W14HH Rail Fastening System
The W14HH Fastening System is meticulously engineered to accommodate heavy rail traffic, supporting a maximum permissible axle load of 350 kN , and is widely adopted across Europe, Asia, the Middle East, North America, and Latin America.
Product Parameters
Technical Specification of W14HH Fastening System
- Typical Application - Heavy haul with concrete sleepers on ballasted track
- Axle Load - Maximum 350 kN
- Speed - Maximum 160 km/h
- High Longitudinal Rail Resistance - Minimum 9 kN
- Electrical Resistance ≥ 5 kΩ
- Clamping Force for SKL14R (nominal) - 11.5 kN
- Gauge Adjustment Range - ±10 mm
- Optionally, the system can be equipped with an anti-abrasion pad to minimize wear on the fasteners.
- All components are pre-assembled at the sleeper manufacturing facility for your convenience.
The complete W14HH Fastening System for each sleeper comprises the following components:
4 pieces of Screw Spike DHS35-161
4 pieces of Flat Washer UIs7
4 pieces of Rail Clip SKL14R
4 pieces of Guide Plate Wfp14K700R
4 pieces of Plastic Dowel SDU25
2 pieces of Rail Pad Zw141/175/7
The W14HH type rail fastening system is adeptly designed for heavy haul rail, supporting a maximum permissible axle load of 350 kN.
One complete set comprises 4 pieces of Rail Clips SKL14R, 4 pieces of Sleeper Screws DHS35 with Flat Washer UIs7, 4 pieces of Guide Plates Wfp-12 700R, 4 pieces of Plastic Dowels SDU25, and 2 pieces of 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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