W21 NT rail fastening system

Introducing the W21 NT Type rail fastening system, meticulously engineered to meet category C and D specifications in accordance with the EN 13481-2 standard, boasting a maximum permissible axle load of 260kN and a minimum curve radius of 150 meters.

This rail fastening system is provided with a rail pad of static stiffness 40 and 70 kN/mm ± 15%.

Key Features:

Due to the mid-loop of the SKL21 clip, which is mounted over the rail foot, this rail fastening solution is characterized
by additional flexibility. This eliminates the possibility of overloading the clip arms and their plastic deformation, as well as prevents rail rotation. The use of different design of the SKL21 clamp, compared to SKL14, translates into the higher clamping force in the rail fastening nod of ≥20 kN. The system meets the EN 13481-2 standard requirements.

Technical Specifications:

Application: Suitable for high-speed and conventional rail systems with concrete sleepers on ballasted tracks
Axle Load: Capable of carrying a maximum load of 260 kN
Speed Capability: Suitable for high-speed (≥250km/h) and conventional rail (≤250km/h) applications
Rail Longitudinal Resistance: Provides a minimum of 9kN, ensuring robust performance in a variety of conditions
Electrical Resistance: Exceeds 5 kΩ, ensuring electrical safety and integrity
Clamping force for SKL21 (nominal): The theoretical minimum clamping force after loading must be
≥ 9kN acc. to DB drawing
Gauge adjustment in the range of ± 10 mm
Possibility to use anti-thief screws with a triangle head shape
All of the components can be pre-assembled in the sleeper factory