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Help CenterPrecision Molded Magnetic Ring Rotor, PA/PPS, Multi-pole (4-8 Poles), 150°C Rated, 0.02mm Wall Thickness Tolerance
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Welcome to Changzhou Hongxinyutai Precision Mold Co., Ltd. – your trusted partner in precision molded components. We are proud to present our Precision Molded Magnetic Ring Rotor, crafted from high-performance PA or PPS materials with a multi-pole configuration (4 to 8 poles). Designed for demanding applications, this rotor delivers consistent magnetic performance, exceptional dimensional accuracy, and reliable operation at temperatures up to 150°C. With a remarkable wall thickness tolerance of just 0.02mm, our product ensures seamless integration into your motor or sensor assemblies, reducing assembly time and improving overall efficiency.
Our rotors are manufactured using advanced injection molding technology, combining magnetic materials with high-temperature resistant polymers. The result is a lightweight, durable, and corrosion-resistant component that meets the rigorous requirements of automotive, industrial, and consumer electronics sectors. Whether you need a standard configuration or a customized design, our team is ready to support your project from prototype to mass production.
Key Product Features
- Precision Molded Design: Achieves tight dimensional tolerances (wall thickness ±0.02mm) for consistent magnetic field distribution.
- Multi-pole Magnetization: Available in 4, 6, or 8 poles, providing flexible magnetic field patterns for various applications.
- High-Temperature Resistance: Rated for continuous operation at 150°C, suitable for under-hood automotive environments and industrial motors.
- Material Options: Choose between PA (polyamide) for cost-effectiveness or PPS (polyphenylene sulfide) for superior chemical and thermal resistance.
- Integrated Magnetic Ring: The magnetic material is fully encapsulated during molding, preventing chipping or delamination.
- Lightweight Construction: Reduces inertia and improves dynamic response in rotating applications.
- Excellent Dielectric Strength: The polymer housing provides electrical insulation, eliminating the need for additional insulation layers.
- Corrosion and Chemical Resistance: PPS version withstands exposure to oils, fuels, and coolants.
Technical Specifications
| Material | PA (Polyamide) or PPS (Polyphenylene Sulfide) |
| Number of Poles | 4, 6, 8 (customizable) |
| Rated Temperature | 150°C (continuous) |
| Wall Thickness Tolerance | ±0.02mm |
| Magnet Type | Embedded ferrite or NdFeB magnetic ring (optional) |
| Molding Process | Precision injection overmolding |
| Certification | TS16969 (IATF 16949 equivalent) |
Customer Benefits
- Reduced Assembly Costs: The precise outer diameter and wall thickness eliminate the need for secondary machining or shimming.
- Improved Motor Performance: Uniform magnetic field from multi-pole configuration reduces cogging torque and improves efficiency.
- Longer Service Life: High-temperature polymers and encapsulated magnets resist thermal cycling and mechanical stress.
- Design Flexibility: Custom pole counts, materials, and dimensions available to match your specific rotor geometry.
- Global Supply Chain: Our factory in Changzhou, Jiangsu, with convenient access to Jiangsu, Shanghai, and Shenzhen ports, ensures timely delivery worldwide.
Why Choose Changzhou Hongxinyutai Precision Mold Co., Ltd.?
Established in 2017, our company has grown into a specialized manufacturer with a 1,000–3,000 sqm factory and a dedicated team of 51–100 employees. We hold the TS16969 certification, demonstrating our commitment to quality management in the automotive and industrial sectors. Our products are exported to North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and beyond. With a strong domestic market presence and a reputation for precision, we have supplied millions of molded components to satisfied customers worldwide.
We understand that every application is unique. That's why we offer customizable solutions – from material selection to pole count optimization – to meet your exact requirements. Our engineering team works closely with clients during the design phase to ensure the rotor integrates seamlessly into your system. We also provide sample testing and small-batch prototyping before full-scale production.
Backed by our TS16969-certified quality system, we guarantee that every rotor meets the strictest dimensional and magnetic performance standards. Our wall thickness tolerance of ±0.02mm is achieved through advanced mold design, precise process control, and in-house measurement using CMM and optical comparators.
Don't let inconsistent rotor quality compromise your product performance. Contact us today to discuss your Precision Molded Magnetic Ring Rotor needs. We will provide a competitive quotation, technical datasheet, and lead time information. Let's work together to power your next generation of motors, sensors, and actuators!
Frequently Asked Questions (FAQ)
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Q: What is the difference between the PA and PPS material versions?
A: PA (polyamide) offers good mechanical strength and cost-effectiveness for moderate temperature applications. PPS (polyphenylene sulfide) provides superior chemical resistance, higher thermal stability (up to 200°C intermittent), and lower moisture absorption. Choose PPS if your rotor will be exposed to aggressive fluids or high-humidity environments. -
Q: Can the rotor be customized with a different number of poles?
A: Yes, we offer 4, 6, and 8 poles as standard. Custom pole counts (e.g., 10, 12) are available upon request, depending on the overall diameter and magnetic material characteristics. -
Q: What is the typical lead time for production?
A: For standard designs, lead time is approximately 3–4 weeks after sample approval. Customized molds may require additional 4–6 weeks. We can provide expedited options for urgent orders. -
Q: Do you provide samples for testing?
A: Absolutely. We offer samples for evaluation, typically at a nominal cost plus shipping. The sample cost is refundable upon placement of a production order. -
Q: Is the rotor suitable for high-speed applications?
A: Yes, the lightweight polymer construction and tight balance tolerance make it suitable for rotational speeds up to 10,000 RPM (depending on diameter). For higher speeds, we recommend a balanced design with PPS material. -
Q: What certifications does your company hold?
A: We are certified under TS16969, which is aligned with the automotive quality management system standard. Our factory also follows internal quality control procedures based on ISO 9001 principles. -
Q: How do you ensure the 0.02mm wall thickness tolerance?
A: We use precision mold inserts with hardened steel and multi-cavity design, combined with real-time injection pressure monitoring. Each rotor is inspected using automated vision systems and coordinate measuring machines (CMM) to guarantee dimensional consistency. -
Q: What are your shipping options?
A: We ship from Jiangsu, Shanghai, and Shenzhen ports. For small quantities, we use express couriers (DHL, FedEx, UPS). For bulk orders, sea freight or air freight is arranged. We can also deliver to your preferred freight forwarder.
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