380D Primary Vertical Damper

dampers shock absorbers of CRH380D primary vertical type owns verified performance from 13 items of official type approval test. 

 1. Coating: Paint thickness60~200μm, ISO2409 grade 0 adhesion, 200h neutral salt spray compliant to ISO9227 

 2. Oil tightness: 24h horizontal placement leakage test + bench cycle test, zero oil leakage after full inspection 

 3. Damping control: tension/compression asymmetry ratio ≤10%, smooth indicator diagram without abrupt jump 

 4. Fatigue durability:5×10⁶ low-frequency cycles &6×10⁶ high-frequency cycles, surface temp＜80℃ during long-run test

 5. Strict raw material & hydraulic oil inspection with complete third-party test reports

rail suspension components including our primary vertical damper cover multiple domestic and global rail transit fields besides CRH380D EMU.

High-speed EMU: CRH380 series, CR400 fleet, ongoing CR450 China fastest high speed train prototype project

Urban transit: metro, light rail, intercity EMU full-range dampers customization

Rolling stock: new energy locomotive, passenger coach, heavy freight wagon, large track maintenance machinery

Bogie overhaul: supply new-made dampers & refurbished spare parts for vehicle advanced repair project

primary vertical damper related customization & aftersales service are our core business, below are top 10 frequently asked questions:

Q1:Can your factory customize all kinds of railway hydraulic dampers?A1:Yes, full customized production available for high-speed train, metro, locomotive, freight car, track maintenance machine; covers anti-yaw, motor, lateral, primary&secondary vertical dampers.

Q2:Does your testing lab own authoritative CNAS & CMA certification?A2:Our dual-certified lab reaches same advanced level as China Academy of Railway Sciences and Southwest Jiaotong University to verify all damper performance indexes.

Q3:Is your enterprise qualified for China’s over300km/h EMU formal certification?A3:We are China’s first private manufacturer getting official certification for 300km/h+ high-speed train dampers with cost-competitive price and stable quality.

Q4:What after-sale warranty and long-term cooperation benefit can we get?A4:All products enjoy complete after-sales warranty; long-term bulk clients obtain extra favorable unit price and priority delivery.

Q5:Do you provide both new production and used damper overhaul service?A5:We support new manufacturing and old part refurbishment with identical production standard, helping rail operators cut operational cost efficiently.

Q6:How about the progress of your CR450 high speed train dampers?A6:Our CR450 matching dampers are under formal bench test; CR450 is China’s latest fastest high-speed EMU in development.

Q7:Is small batch trial order acceptable for performance verification?A7:Small trial purchase is welcomed; customers can visit our production base and testing lab for on-site inspection anytime.

Q8:What two main cooperation modes can we sign with your company?A8:Two core cooperation:1.Bulk procurement for rail/metro operators;2.Regional exclusive agent cooperation for global distributors.

Q9:Can your lab carry out independent third-party damper detection service?A9:Yes, CNAS/CMA lab accepts external performance test for various types of railway dampers per EN & Chinese railway standards.

Q10:Can we jointly develop customized new-type dampers for special rail projects?A10:We welcome joint R&D with railway operators and agents to develop tailor-made suspension dampers for customized rail vehicle projects.

dampers shock absorbers represented by CRH380D primary vertical damper fully prove our strict R&D and production capacity as professional Chinese high-speed rail component supplier.

We own in-house advanced testing lab, mature type-test verified production line and complete aftersales system; besides existing CRH380/CR400 mass supply, our CR450 dampers are in testing phase. We sincerely invite global rail operators, metro corporations and distributors for factory inspection, small trial order and joint R&D cooperation to realize mutual win-win development.