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Help CenterAbsolute Flatness Auto Steering Motor End Cover Assembly IATF16949 Precision NVH Control Structure Plastics Malaysia
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Welcome to Changzhou Hongxinyutai Precision Mold Co., Ltd. – a dedicated manufacturer established in 2017, specializing in precision plastic components for automotive applications. Our Absolute Flatness Auto Steering Motor End Cover Assembly is engineered to meet the demanding requirements of electric power steering systems, combining advanced plastic materials with meticulous manufacturing control. With a factory spanning 1,000–3,000 square meters and a skilled team of 51–100 employees, we deliver components that enhance motor performance, reduce noise and vibration, and ensure long-term reliability.
This end cover assembly features absolute flatness – a critical parameter for proper sealing and bearing alignment in steering motors. Achieved through precision injection molding and rigorous quality checks, our cover maintains a flatness tolerance of just 0.01mm, eliminating gaps that could lead to oil leaks or bearing misalignment. The integrated NVH (Noise, Vibration, Harshness) control structure is specially designed to dampen operational vibrations, resulting in quieter steering operation and improved driver comfort. Manufactured from high-strength engineering plastics (e.g., PA66+GF30), the cover offers excellent dimensional stability, chemical resistance, and lightweight properties compared to metal alternatives.
Our production process is fully compliant with TS16969 certification (applicable upon request), ensuring traceability, process control, and defect prevention. Every end cover undergoes 100% inspection for flatness, dimensional accuracy, and visual defects. We use advanced mold flow analysis to optimize gate locations and cooling channels, minimizing warpage and internal stresses. The result is a consistent, high-quality product that assembles seamlessly with steering motor housings.
Key Features and Technical Specifications:
- Absolute Flatness: ≤0.01mm flatness across the entire mounting surface – verified by CMM inspection.
- NVH Dampening: Integrated ribs and wall thickness variations reduce vibration transmission by up to 30% compared to standard designs.
- Material Options: PA66+GF30, PBT+GF, or other engineering plastics as per customer requirements – customizable color and UV stability.
- Precision Molding: Injection molding with ±0.02mm tolerance on critical dimensions; mold life >1 million cycles.
- Sealing Surface: Designed for O-ring integration – ensures leak-free operation under high pressure and temperature.
- Lightweight: 40–60% lighter than aluminum end covers, contributing to overall motor weight reduction.
| Parameter | Value |
|---|---|
| Material | PA66+GF30 (or custom) |
| Flatness | ≤0.01 mm |
| Dimensional Tolerance | ±0.02 mm |
| Operating Temperature Range | -40°C to +120°C |
| Weight | Approx. 0.15–0.35 kg (depending on design) |
| Certification | TS16969 (upon request) |
Why Choose Our End Cover Assembly?
- Superior NVH Performance: Our proprietary structural design minimizes resonance and noise, meeting OEM requirements for quiet steering systems.
- Consistent Quality: Every batch is statistically monitored; we provide full inspection reports with each shipment.
- Customizable: We accept customer drawings and can modify the design for specific fit, material, or performance needs.
- Fast Lead Times: Standard molds can be ready within 30–45 days; production capacity up to 50,000 pieces per month.
At Changzhou Hongxinyutai, we understand the critical role of steering motor components in vehicle safety and comfort. Our end cover assembly has been successfully supplied to tier-1 automotive suppliers across North America, South America, Europe, Southeast Asia, and other global markets. We ship from ports in Jiangsu, Shanghai, and Shenzhen, ensuring efficient logistics to customers worldwide.
Trust the Numbers: Since 2017, our factory has grown to employ 51–100 skilled workers, operating in a 1,000–3,000 square meter facility dedicated to precision plastic molding. Our TS16969-certified quality system ensures that every product meets international automotive standards. Combined with our commitment to continuous improvement, we offer a reliable supply chain for your steering motor assembly needs. Contact us today to request a sample, discuss your design, or receive a competitive quotation.
Frequently Asked Questions
-
Q: Can the end cover be used for both brushed and brushless DC motors?
A: Yes, the design is compatible with most electric power steering motor architectures, including brushed and brushless types. We can adjust the internal geometry to match different rotor/stator configurations. -
Q: Do you supply the O-ring or gasket with the cover?
A: The cover assembly can include an integrated sealing groove; we can provide the O-ring separately if required. Please specify your sealing preference during order. -
Q: What is the typical lead time for a new mold?
A: For a custom-designed end cover, mold design and fabrication typically take 35–50 days. Production of the first samples can be expedited if existing mold frames are used. -
Q: Is the material RoHS compliant?
A: Yes, all our standard materials are RoHS and REACH compliant. We also offer halogen-free and UL-rated grades upon request. -
Q: How do you ensure the absolute flatness during mass production?
A: We use statistical process control (SPC) on injection parameters and check every cover with a flatness gauge or CMM. Mold temperature and packing pressure are tightly controlled to minimize warpage. -
Q: Can you produce end covers with integrated magnetic shielding?
A: Yes, we can incorporate soft magnetic composite inserts or metal shields into the plastic part. This requires additional design considerations; contact our engineering team for feasibility. -
Q: What is the minimum order quantity (MOQ)?
A: Standard MOQ is 1,000 pieces per variant. For sample orders, we can supply up to 50 pieces for testing with a small tooling cost. -
Q: Do you offer after-sales technical support for installation issues?
A: Absolutely. Our engineers are available to assist with assembly concerns, torque specifications, and any performance troubleshooting.
This product information is for reference only. Actual specifications may vary based on customer requirements. Please consult our sales team for detailed technical data.
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