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400AF Secondary Lateral Damper

Hydraulic shock absorber engineered for 400AF railway bogies, delivering stable vibration control and long service life.

Hydraulic Shock Absorber – 400AF Secondary Lateral Damper

The 400AF Secondary Lateral Damper is installed between the carbody and bogie frame to control lateral vibration and improve running stability. It is designed for modern railway vehicles operating under demanding service conditions.

Manufactured using advanced hydraulic damping technology, the damper helps reduce carbody sway, enhance passenger comfort and protect critical suspension components from excessive dynamic loads.

Typical Technical Characteristics:

Damper Type: Secondary Lateral Damper

Application Position: Secondary Suspension System

Structure: Hydraulic Oil-Filled Damper

Installation Type: Rubber Joint Connection

Service Environment: High-Speed Rail, Metro, Locomotive and Passenger Vehicles

Fatigue Resistance: Long-Term Cyclic Loading Capability

Corrosion Protection: Multi-Layer Surface Treatment

Leakage Performance: Strict Hydraulic Seal Design

Quality Validation: Type Tests and Performance Verification

The product is manufactured according to stringent railway industry quality standards and undergoes comprehensive performance testing before delivery.





Hydraulic Shock – Reliable Performance for Railway Operations

Optimized damping force characteristics for improved lateral stability

High-strength piston rod with superior wear resistance

Advanced sealing system minimizing oil leakage risk

Long service life under continuous railway operation

Excellent fatigue resistance for repeated loading conditions

Stable damping performance across wide temperature ranges

Suitable for both new vehicle manufacturing and overhaul projects

Designed for demanding railway safety requirements

Consistent quality supported by certified laboratory testing

Available for customized railway applications


High-Speed EMU Trains

CR450 Test Platform Projects

Metro Vehicles

Urban Rail Transit Systems

Electric Locomotives

New Energy Locomotives

Passenger Coaches

Freight Wagons

Heavy Haul Rail Vehicles

Large Railway Maintenance Machinery


Hydraulic Shock Questions & Answers

1. Can the 400AF Secondary Lateral Damper be customized?

Yes. We provide customized manufacturing according to drawings, operating conditions, vehicle models or technical specifications supplied by customers.

2. What testing capabilities do you have?

We operate an advanced railway damper laboratory accredited by both CNAS and CMA. The laboratory is among the leading railway damper testing facilities in China and can perform comprehensive performance verification and reliability testing.

3. Which railway dampers can you manufacture?

We can customize all railway damper types, including:

Anti-Hunting Dampers

Vertical Dampers

Lateral Dampers

Motor Dampers

Axle Dampers

Secondary Suspension Dampers

Applications cover:

High-Speed Trains

Metro Systems

Urban Rail Transit

Locomotives

Freight Cars

Passenger Coaches

Railway Maintenance Equipment

4. Do you provide damper testing services?

Yes. Besides manufacturing, we also provide independent damper testing and performance evaluation services supported by our CNAS and CMA certified laboratory.

5. Do you offer repair and overhaul services?

Yes. We provide both new manufacturing and overhaul services. Operators can reduce maintenance costs while maintaining equivalent product performance and operational reliability.

6. What quality certifications support your products?

Our manufacturing and testing systems follow railway industry requirements. We are one of China's earliest private enterprises to obtain certification for EMU dampers used on trains operating above 300 km/h.

7. Are your products used in high-speed railway projects?

Yes. Dampers developed by our company have participated in testing programs associated with the CR450 platform, currently China's fastest next-generation high-speed train project.

8. What warranty and after-sales support do you provide?

We provide product warranty, technical support, maintenance guidance, spare parts support and long-term service cooperation programs.

9. Can customers visit the factory?

Absolutely. Railway operators, distributors and industry partners are welcome to visit our manufacturing facilities and testing laboratory for technical discussions and audits.

10. Do you support small trial orders?

Yes. Small-batch trial orders are supported to help customers evaluate product performance before larger procurement projects.


Hydraulic Shock Solutions from a Trusted High-Speed Railway Supplier

As one of China's professional railway suspension component suppliers, we are committed to providing reliable hydraulic shock absorber solutions for global railway operators.

Supported by advanced CNAS and CMA accredited testing capabilities, extensive high-speed railway project experience and participation in next-generation CR450 development programs, we continuously deliver stable product quality, dependable supply capacity and responsive after-sales service.

We welcome railway operators, metro authorities, distributors and industry partners worldwide to establish long-term cooperation, conduct product trials, visit our facilities and jointly develop new railway damper solutions for future rail transportation projects.


400AF Secondary Lateral Damper
Hydraulic shock absorber engineered for 400AF railway bogies, delivering stable vibration control and long service life.
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Puran Technology
Exquisite Manufacturing


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Address:Room 705, Building 1, Xuyang Technology Building, No. 6 Sihezhuang Road, Fengtai District, Beijing


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