Injection-molded plastic magnets for complex, lightweight parts
Injection molding of ferrite or NdFeB powder in a thermoplastic binder (PA or PPS) to make bonded-magnet parts with 3D geometry, insert-molded shafts/gears, and no post-grind in the cases the company describes.
AI-assisted directory summary. Technical specifications, performance metrics, readiness and compliance labels are unverified unless individually supported and reviewed. Proposed partnership routes do not establish supplier consent, export eligibility, or willingness to sign an NDA. Confirm claims and test conditions with the linked sources and supplier before procurement or citation.
Problem solved
Sintered magnets are limited to simple block/arc shapes, chip easily, often need grinding, and lock the design to a high rare-earth sintered grade. Plastic-magnet injection is used when the buyer needs complex 3D geometry, thin walls, insert-molded metal, lower inertia, or a ferrite-bonded option that does not depend on sintered NdFeB.
Application contexts
- Automotive auxiliary motors and sensors
- Industrial equipment magnet parts
- Power-tool rotors and stators where bonded magnets are acceptable
Technical principle
Magnetic powder (ferrite or neodymium) is compounded with a thermoplastic binder (PA or PPS) and injection-molded. The company states a skin layer forms during molding, which it claims is advantageous for corrosion resistance versus exposed sintered bodies. Insert molding can place a shaft or gear in the same shot. Magnetic performance is lower than sintered magnets; the trade is shape freedom, chipping resistance and dimensional control without grind.
Typical use cases
- Complex 3D bonded-magnet part that cannot be sintered without chipping
- Insert-molded shaft or gear magnet for a small motor
- Ferrite-bonded substitute when sintered NdFeB is not required by the magnetic circuit
Partnership route
How global engineering teams typically engage this asset.
Helpful to include: required Br / torque / air-gap flux · preferred powder (ferrite vs NdFeB) and binder (PA vs PPS) · geometry / insert metal · operating temperature · annual volume
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Source & provenance
Translation review status: unreviewed. Publication does not establish technical verification or supplier endorsement.
Original language: JA.
Record updated: .
- プラマグ射出成形 | 株式会社ニューテック
https://www.newtec-mag.co.jp/tech01
Primary-source candidate; evidence review: pending.
Source accessed / recorded (collector timestamp): .
Source publication date: Not recorded.
- 会社情報 | 株式会社ニューテック
https://www.newtec-mag.co.jp/company
Primary-source candidate; evidence review: pending.
Source accessed / recorded (collector timestamp): .
Source publication date: Not recorded.
Collector timestamps record when a source was stored, not an independent verification date. Source links provide context; they do not validate every specification, readiness label, certification, or proposed partnership route.