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The rail pad, originally called sole plate, is used when rail is attached to concrete, rather than timber, ties or sleepers. Rail pads function to reduce fatigue cracking of the concrete ties, believed to be driven by impact and vibration from the passing train. It is thought that the rail pads act in two ways: they diminish shock or impact loads by providing compliance, and they reduce (by isolation and perhaps by damping) resonant vibrations excited in the concrete ties (lowest resonant frequency about 200 Hz) and accommodate vibration deflections in the rail sections between the ties (about 0.12mm amplitude, 1000 Hz).
The raid pad prevents rail-sleeper abrasion and the crushing of the sleeper under the rail foot. Rubber rail pads are normally designed to a specified load-deflection characteristic. The initial stiffness of the rail pad is designed to be low so that that their deformations under the springs toe loads is quite substantial. This ensures that the rail pad remains in intimate contact with the rail despite any vertical movements of the latter. When the wheel is over the pad, the latter's stiffness must be high to prevent large movements which can result in the metal spring becoming loose. Such a load-deflection characteristic can be obtained by introducing grooves in the rubber rail pads. Rubber pad or grooved rubber rail pad are made up of rubber or plastic to dampen the shocks of vibrations of a passing train.
We can supply rail pad with a thickness ranging from 5mm to 25mm thick. Pads made of metal bonding are used to reduce extensive vibrations.
Grooved Rubber Rail Pad
Our range of grooved rubber rail pad is very effective to reduce the shocks of vibrations caused by the trains while passing through the tracks. These rail pads are highly demanded in railways due to their robustness, long service life and effective use. With good mechanical features and sustainability, these products can be customized and are available at a reasonable price.
The ray pad is an end product made from synthetic elastomer and is used in heavy crane roads and between rail and supporting structure. It is manufactured in various widths determined according to rail base dimensions and standard length of 12 m. The rail pad may be manufactured in different lengths and sizes due to special demands.
Dramatically Improved Impact Attenuation
1. Noise Suppression
2. Improved Passenger Comfort
3. Extended Track Life
4. Extended Ballast Life
The combination of studded design and specially formulated rubber compound, gives VIP-Polymers patented rail pads a unique high resilience and abrasion resistance. Their superiority to those manufactured from other materials has been proven by their ability to reduce dynamic forces by up to 65%, which is a crucial consideration for railway systems worldwide as they adopt higher speeds and greater axle load.
The resilient crane rail pad is designed to allow the rail to move and rotate by small amounts. When rails are on a pad (called soft mounting), this helps to ensure a more even stress distribution between the crane wheel and rail and also between the rail and the surface on which it is fixed. There are two rail pad types, one for a continuously supported rail and one for discontinuous mounting.
SUYU specializes in producing rail fastening. A rail pad lies between the rails and base plates to keep the rail stable. It can be made of HDPE, EVA, rubber, and EPDM to preclude and buffer impact, increase friction and reduce vibration. We produce the rail pad for E type rail fastening system and SKL type rail fastening system.
| HDPE | ||||
| No. | Technical Parameter | Unit | Technical Requirement | Value |
| 1 | Density | g/cm3 | 0.95-0.98 | 0.95 |
| 2 | Tensile Strength | Mpa | ≥19 | 19 |
| 3 | Elongation | % | >80 | 150 |
| 4 | Melting Point | ℃ | 170-190 | 190 |
| 5 | Insulation Resistance | Ω | ≥1×1010 | 3.5 ×1010 |
| 6 | Hardness | A | ≥98 | 98(A) |
| EVA: Polyethylene 80%, Vinyl Acetate 20% | ||||
| No. | Technical Parameter | Unit | Technical Requirement | Value |
| 1 | Density | g/cm3 | 0.95-0.98 | 0.95 |
| 2 | Tensile Strength | Mpa | ≥15 | 16 |
| 3 | Elongation | % | >500 | 550 |
| 4 | Melting Point | ℃ | 170-190 | 170 |
| 5 | Insulation Resistance | Ω | ≥1×1010 | 5.0 ×1010 |
| 6 | Hardness | A | ≥90 | 92(A) |
| Rubber | ||||
| No. | Technical Parameter | Unit | Value | |
| 1 | Stiffness | KN | 90-130 | |
| 2 | Hardness Shore A | ℃ | 72-80degree | |
| 3 | Electronic Resistance | Ω | ≥ 106 | |
| 4 | Tensile Strength before Aging | Mpa | ≥12.5 | |
| 5 | Elongation before Aging | % | ≥250 | |
Adhering to our quality first policy, SUYU pays great attention to quality control management on our rail pad. We have been granted ISO9001-2008 certificates and have received the production license of China's Railway Ministry on railway products. We have a full set of inspection instruments to ensure all our rail pads are of high quality and up to customers' requirements.
As a leading manufacturer of rail fastening based in China, SUYU can also produce many other railway fasteners, such as track bolt, sleeper screw, track spike, tie plate, rail clips, elastic rail clip, SKL tension clamp, rail shoulder, and so on.
Rail plastic sleeve is pressed in concrete sleeper and assembled with sleeper screws, guide plates and rail clip to fix the rail. Our rail plastic sleeve is made using either HDPE or PA66 and the product color is available in white, black and dark brown.
We deal in all types of fish plate, also known as joint bar, splice bar and angle bar. We have in-house rolling, forging, machining, and drilling and punching facilities to ensure accurate rail fish plate size.
Rail sleeper screw spikes are used to fasten sole plates and ribbed base plates to wooden sleepers. In rail construction with the concrete sleepers, the rail sleeper screw is used in combination with a plastic dowel pressed in the concrete sleeper, indirect or direct fastenings of rails on concrete and wooden sleepers.
A rail spike is a large nail with an offset head that is used to secure rails and base plates to the sleepers in track. The rail spikes are roughly chisel-shaped with a flat-edged point.
Sticking to our quality first policy, SUYU pays great attention to quality control management. We have been granted ISO9001-2008 certificates and have received the production license of China's Railway Ministry on railway products. We have a full set of inspection instruments to ensure all our railway bolt products are of high quality and up to customers' requirements.
We are extremely capable of producing elastic rail clip for any type of toe load and axle load requirements to fix the rails on wooden, steel or concrete sleepers. We offer various elastic rail clip with size steel bar diameter from 12mm to 20mm.
Our rail cast iron shoulders include M.C.I. shoulder manufactured from pearlitic malleable iron and S.G.C.I. shoulder manufactured from spheroid graphite iron.
Rail anchor is manufactured in one-piece construction for spring steel or equal, heat-treated and designed to eliminate creepage of track. The rail anchors provide a large bearing surface against both rail base and tie, avoiding undo cutting and wear, thus prolonging the life of wooden ties.
Tie plates are generally used to take the load of rail and distribute the load to the sleepers offering proven economies. We manufacture all types of base plates suitable for various rail sections, for use on wooden, steel or concrete sleepers and ballast-less tracks used with elastic fastenings on wooden sleepers and 'K' type fastening system.
Adhering to our quality first policy, SUYU pays great attention to quality control management. We have been granted ISO9001-2008 certificates and have received the production license of China's Railway Ministry on railway products.
We produce E type rail insulator and guide plate for SKL rail fastening and Nabla fastening system. The material we use for rail insulator is PA66, with the color white, dark brown and black.
Need reliable railway fastening solutions? Contact us today for more information!
SUYU can offer diversified train wheels like the casting wheel and forging wheel.
SUYU can provide a complete set of rail fastening system of SKL14, SKL12, elastic rail clip system, and Nabal clip system.
SUYU is a specialized rail fastening manufacturer based in China.
