Rail Height-Adjusting Pad

The Rail Height-Adjusting Pad is a specialized railway component designed to precisely adjust rail elevation and maintain optimal track geometry. Positioned between the rail and sleeper or under rail fastening systems, it provides a simple yet effective solution for achieving accurate rail height alignment during installation or maintenance. Manufactured from premium rubber or composite elastomer materials, the pad offers excellent elasticity, compression strength, and long-term stability. It is resistant to aging, oil, water, ultraviolet light, and extreme temperature variations, ensuring reliable performance in all weather and track conditions.

Each Rail Height-Adjusting Pad is produced through advanced molding and precision cutting technology, guaranteeing uniform thickness and dimensional accuracy. Available in multiple thickness options—typically ranging from 1 mm to 10 mm or customized according to project needs—it allows flexible adjustment for different track designs and conditions. The pad not only corrects height deviations between rails but also contributes to vibration damping, noise reduction, and extended service life of track components. Its durable structure and easy installation make it an ideal choice for both new railway construction and track maintenance projects.

Function & Application
The Rail Height-Adjusting Pad plays a key role in maintaining precise rail alignment, ensuring safe and smooth train operation. Its primary function is to adjust and fine-tune the height of the rail to meet exact engineering requirements, compensating for uneven sleeper surfaces, manufacturing tolerances, or track settlement over time. By ensuring consistent rail elevation, the pad helps maintain proper wheel-rail contact, reducing wear, vibration, and noise during train movement.

In addition to height correction, the pad provides moderate elasticity that helps absorb shocks and distribute loads evenly across the track structure. This protective function reduces stress on sleepers, fasteners, and ballast, preventing premature damage and extending the overall lifespan of the rail system. The pad’s anti-slip surface design ensures firm positioning under the rail, preventing movement even under high dynamic loads.

The Rail Height-Adjusting Pad is widely used in high-speed railways, heavy-haul lines, metro systems, light rail networks, and standard-gauge tracks. It is compatible with various sleeper materials including concrete, wood, and composite types, as well as multiple rail fastening systems. The pad can be stacked or combined in different thicknesses to achieve the desired height adjustment precisely and efficiently.

Easy to install and replace, it requires no special tools and can be quickly fitted during track laying or alignment correction operations. Furthermore, the product meets international railway standards such as UIC, AREMA, and EN, and can be customized in hardness, color, and dimensions to suit different application needs.

In summary, the Rail Height-Adjusting Pad is an essential accessory for achieving accurate rail alignment and improving the stability, comfort, and durability of railway tracks. Its combination of precise adjustability, robust construction, and vibration-damping performance makes it a reliable and cost-effective solution for modern rail infrastructure and maintenance operations.

I. Overview of Railway Track Padding

Rubber track pads (hereinafter referred to as “rubber pads”) are critical components in railway track structures. Installed between rails and concrete sleepers, their primary functions include:

- Absorbing high-speed vibrations and impacts generated by passing vehicles to protect the subgrade and sleepers

- Providing electrical insulation for signaling systems Additionally, due to prolonged exposure to atmospheric conditions, rubber pads must exhibit excellent resistance to natural aging, cold temperatures, and heat. Rubber pads used in subways feature superior vibration damping and low-noise performance.

II. Characteristics of Railway Track Padding

1. Strong shock absorption, anti-aging properties, wear resistance, stability, and resistance to high and low temperatures. Products combine natural rubber, styrene-butadiene rubber, neoprene, HDPE, EVA, and high-density polyethylene. They exhibit high elasticity and resist deformation or fracture across various temperatures.

2. Extended service life with low maintenance and replacement costs.

3. Comprehensive range of models suitable for laying various rails (43kg, 50kg, 60kg) and sleepers (wooden, concrete).

4. Excellent load-bearing capacity, vibration damping, and insulation properties. Highly wear-resistant with minimal compression deformation, superior rigidity, aging resistance, and no mud displacement. Long service life and easy installation. Railway rubber pads significantly enhance rolling stock transport capacity, reduce crossing maintenance frequency, and prevent traffic accidents caused by stalled vehicles.

5. Rubber pads offer a service life exceeding three times that of traditional track plates. Testing confirms stable performance without deformation under applied pressures exceeding 80 tons. Manufactured primarily from rubber using scientific formulations and advanced production techniques, these pads meet railway speed enhancement and environmental requirements while boosting locomotive transport capacity.

Our factory is equipped with multiple guide rail pad production lines featuring machinery for machining, injection molding, rubber refining, vulcanization, forming, and inspection. We have our own rail pad development engineers, designing, producing and inspecting. What’s more, rail pads for high-peed rail are our featured products, including both the elastic rubber plates and height adjustment pads.

The Following are Rubber Rail Pads Parameters：