High load-bearing and impact resistance
High-strength aluminum alloy, durable and reliable
Precision Engineered for Low NVH (Noise, Vibration & Harshness): Manufactured with tight dimensional tolerances via advanced gravity casting, these gearbox components ensure perfect gear meshing. This precision significantly reduces NVH, guaranteeing smooth and ultra-quiet power transmission at high speeds.
Exceptional Anti-Vibration & Anti-Fatigue Properties: Manufactured from high-strength ZL101A (A356) aluminum alloy, these components deliver outstanding structural durability, effectively resisting continuous mechanical stress and preventing fatigue failure under heavy-duty working conditions.
Product Overview: Designed as critical aluminum alloy castings for high-speed railway locomotives, essential for safe and efficient power transmission in the railway vehicle industry.
Material & Heat Treatment: Manufactured from high-strength ZL101A (A356) cast aluminum alloy. It undergoes rigorous solution heat treatment and artificial aging (T6 temper) to maximize tensile strength and structural stability, fully compliant with stringent TB/T 3134-2023 and TB/T 3409-2021 railway industry standards.
Casting Process: Produced via precision permanent mold gravity die casting, ensuring consistent wall thickness, excellent mechanical properties, and superior corrosion resistance for outdoor rail environments.
Air Tightness Performance: Rigorously tested to guarantee zero leakage at a pressure of 0.05 MPa for 30 minutes, meeting the stringent sealing requirements of high-speed gearboxes.
Customization: As a specialized aluminum alloy casting manufacturer, we provide OEM and customized casting services tailored to specific locomotive gearbox designs and flange configurations.
| Item | Details |
|---|---|
| Application | Railway vehicle industry |
| Raw Material | ZL101A aluminum alloy |
| Heat Treatment | Solution heat treatment and aging |
| Executive Standard | TB/T 3134-2023, TB/T 3409-2021 |
| Manufacturing Process | Permanent mold gravity casting |
| Air Tightness Performance | No leakage under 0.05 MPa pressure for 30 minutes |
| Main Markets | United States, Europe |



Engineered for the demanding requirements of modern rail transit systems, our ZL101A (A356) aluminum alloy gearbox components deliver high-strength, precision casting solutions for critical power transmission applications. As a specialized aluminum alloy castings manufacturer, we provide reliable components trusted by rail operators worldwide.
High-Speed Rail Transit
Manufactured via precision gravity die casting, these gearbox spare parts withstand extreme cyclic loads and high-frequency vibrations inherent to high-speed railway operations. The superior high-cycle fatigue resistance ensures long-term reliability, fully compliant with stringent TB/T 3134-2023 and TB/T 3409-2021 railway industry standards.
Urban Rail Transit & Metro Systems
Crafted from high-strength corrosion-resistant cast aluminum alloy, these components deliver exceptional durability for frequent start-stop cycles in urban transit networks. The optimized low NVH (Noise, Vibration & Harshness) characteristics guarantee smooth, quiet operation for enhanced passenger comfort.
Freight & Heavy-Duty Locomotives
Built with robust aluminum alloy castings, they handle the massive torque and continuous heavy loads of freight transportation. The robust sealing integrity ensures reliable lubrication and long-term durability in demanding freight rail environments.