W14HH rail fastening system
The W14HH fastening system is masterfully engineered for heavy rail traffic, supporting a robust maximum axle load of 350 kN. , and is extensively utilized across Europe, Asia, the Middle East, North America, and Latin America,.
Products Parameters
Technical Specification of the W14HH Fastening System
- Ideal for heavy-duty applications, particularly with concrete sleepers on ballasted tracks,
- it accommodates axle loads up to a formidable 350 kN,
- while enabling speeds up to an impressive 160 km/h.
- Its high longitudinal rail resistance of at least 9 kN ensures stability,
- with electrical resistance measured at a reliable ≥ 5 kΩ.
- The SKL14R delivers a nominal clamping force of 11.5 kN,
- and allows for gauge adjustments in a flexible range of ±10 mm.
- For added durability, an optional anti-abrasion pad can be integrated to guard against fastener wear.
- All components are designed for seamless pre-assembly at sleeper factories,
ensuring a streamlined installation process. The complete W14HH fastening system for every sleeper is composed of the following essential components:
4 pcs of robust screw spikes DHS35-161,
4 pcs of precise flat washers UIs7,
4 pcs of reliable rail clips SKL14R,
4 pcs of durable guide plates Wfp14K700R,
4 pcs of resilient plastic dowels SDU25,
and 2 pcs of sturdy rail pads Zw141/175/7.
The W14HH type rail fastening system is meticulously designed for heavy haul rail, supporting axle loads of up to 350 kN.
A full assembly includes 4 pcs of rail clips SKL14R, 4 pcs of sleeper screws DHS35 paired with flat washers UIs7, 4 pcs of guide plates Wfp-12 700R, 4 pcs of plastic dowels SDU25, and 2 pcs of robust rail pads Zw141/175/7.
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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