W14HH rail fastening system
The W14HH fastening system is meticulously crafted to cater to the demanding needs of heavy rail traffic, boasting an impressive maximum permissible axle load of 350 kN. , This innovative system is widely embraced across Europe, Asia, the Middle East, North America, and Latin America,.
Products Parameters
Technical Specification of W14HH Fastening System
- Optimally suited for typical applications in heavy haul scenarios, featuring concrete sleepers on ballasted track.
- Axle load - reaches up to a formidable max. of 350kN.
- Speed - can achieve a remarkable max. of 160km/h.
- Provides high longitudinal rail resistance, with a minimum threshold of 9kN.
- Electrical resistance is robust, standing at ≥ 5 kΩ.
- Clamping force for SKL14R (nominal) - delivers at 11.5 kN.
- Gauge adjustment is versatile, accommodating a range of ±10 mm.
- Optionally, the system can be enhanced with an anti-abrasion pad to prevent excessive wear on the fasteners, extending their lifespan and efficiency.
- All components are conveniently pre-assembled at the sleeper factory, ensuring seamless integration and installation.
The complete W14HH fastening system for each sleeper is composed of the following meticulously chosen components:
4 pcs screw spike DHS35-161
4 pcs Flat washer UIs7
4 pcs Rail clip SKL14R
4 pcs guide plate Wfp14K700R
4 pcs plastic dowel SDU25
2 pcs rail pad Zw141/175/7
The W14HH type rail fastening system is expertly engineered for heavy haul rail applications, supporting an impressive maximum axle load of 350 kN.
A comprehensive set includes 4 pcs rail clips SKL14R, 4 pcs sleeper screws DHS35 with flat washer UIs7, 4 pcs guide plates Wfp-12 700R, 4 pcs plastic dowels SDU25, 2 pcs 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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