Why do Gearbox Housings experience noise or vibration?

1. Inadequate Structural Design

If the wall thickness, reinforcing ribs, and support point layout of Gearbox Housings are not precisely analyzed using CAE, the resonant frequency may coincide with the operating frequency, resulting in noise and vibration. Ningbo Jieda Molding & Machine Co., Ltd. uses advanced CAD/CAE software for structural optimization to ensure the housing maintains rigidity under various operating conditions.

2. Internal Material Defects

If porosity, shrinkage cavities, or inclusions occur during the aluminum alloy die-casting process, it will weaken the overall strength of the housing, leading to localized stress concentration and vibration. The company possesses high-precision die-casting equipment worth over 700,000 RMB (such as Lijin 1600T and 800T) and strictly controls material defect rates through the IATF 16949 quality system.

3. Assembly Errors and Fitting Clearances

If the fitting clearance between gears, bearings, and the housing exceeds the design tolerance, it will generate impact and friction noise. Jetta's precision CNC machining centers and EDM (Electrical Discharge Machining) achieve micron-level machining accuracy, ensuring assembly conforms to design requirements.

4. Inadequate Surface Treatment

If Gearbox Housings do not undergo proper anti-corrosion or vibration damping treatment, localized loosening or resonance can easily occur. The company offers various surface treatment processes (sandblasting, anodizing, spraying, etc.) to improve the vibration damping performance and durability of the housing according to customer needs.

Gearbox Housings Quality Advantages

1. High-Precision Design and Simulation

Utilizing advanced software such as PRO/E, CAM, and CAE for full-process digital design ensures that every Gearbox Housing achieves optimal structural strength and dynamic performance.

2. Complete Production Chain

From mold design and die casting to precision machining and surface treatment, everything is completed in-house at Ningbo Jetta, shortening delivery time and ensuring quality traceability.

3. Rigorous Quality Management System

We have obtained IATF 16949 certification and implement closed-loop risk control and continuous improvement. All Gearbox Housings undergo rigorous testing for dimensions, hardness, vibration, and other parameters before leaving the factory.

4. Global Customer Recognition

Our products are exported to the United States, Germany, Italy, the United Kingdom, France, and many other countries, and are trusted by world-renowned automotive, machinery, and new energy companies.