400 MFlex

CUSHIONING. STABILIZING. OPTIMIZING.

In many urban rail networks, the challenge is not top speed. It is the constant stop-and-go operation, sensitive surroundings and increasing demands on passenger comfort and quality of life. Therefore, the rail infrastructure has to do more than just ensure safe and efficient operations. It is also about protecting the surrounding environment from vibrations, while keeping installation practical and on-site complexity low.

This is exactly where our 400 MFlex® comes in. Designed for ballasted and even more effectively for slab tracks, the system was developed for applications that require maximum vibration mitigation without making installation unnecessarily complex.

Your challenge meets our solution

When rail traffic passes close to homes and sensitive buildings, vibrations become part of everyday life. For operators, this creates a challenge that goes beyond infrastructure alone: the track must perform reliably while helping protect the surrounding environment. Our 400 MFlex® is designed for exactly these situations. The cushions at the support points and the M-Generation clamp form a powerful duo, combining outstanding damping performance with stability, easy installation and safe operation.

Maximum track stability: Significantly increased stability, by virtue of innovative materials and components

Longer service life: > 1,500 Hz natural frequency ensures maximum robustness

Sustainable track construction: M7 uses innovative micro-alloyed steel to reduce CO₂ emissions

Efficient noise protection: Rail dampers reduce vibrations at the source before sound can even be transmitted into the air

Welcome to the new era of track construction!

With 400 MFlex®, rail infrastructure becomes quieter, more adaptable and easier to install. Where demanding environments require more than standard elasticity, the system offers a practical solution with strong damping performance and low complexity. This helps operators address critical vibration challenges without adding unnecessary effort to installation and maintenance.   

Designed for maximum vibration mitigation: Targeted vibration reduction of more than 15 dB for highly vibration-sensitive applications.  

Modular, low-complexity solution: Simplified assembly reduces installation time, manpower and overall cost on site.

Quick and cost-effective installation: Installation on common sleeper designs using standard track tools, with no hydraulic presses or special equipment required. 

High damping performance should not automatically mean a highly complicated system. We follow a different approach: modular where needed, reduced where possible and practical for both new projects and upgrades. 
Low system complexity: Optimized design simplifies installation and maintenance, reduces on-site risks, and shortens installation times - resulting in greater planning certainty and reliable project implementation.
Easy component replacement: Individual components can be replaced more easily, supporting efficient maintenance over the lifecycle.
Modular design: Our system concept supports flexible adaptation to different project requirements and applications.

Built for easy track work

Different projects require flexible adaptation in the track. 400 MFlex® supports this with practical adjustment options and a low-complexity design that keeps installation efficient on site.
Convenient adjustments: Flexible adaptation to installation requirements by up to + 30 mm in height and up to ± 20 mm in track gauge.
Quick installation: Compatible with common sleeper designs and installable with standard track tools – without hydraulic presses or special equipment.
Suitable for new and existing lines: 400 MFlex® can be used for newly built projects as well as infrastructure upgrades.

cellentic® & Vossloh protect: Higher performance. Lower effort.

cellentic® - Maximum rail deflection. Optimal load distribution. Tilt protection.

Reliable damping of structure-borne noise and forces – resistant to all environmental conditions.

Vossloh protect – Environmentally friendly. Maximum protection. Longer service life.

Effective corrosion protection against moisture, salt, and environmental influences for long-lasting components and reduced lifecycle costs.

Screw-Dowel Combination

The screw-dowel combination ensures permanently secure tensioning, even under heavy loads and extreme conditions.

Impressive technical data 

The technical data demonstrates the performance of the fastening system with examples, although this always depends on external factors and influences. The reference values are based on the requirement standard DIN EN 13481-2 and DIN EN 13481-5; other applications are proven and can be provided based on request.

	UTS
Axle Load	≤ 18 t
Speed	≤ 140 km/h
Curve Radius	≥ 80 m
Height Adjustment	+ 30 mm
Gauge Adjustment	± 20 mm