S49 Ribbed Base Plates In Railway

S49 ribbed base plates are critical track components used to support and secure S49 (49E1) rails, which weigh approximately 49.39 kg/m. These plates are placed between the rail and the sleeper (tie) to distribute heavy axle loads, maintain precise track gauge, and provide the necessary 1:20 or 1:40 inward inclination (cant) for optimal wheel-rail contact.

Key Functions

• Load Distribution: They increase the bearing surface area, preventing the rail from cutting into wooden sleepers or causing excessive stress on concrete ones.

• Gauge Maintenance: Ribbed shoulders hold the rail firmly in place, preventing lateral movement or "spreading" under high-speed or heavy-haul conditions.

• Vibration Damping: Often used in systems like the GEO fastening system, they can be paired with elastic pads to reduce noise and mechanical wear.

• Structural Stability: Underside ribs improve the "grip" on the sleeper and prevent the plate from shifting or settling, especially on concrete tracks. 

Technical Specifications & Models

Manufacturing Materials

• Hot-Rolled Steel: Often used for high-volume, standard strength plates.

• Casting (Ductile Iron): Preferred for more complex ribbed geometries that require high vibration damping.

• Forging: Used for specialized, high-strength requirements. 

Signum Rail Fasteners specializes in rail tie plates, specifically for 115RE, 136RE, s49, UIC60 rail sections. We currently support North American infrastructure projects by providing forged,rolled and cast plates. We’d love to send over our latest technical data sheets and lead times for your maintenance cycle if you need.