Injection Magnet · Ferrite Material
GX Magnet manufactures injection-molded ferrite components to customer drawings for OEM motors, sensors and magnetic assemblies, including complex molded geometries and parts with integrated inserts. Geometry, polymer requirements, mating interfaces and magnetization are reviewed before tooling; critical molded dimensions and finished-part magnetic response are verified during sample approval.
FOR A FASTER QUOTATION
These inputs help GX evaluate molding feasibility, tooling, compound and magnetization requirements, and the inspection scope needed to prepare the quotation and sample plan.
ASSEMBLY-DRIVEN MOLDING
Most magnet manufacturers only handle simple ring shapes. We solve molding risks at the design phase: mold shrinkage simulation, insert position calibration and thin‑wall feasibility review before tooling starts.
FINISHED-PART MAGNETIC FUNCTION
Poor pole‑position accuracy & uneven flux are common pain‑points for injection ferrite. Our in‑house magnetization tooling and magnetic simulation guarantee stable magnetic response for sensor and BLDC motor applications.
Every new project validates magnetic curve on pre‑production samples before mass release.
SAMPLE-TO-PRODUCTION CONTROL
Injection-molded magnets can vary through compound condition, molding parameters, insert position and magnetizing settings. GX uses the released drawing, approved sample and control plan to connect molded dimensions, insert location and magnetic acceptance with recurring production. Automated loading, positioning, overmolding, magnetization and inspection are applied on suitable programs to reduce manual handling and support lot-to-lot consistency
Product and supply scope
An injection-molded ferrite magnet is a permanent magnet produced by molding a ferrite-filled polymer compound. This process is selected when a component requires complex molded geometry, locating features, integrated inserts or a defined multipole pattern that would be difficult to achieve with a conventional sintered ferrite part.
GX manufactures drawing-based injection-molded ferrite components for motors, pumps, sensors and actuators. Polymer-system requirements, molded shrinkage, critical datums, insert position, magnetization and finished-part acceptance are reviewed before tooling and sample approval. The quotation defines whether GX supplies the molded magnet only or an approved insert-molded component; shafts, hubs, carriers, electronics and final assemblies are identified separately when included.
DESIGN INPUTS BEFORE TOOLING
GX supplies injection-molded ferrite components using PPS, PA66 or PA12 polymer systems with approximately 65–90 wt% magnetic-powder loading. The final compound, molded geometry, insert interface and pole pattern are selected according to the required magnetic output, mechanical conditions and molding process.
Technical parameters for quotation
GX reviews the ferrite-polymer compound, molded geometry, insert interface and finished-part magnetic output as one specification. GX supply supports PPS, PA66 (PA6/6) and PA12 systems, approximately 65–90 wt% magnetic-powder loading and 2–64-pole magnetization for applicable projects. Final values are confirmed through the released drawing, approved samples and agreed inspection plan.
| Parameter group | Project-specific review basis | Confirmation and Release Basis |
|---|---|---|
| Material / Molding Route | Select PPS, PA66 or PA12 and approximately 65–90 wt% magnetic-powder loading according to magnetic output, molded strength and operating conditions. Confirm isotropic or anisotropic compound and the required orientation route. | Approved compound specification records the polymer system, powder loading and orientation condition; material-property data is provided at the agreed test temperature when specified. |
| Geometry and tolerances | Define wall sections, ribs, holes, molded datums, insert position, flash limits, shrinkage-sensitive dimensions and mating tolerances. | Released drawing establishes dimensions, datums and tolerances; first-article inspection verifies the critical molded features and assembly fit. |
| Magnetic / Functional Requirement | Specify magnetization direction, polarity and a 2–64-pole pattern where applicable. Define field, flux, pole position or waveform at the stated air gap and measurement position. | Approved sample report records the pole count, measurement air gap, position, fixture, temperature and finished-part magnetic limits. |
| Shaft / Insert Interface | Define shaft, hub or sleeve material, mating dimensions, embedded length, runout, retention method and any pull-out-force or transmitted-torque requirement. | Assembly drawing confirms the insert interface; dimensional, pull-out, retention or torque testing is completed when specified. |
| Operating Environment | State operating temperature, moisture, chemical exposure, mechanical load, speed and magnetic-circuit conditions. | Validation plan defines the applicable exposure conditions, test duration and pass criteria for the selected compound and component. |
| Inspection and acceptance | Confirm dimensional and visual limits together with polarity, field, flux or waveform inspection and the required sampling frequency. | Control plan identifies the gauge or fixture, measurement method, sample size, inspection frequency and lot-release records. |
| Supply Scope | Supply may cover a molded ferrite magnet or a drawing-defined insert-molded component with an integrated shaft, hub or sleeve. | Quotation and released drawing identify all supplied components and the included molding, magnetization, inspection, packaging and documentation. |
Project route
Every project passes material compound selection, mold feasibility assessment, magnetic simulation, magnetization planning and formal inspection validation before volume release.
Drawing, operating environment, pole‑magnetization pattern, mating interfaces, mechanical constraints and volume demands are jointly validated in early‑stage DFM review.
Ferrite‑polymer thermoplastic compound is selected and evaluated, matched against target magnetic performance, temperature resistance and mechanical operating limits.
Evaluate parting line, gate position, mold shrinkage compensation, datum definition, insert over‑molding layout and metrology access for inspection.
Injection molding executed under locked process parameters; qualified secondary finishing operations are performed where drawing specifications require.
Pole pattern, dimensional tolerance, visual quality and mating‑interface performance are fully verified; FAI report issued prior to sample approval.
Mass production strictly follows approved drawing revision, sample standard and inspection criteria to guarantee lot‑to‑lot repeatability.
VERIFICATION AND LOT RELEASE
GX converts the released drawing and approved sample into a project-specific control plan. Molded dimensions, insert position, mechanical retention, pole pattern, magnetic output and appearance are checked using defined gauges, fixtures and test conditions. Recurring lots are released only after the specified inspection results meet the approved acceptance limits.
| Inspection item | Control and Verification Method | Controlled Risk |
|---|---|---|
| Molded Dimensions and Datums | Critical dimensions, wall sections, holes, datums, flash limits and insert positions are checked by CMM, gauges or project-specific fixtures. | Controls assembly fit, working air gap and component location. |
| Insert Interface and Retention | Shaft, hub or sleeve position, runout and mating dimensions are measured; pull-out force, retention force or transmitted torque is tested when specified. | Reduces insert displacement, unstable rotation and mechanical-interface failure. |
| Pole Pattern and Magnetic Output | For applicable 2–64-pole parts, GX verifies polarity, pole count, pole position, surface field, flux or waveform at the defined air gap and measurement position. | Prevents reversed polarity, incorrect pole sequence and inconsistent motor or sensor response. |
| Appearance and Molding Condition | Flash, short shots, exposed inserts, cracks, surface condition and edge defects are evaluated against the approved visual standard. | Reduces assembly interference and disputes caused by molding defects. |
| Application-Specific Validation | Temperature exposure, humidity, thermal cycling, retention or functional testing is completed when included in the approved validation plan. | Confirms that the released material and component remain suitable under the specified operating conditions. |
Application fit
Match the molded geometry, insert interface, pole pattern and operating conditions to the application.
Insert-molded ferrite rotors for pumps, fans and actuators. Define shaft or hub fit, pole count, magnetic output, temperature and vibration before sample approval.
For circulation, drainage and appliance drives, review the rotor interface, working medium, temperature and pole pattern. Verify fit and magnetic output against the approved sample.
Molded magnetic targets with integrated hubs or shafts for position and speed sensing. Define pole position, air gap, field or waveform, and required sensor response.
Thin-wall or insert-molded ferrite parts for compact motors, drones and electromechanical assemblies. Review molded features, insert retention, pole pattern and mechanical load.
Quality evidence
GX Magnet runs full operations under IATF 16949 quality‑management system. All product releases are strictly bound to controlled drawing revisions, approved samples and predefined inspection specifications.
Critical dimensions, mating interfaces, multi‑pole layout and visual requirements are strictly governed by locked drawing revisions to avoid version deviation.
Full first‑article‑inspection (FAI) records covering dimensional measurements, magnetic‑performance data and functional‑test results are archived prior to serial‑production approval.
Fixed inspection scope & sampling plans are aligned at quotation phase. Every production batch carries traceable records for full‑life‑cycle quality lookup.
Project‑specific conformance documents, batch inspection records and magnetic performance test data can be provided during sample approval or project review, based on the approved drawing and agreed acceptance criteria.
Exhibition presence
GX Magnet uses industrial exhibitions to present ferrite materials, molded magnetic components and motor-part capabilities to OEM buyers, engineers and sourcing teams.
Compare molded geometries, inserts and ferrite product forms before choosing the quotation route.
Review pole patterns, mating interfaces, environment and validation expectations with the project context.
Use the meeting to plan drawing review, sample approval, inspection evidence and recurring-production communication.
Manufacturing background
Founded in 1992, GX combines ferrite-material experience with injection molding, 2–64-pole magnetization and finished-part magnetic inspection. GX supply supports PPS, PA66 and PA12 compounds with approximately 65–90 wt% magnetic-powder loading, selected according to project requirements.
Engineering and sourcing FAQ
Eight practical answers covering ferrite-polymer compound selection, molded geometry, insert integration, multipole magnetization, operating conditions, sample approval and inspection requirements for recurring production.
The main differences are the material route, achievable geometry, magnetic output and assembly method. Compare them in the actual magnetic circuit and operating condition; the product name alone is not enough to select the part.
Start with ferrite loading, polymer binder and orientation method. Then check the required magnetic output, geometry, temperature and commercial volume before fixing a grade in the drawing.
Control the dimensions that set fit, air gap or working position. For this product, review tooling geometry, inserts, tolerances, pole pattern and mating interface; avoid applying a tight general tolerance to non-functional surfaces without a measurement reason.
Specify the magnetization axis or pole pattern, pole count where applicable, and the acceptance method. A field value must also state the measurement location, fixture or air gap so supplier and buyer evaluate the same condition.
Temperature capability depends on material grade, geometry, magnetizing state and the magnetic circuit. Provide temperature, media exposure, mechanical stress and magnetic circuit; GX can then review demagnetization risk and whether the proposed material route fits the duty.
Use an agreed method tied to the application: material-property testing, surface field at a defined position, flux, pull force, pole pattern or waveform. The released drawing and acceptance plan should state the instrument, fixture and limits.
Send the drawing or 3D model, material or magnetic target, tooling geometry, inserts, tolerances, pole pattern and mating interface, temperature, media exposure, mechanical stress and magnetic circuit, expected quantity and acceptance method. State whether tooling, inserts, assembly or magnetization is included in the requested supply scope.
Agree the drawing revision, tooling state, critical dimensions and magnetic test method before sample release. Approval should identify the sample record and any deviations; recurring orders then follow the released specification, quotation and control plan.
Project inquiry
Attach the part and mating-assembly drawings. GX reviews geometry, material-system requirements, magnetization, interfaces, operating conditions and inspection methods before defining the sample route.
