CRH380D Secondary Vertical Damper

hydraulic shock absorber for CRH380D secondary vertical position owns verified advantages from complete type inspection in national railway quality inspection center. 1. Strict paint inspection: coating thickness 60~200μm, ISO2409 grade 0 adhesion, 200h neutral salt spray compliance per ISO9227 2. All dimension passed dimensional inspection as drawing standards, standardized rubber bushing pre-press mounting size 3. Asymmetry ratio of tension/compression damping ≤10%, smooth indicator diagram without abnormal jump & fluctuation 4. Resist extreme -40°C low temp and +70°C high temp without damping failure after long storage 5. High fatigue structure passes millions of cycle durability test, surface operating temperature below 80℃ during long-running test 6. In-house CNAS&CMA lab repeats full performance verification before factory delivery; CR450 new high-speed train dampers under ongoing bench testing

secondary vertical damper is core suspension component widely matched to diversified global rail transit equipment besides CRH380D EMU.

High-speed EMU: CRH380 series, CR400 platform, ongoing CR450 350km/h+ experimental high-speed train project

Urban transit: metro & light rail vehicles, various urban rail transit motor unit dampers

Rolling stock: new energy locomotive, passenger coaches, heavy-duty freight wagon, engineering track maintenance machinery

Full-range spare dampers: anti-yaw damper, motor vibration damper, lateral secondary damper, primary vertical damper for bogie refurbishment & new manufacturing project

1.Q: Can your factory customize various types of railway hydraulic dampers?

A: Yes, full customized production available, covering high-speed train, metro, urban rail, locomotive, freight/passenger coach, track maintenance machinery including anti-yaw, motor, vertical & lateral dampers.

2.Q: Does your lab own authoritative certification to verify damper performance?

A: We equip CNAS & CMA dual-certified advanced railway damper lab, same advanced level as China Academy of Railway Sciences & Southwest Jiaotong University, leading domestic testing capability to guarantee all damper indexes meet design requirements.

3.Q: Is your enterprise qualified for China high-speed EMU official certification?

A: We’re China’s first private enterprise acquiring formal certification for 300km/h+ high-speed EMU hydraulic dampers, with more competitive product price and stable consistent quality.

4.Q: What after-sale guarantee can we get after order?

A: Complete formal warranty service for all finished dampers, long-term bulk cooperation clients get extra preferential unit price and stable priority supply.

5.Q: Do you support both new production and used damper overhaul business?

A: We supply both new damper manufacturing and old product refurbishment service, same production standard & quality control to help rail operators cut operational cost effectively.

6.Q: Is CR450 high-speed train related damper under development?

A: Our CR450 high-speed EMU hydraulic dampers are currently in formal bench test phase, CR450 is China’s fastest newly-developed high-speed train model.

7.Q: Can clients place small-batch trial order for test verification?

A: Small batch trial purchase is warmly accepted, customers can arrange factory site inspection anytime to check production line and testing lab on spot.

8.Q: What cooperation modes can we sign with your company?

A: Multiple cooperation modes: exclusive regional agent, rail operator bulk procurement, joint R&D for new customized damper products for special rail projects.

9.Q: How do you ensure product comply with international railway standards?

A: All core products pass EN13802, EN13913, TJ/CL284-2014 and related ISO standards with full test report issued by CNAS lab.

10.Q: How about your delivery & comprehensive supply capacity?

A: As experienced China high-speed rail component supplier, stable production chain ensures on-time delivery, stable quality and full-cycle technical support for global partners.

hydraulic shock absorber represented by CRH380D secondary vertical model stands for our strict production & testing standard as professional Chinese railway suspension component supplier.Our certified factory integrates independent R&D, customized manufacturing, authoritative in-house testing and full aftersales service, with mature CRH380 mass production experience and ongoing CR450 test project progress. We sincerely invite global railway operators, metro transit corporations and regional distributors for in-depth negotiation, factory visiting, small-batch trial cooperation and joint new product development to achieve win-win long-term partnership in global railway spare parts market.