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W21 Rail Fastening System

Introducing the W21 Type Rail Fastening System, meticulously engineered to meet Category C 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. 

Our innovative rail fastening solution is designed to cater to diverse rail infrastructure needs, featuring customizable rail pads with static stiffness options of 70kN for main roads and 40kN for bridges.

Key Features:

  • Enhanced Flexibility: The unique mid-loop design of the SKL21 clip, positioned over the rail foot, ensures superior flexibility, eliminating the risk of clip arm overload and plastic deformation. This innovative design also effectively prevents rail rotation, enhancing safety and durability.

  • Higher Clamping Force: The SKL21 clamp, which has a different design than the SKL14, provides a remarkable clamping force of more than 20kN, ensuring secure rail fastening even in demanding conditions.

  • Compliance: Rest assured, our system complies rigorously with the EN 13481-2 standard, meeting industry requirements and guaranteeing reliability and safety.

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 (SKL21): Provides a minimum nominal force of 10 kN for secure rail attachment
  • Height Adjustment: Facilitated by a versatile W21-REG pad that offers adjustments of +1mm, +2mm, +4mm or any combination
  • Rail Pad Material Options: Choose from foamed PUR or EPDM materials with stiffness options of 40 and 70 kN/mm ±15% to meet specific project requirements
  • Enhanced Security: Optional use of triangular head anti-theft screws for added security
  • Convenient Pre-Assembly: All components can be pre-assembled at the sleeper factory, simplifying installation and reducing downtime