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A rail base plate for a 49E1 rail, also known as a sole plate or tie plate for S49 rail, is a steel or plastic composite component that sits between the rail and the sleeper (railroad tie) to distribute loads, provide stability, and prevent wear. It serves to transfer the vertical load from the wheel to the sleeper and ballast, while also holding the rail in place with spikes, clips, or bolts. The specific design and material for a 49E1 base plate or a S49 tie plate depend on the track structure (e.g., ballasted or slab track) and the fastening system being used.
Load Distribution: Disperses the concentrated pressure from the train's wheels over a larger area of the sleeper and foundation.
Stability: Provides a stable platform for the entire fastening system, preventing movement and ensuring precise rail positioning.
Wear Reduction: Protects the sleeper from excessive wear caused by the constant contact with the rail and spikes.
Noise and Vibration Reduction: Can help to dampen vibrations and noise generated by passing trains.
Insulation: May include an insulating layer to prevent interference with track circuit signaling.
Base plates for 49E1 rails are classified by their shoulder design, with options including double-shoulder and single-shoulder plates, and the type of sleeper (tie) they are paired with, such as wooden or concrete. Variations also exist based on their suitability for different applications, like heavy-haul or high-speed lines, and specific drilling patterns or hole configurations.
By Shoulder Design
Double-Shoulder Sole Plate: Features two raised shoulders on both sides of the plate to provide greater stability and a higher holding force, often used on heavy-haul, high-speed, and main railway lines.
Single-Shoulder Tie Plate: Has a single shoulder located at the field end of the plate, with the shorter end placed inside the track. These plates are suitable for lighter rails, from 56 lb to 100 lb.
By Sleeper Type
For Wooden Sleepers: Base plates are specifically designed to be compatible with wooden sleepers, which have different load-bearing characteristics than concrete sleepers.
For Concrete Sleepers: These are designed to interface with concrete sleepers, which are typically used on more modern and heavy-duty rail lines.
By Application and Design Features
For General Use: Standard base plates are available to distribute the weight of the rail and reduce wear and tear for general applications.
For High-Wear Applications: Rails can be supplied in steel grades and configurations that are suitable for high-wear situations.
Drilling Patterns: Base plates can come with various drilling patterns, including:2 holes double-sided,2 holes single-sided,3 holes double-sided,3 holes single-sided and other or no drilling .
Custom Designs: Kunshan Signum Machinery Technology Co.,Ltd can produce base plates based on private designs or specific customer requirements.
Cast Iron/Steel Base Plates: These are commonly used on ballasted tracks with wooden or concrete sleepers. They are typically fixed with rail spikes or screw spikes.
Fastening System: The base plate must be compatible with the specific rail clips, bolts, and spikes used in the track.
Kunshan Signum Machinery Technology Co.,Ltd is able to customize 49E1 Rail Base Plate/S49 Tie Plate according to your drawing and requirements with competitive price.
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Email: admin@rail-fastening.com
Address: 120 Tongjing Road, Lujia Town, Kunshan, Jiangsu 215331 China
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