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Primary suspension is the set of components located between the axlebox and the bogie frame in a rail vehicle. It absorbs track-induced shocks and reduces vibration transmission. Babacan Rubber manufactures rubber-to-metal laminated primary suspension mounts reinforced with S355 J2+N steel, with hydraulic damping options on request.
Further reading: Train suspension & primary suspension (Babacan Group) →
Primary suspension mounts are key rubber-metal components used between the axle box and the bogie side frame in railway vehicles such as trains, subways, trams, and freight wagons. These mounts—often known as laminated rubber springs or chevron springs—serve to isolate vibration and absorb shock, ensuring smooth and stable travel.
Where Are They Used?
- At the connection between the axle and the bogie
- To absorb vertical and lateral loads
- In railway vehicles like metro, tram, and locomotives
- In high-speed trains and freight wagons
- To ensure ride comfort and vibration damping
What Is Their Function?
- Vibration Absorption: Reduces high-frequency vibrations caused by track irregularities and transitions.
- Load Distribution: Minimizes impact transfer to the bogie and frame, extending system life.
- Curve Adaptability: Allows axle movement during turns, reducing wheel and rail wear.
- Ride Stability: Improves passenger comfort with a smoother, safer ride.
Structure & Material Properties
- Laminated rubber-metal construction
- May include internal voids or chevron-shaped slots
- Made with high-resistance rubber for aging, heat, and fatigue durability
- Combined with high-strength steels like S355 J2+N
- Some models include hydraulic damping (hydrospring systems)
Key Advantages
- Smoother ride and cargo stability
- Reduced maintenance costs and extended service life
- Minimized wheel and rail wear
- No lubrication or moving parts required
- Improved mechanical durability and simplified bogie design
Technical Summary Table
| Feature | Description |
|---|---|
| Application Area | Between axle box and bogie frame |
| Structure | Laminated rubber-metal, voided or chevron-cut |
| Function | Absorbs vertical/lateral/longitudinal vibrations and loads |
| Benefits | Smooth ride, less maintenance, longer life |
Conclusion
Primary suspension mounts play a critical role in modern railway vehicles by enhancing vibration isolation, ride stability, and component longevity. From urban transit to high-speed rail systems, these mounts are essential for reliable, safe, and comfortable operations.
For more details, feel free to contact us or view our technical catalog.
Where Is Primary Suspension Used?
- ✓ Between axle and bogie in trains
- ✓ In metro, tram, and light rail vehicles
- ✓ In freight wagons
- ✓ In high-speed passenger trains
What Does Primary Suspension Do?
Primary suspension systems absorb track-induced shocks and reduce vibration transmission to the bogie. They help:
- ✓ Distribute dynamic loads evenly
- ✓ Reduce wheel and rail wear
- ✓ Enable better axle movement during curves
- ✓ Improve passenger comfort and safety
Babacan Rubber's Primary Suspension Solutions
Babacan Rubber manufactures high-performance rubber-to-metal laminated primary suspension mounts using custom rubber compounds. Our parts are reinforced with S355 J2+N steel and offer high fatigue and aging resistance. Hydraulic damping options are also available upon request.
Advantages
- ✓ Excellent vibration isolation
- ✓ Low maintenance requirements
- ✓ Extended wheel and rail life
- ✓ Fire-resistant materials compliant with EN 45545-2
- ✓ Enhanced passenger comfort
For more information about primary suspension systems, please contact us or explore our technical catalog.
Related products
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Frequently Asked Questions
What is a primary suspension mount?
Primary suspension refers to the components located between the axlebox and the bogie frame in rail vehicles. Babacan Rubber manufactures rubber-to-metal laminated primary suspension mounts reinforced with S355 J2+N steel, with hydraulic damping options on request.
Which vehicles use your primary suspension mounts?
They are used between the axle and bogie in metro, tram and light rail vehicles, freight wagons and high-speed passenger trains, absorbing track-induced shocks and reducing vibration transmission.
Can you produce custom primary suspension mounts for export?
Yes. We offer custom rubber compounds and hydraulic damping options and ship worldwide; lead times are confirmed with your quotation. See our export & international shipping page or contact us.