Rail pads are elastic polyurethane mats which are interposed between steel rails and railway sleepers to protect the sleeper top from wearing and impacting.
Why do rail elastic pads need regular replacement?
Rail elastic pads need regular replacement because constant heavy loads, vibrations, and environmental exposure (UV, temperature swings) cause them to degrade, lose elasticity, crack, and deform, which compromises their crucial functions: reducing noise/vibration, protecting sleepers, and maintaining electrical insulation, leading to unsafe tracks and costly damage if ignored.
Reasons for replacement:
- Material Fatigue & Aging: Rubber naturally breaks down from repeated stress (fatigue) and environmental factors like ozone, sunlight (UV), and extreme temperatures, making it brittle or soft.
- Loss of Elasticity & Damping: As they age, pads can't absorb shock and vibration effectively, leading to increased noise, rougher rides, and more stress on the track components.
- Deformation & Cracking: They can permanently deform or develop cracks and tears, compromising their cushioning and support, as noted in.
- Compromised Safety: Worn-out pads can cause track instability, misalignment, and premature wear on rails and sleepers, increasing accident risk.
- Environmental Strain: Harsh weather (heat, cold, rain) and exposure to chemicals accelerate deterioration, shortening their life.
When to replace:
- Visual signs: Cracks, tears, visible deformation.
- Performance signs: Increased noise, rougher ride, excessive vibration.
- Proactive replacement: Scheduled replacement (e.g., every 8-25 years) to prevent failure, as monitoring subtle cues can be missed.
Key functions of pads that fail
- Shock Absorption: Dampen impact from trains.
- Vibration Dampening: Reduce noise and vibration.
- Track Protection: Shield sleepers and rails from wear.
- Electrical Insulation: Isolate signaling systems.
GNEE RAIL provides exceptional elastic rail pads of various types for high-speed railways, normal-speed railways, and cranes. Especially the rail pads made of rubber, EVA, TPEE, and HDPE are very popular with customers. Our railway rubber pads fit the rails such as UIC54, UIC60, BS80lbs, BS100lbs, etc. We have more than 130set of machines in our production lines which can reach an annual production capacity of up to 2000, 000 pieces of rail pads. We offer a wide range of rail pads and other track materials at competitive prices.