Secondary Vertical Damper for Metro

High damping stability for metro bogie secondary vertical suspension

Optimized for vibration reduction between car body and bogie

Durable hydraulic sealing structure for long service life

Stable performance under high-frequency rail vibration conditions

Low noise and smooth damping response

Suitable for urban rail transit and high-density metro operation

Resistant to temperature variation and harsh environments

Hydraulic dampers are widely used in:

Metro and subway vehicles

Urban light rail transit systems

High-speed rail auxiliary damping systems

Passenger train bogie secondary suspension

Rail vehicle vibration control systems

Car body-to-bogie vertical damping applications

Especially in metro bogie secondary vertical suspension systems, they play a critical role in improving ride quality and reducing structural fatigue.

1. What certifications do your railway hydraulic dampers have?

Our railway hydraulic dampers are certified with CRCC certification, Russian GOST certification, and IRIS certification. These certifications demonstrate compliance with international railway quality and safety standards for metro, EMU, and high-speed rail applications.

2. What makes your company different from other railway damper manufacturers?

We are one of the earliest private enterprises in China to obtain EMU hydraulic damper certifications. Our company operates a leading high-speed rail hydraulic damper laboratory in China, with testing capabilities comparable to — and in some areas exceeding — major railway research institutions as of 2025. We provide OEM-level quality with more competitive pricing and long-term technical support.

3. Can your dampers be customized for different railway vehicles?

Yes. We can customize hydraulic dampers according to different railway vehicle platforms and operational requirements worldwide. Our engineering team supports European, Chinese, and Japanese railway systems, including metro trains, high-speed trains, locomotives, and passenger coaches.

4. What are the advantages of your secondary vertical dampers for bogies?

Our secondary vertical dampers are designed to improve ride comfort, reduce vibration and noise, enhance vehicle stability, and protect bogie components from excessive dynamic loads. They help maintain smooth train operation at high speeds while improving passenger comfort and reducing maintenance costs.

5. Does your laboratory support testing and validation for overseas railway dampers?

Yes. Our laboratory is certified with both CNAS and CMA accreditation. We can test and validate various railway dampers from global vehicle platforms, including European, Chinese, and Japanese systems, ensuring reliable performance verification and quality assurance.

6. Can you provide damper overhaul and refurbishment services?

Yes. In addition to manufacturing new hydraulic dampers, we also provide professional overhaul, repair, and refurbishment services. Customers can send used or expired dampers to our factory for inspection, rebuilding, and performance restoration to ensure operational safety and reliability.

7. How do your refurbishment services help railway operators reduce costs?

Refurbished dampers offer OEM-comparable performance at a significantly lower cost than purchasing new products. This helps railway operators, rolling stock manufacturers, and maintenance depots reduce lifecycle and operating expenses while maintaining safety and reliability standards.

8. Do you provide warranty and after-sales technical support?

Yes. All hydraulic dampers and refurbishment services include manufacturer warranty coverage and dedicated after-sales support. Our professional technical service team provides continuous assistance to help railway operators ensure safe, stable, and reliable train operation throughout the product lifecycle.

Hydraulic dampers are essential components used in modern metro and urban rail systems, especially in the secondary suspension system of bogies. This product is designed as a vertical hydraulic damper installed on the metro bogie to effectively control vibrations between the car body and bogie frame.

By optimizing damping force and energy absorption, it significantly improves ride stability, passenger comfort, and operational safety under various track conditions.