specifying and ordering these magnets for motors, actuators, generators and assemblies.
Technical data
- Material: sintered Nd–Fe–B. Common grades: N35, N42, N48, N52. Specify grade by required flux and working temperature.
- Shapes: block, ring, arc/segment, disc, or custom profile to drawing.
- Magnetization: axial, radial or custom multi-pole per drawing.
- Surface: Ni-Cu-Ni standard; epoxy, Zn or PTFE available for special environments.
- Tolerances: standard ±0.05 mm; tighter tolerances quoted per order.
- Temperature: standard grades stable to ~80 °C; high-temp variants (SH/UH/EH) available up to ~150 °C.
- Testing: batch Br, Hcj and dimensional inspection included on request.
Practical notes for designers
- Thin coatings add microns - account for final assembled gap in your drawings.
- NdFeB magnets are brittle: specify chamfers or mechanical supports if magnets are press-fit.
- For rotor assemblies, supply matched sets and indicate polarity scheme to avoid rework.
- If the part will be mechanically machined after sintering, state whether you require post-machining magnetization or pre-magnetized delivery.
Common use cases
- Segmented rotor/stator magnets for compact motors.
- Magnetic couplings and clutches where concentric mounting is needed.
- Sensors, encoders and small actuators.
- Fixtures and heavy-duty retention where high flux in limited volume is required.
Procurement & supply chain
- Samples: small sample sets available for fit and flux verification.
- Production flow: drawing → sample → production approval → batch production. Provide expected annual volume to optimise tooling and price.
- Lead time: standard shapes 2–4 weeks after approval; complex/custom tooling adds time.
- Packaging: magnets are separated, padded and packed to prevent attraction damage; bulk supply shipments palletised on request.
- QC docs: supplied per batch on request (magnetic and dimensional reports).
Short FAQ
Q: Can you make high-temp variants?
A: Yes - order SH/UH grades and select appropriate coating.
Q: What is MOQ?
A: Depends on custom tooling; standard parts have low MOQ, custom tools require MOQ negotiation.
Q: Do you accept CAD files?
A: Yes - provide STEP/IGES for quoting.
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