W14HH rail fastening system
The W14HH fastening system is engineered to withstand the demands of heavy rail traffic, supporting a maximum permissible axle load of an impressive 350 kN , Renowned for its reliability, this system sees extensive application across continents, serving critical rail infrastructure in Europe, Asia, the Middle East, North America, and Latin America.
Products Parameters
Technical Specification of W14HH Fastening system
- Ideal for use in heavy haul operations, this system pairs seamlessly with concrete sleepers on ballasted tracks
- Boasting a maximum axle load capacity of 350kN
- It supports speeds reaching up to 160km/h
- Providing exceptional longitudinal rail resistance with a minimum threshold of 9kN
- Electrical resistance is maintained at a robust ≥ 5 kΩ
- The SKL14R rail clips deliver a nominal clamping force of 11.5 kN
- Offering gauge adjustments within a flexible range of ±10 mm
- For enhanced durability, the system can be optionally equipped with an anti-abrasion pad, reducing wear on fasteners.
- For streamlined installation, all components are designed for pre-assembly at the sleeper factory
The complete W14HH fastening system, designed for each sleeper, incorporates the following precision-engineered components:
4 pcs of screw spike DHS35-161
4 pcs of flat washer UIs7
4 pcs of high-tensile rail clip SKL14R
4 pcs of robust guide plate Wfp14K700R
4 pcs of durable plastic dowel SDU25
2 pcs of rail pad Zw141/175/7 for enhanced track stability
W14HH type rail fastening system is meticulously crafted for heavy haul rail operations, accommodating a substantial maximum axle load of 350 kN.
A comprehensive set includes 4 pcs of rail clips SKL14R, 4 pcs of sleeper screws DHS35 with flat washer UIs7, 4 pcs of guide plates Wfp-12 700R, 4 pcs of plastic dowels SDU25, and 2 pcs of rail pads Zw141/175/7, ensuring robust and reliable track performance.
Technical Parameters
| Part name |
Item |
Technical requirement |
Remark |
| SKL14R clip |
Type |
Dia.14mm |
Application for different rail types |
| Material |
60Si2Mn |
Chemical composition(%): C: 0.57, Mn: 0.75, Si: 1.73, Cr: 0.07P:≤0.015, S: ≤0.006 |
| Finish |
Plain oiled, painting, or upon request |
500 hours salt spry test |
| Hardness |
42-47HRC |
|
| Fatigue life |
When clip spring deflection is 9.1mm, swing is 1.42mm, fatigue life is up to 3 million cycles without breaking. |
|
| Standard refers to |
DIN17221, GB/T1222 |
|
| DHS35-161 screw spike |
Type |
M24x161mm |
|
| Grade |
Grade 5.6: 35# |
Tensile strength: ≥500Mpa Yield strength: ≥300Mpa Elongation: ≥20% Cold bending: 90 degree without crack |
| Finish |
Plain oiled, oxide black, zinc plated, hot dip galvanized, Dacromet, Sherardizing |
500 hours salt spry test |
| Standard refers to |
ISO898-1, UIC864-1, and NF F500-50 |
|
| Flat washer ULS7 |
Type |
Uls7 |
|
| Material |
Q235 |
|
| Finish |
Plain oiled, Oxide black, Zinc plated, Hot dip galvanized, Dacromet, Sherardizing |
500 hours salt spry test |
| Standard refers to |
EN10025, EN10139 |
|
| Plastic dowel SDU25 |
Type |
For different sizes of screw spike |
|
| Material |
Reinforced Nylon 6 (PA6) |
Density: 1.15g/cm3 Tensile strength: 66.3Mpa Elongation: 31.3% Melting point: 228ºC Insulation resistance: ≥2.8×1012Ω Hardness: ≥114HRR |
| Color |
Black |
|
| Guide plate Wfp14k 700R |
Type |
UIC54,115RE rail, and size as ordered |
|
| Material |
Reinforced Nylon 6 (PA6+30%GF) |
Density: 1.39g/cm3 Tensile strength: 165Mpa Elongation: 3.5% Melting point: 226ºC Insulation resistance: ≥1.9×1012Ω Glass fiber content: 30-35% Hardness: ≥114HRR |
| Color |
Black |
|
| Rail pad Zw-141-175-7 |
Type |
UIC54, 115RE rail, and size as ordered |
|
| Material |
TPE (Thermoplastic Elastomer ) |
Density: 1.09g/cm3 Tensile strength: 4.23Mpa Tensile Modulus: 2.97Mpa Melting point: 200-220ºC Shore hardness: ≥40D |
| Color |
Black |
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