As a critical component of rolling stock suspension systems, compression springs are designed to store and release mechanical energy, absorb shocks, and maintain constant force between contacting surfaces. Their robust structure enables reliable performance in dynamic railway environments.
They can be divided into primary suspension, also known as a journal box spring, and secondary suspension, also called a bolster spring.
Features
· Surface Treatment: Ultrasonic/high-load rolling prevents decarburization; water jet reduces fatigue cracks.
· Microstructure Control: Ac3-zone quenching enhances strength; Q-I-Q-T treatment improves cold formability.
· Flattening & Grinding: Optimized roller tips minimize twisting; automated process eliminates brittleness.
· Fully Automatic Production Line: End-to-end automation ensures high-precision manufacturing.
Product Performance | Reference Value |
Wire Diameters (d) | 12-70mm |
Coil Diameters (D) | 60-500mm |
Free Height (L0) | 180-1000mm |
Weight (Kg) | 4-160 |
Number of Active Coil (N) | 3-12 or Depend on Drawing |
Elements | Internal Spring and External Spring |
Materials | 60Si2Mn, 60Si2MnA, 60Si2CrVA, 60Si2CrVAT, 50CrV4, 51CrMoV4 and so on |
Certifications | ISO 9001, UIC 822, DIN 2096, EN 13298 |
Usage | Bogie of K2, K4, K8, Y25 with Axle Load of 21t, 22.5t, 25t, etc. |
Export Destination | Have Exported to Vietnam, Pakistan, Namibia, Venezuela, Burma, Thailand, Angola, Sudan, Australia, etc. |
· Expert Manufacturing: Backed by years of experience in ductile iron casting, we utilize advanced processes and cutting-edge technology to deliver superior-quality railway components.
· Strict Quality Control: Every product undergoes rigorous inspection to ensure compliance with international standards and to meet or exceed customer expectations.
· Tailored Solutions: We provide customized services, rapid response to client feedback, and comprehensive after-sales support to ensure long-term satisfaction.
