W14HH rail fastening system
The W14HH fastening system is designed for heavy rail traffic with a maximum permissible axle load of 350 kN , Widely used in Europe, Asia, the Middle East, North America, and Latin America.
Products Parameters
Technical Specification of W14HH Fastening system
- Typical application - heavy haul with concrete sleepers on ballasted track
- Axle load - max. 350kN
- Speed - max. 160km/h
- High longitudinal rail resistance - min. 9kN
- Electrical resistance ≥ 5 kΩ
- Clamping force for SKL14R (nominal) - 11.5 kN
- Gauge adjustment in the range of ±10 mm
- Optionally, the system can be fitted with an anti-abrasion pad to prevent excessive wear on the fasteners.
- All components can be pre-assembled at the sleeper factory
The complete W14HH fastening system for each sleeper consists of the following components:
4 pcs screw spike DHS35-161
4 pcs Flat washer UIs7
4 pcs Rail clip SKL14R
4pcs guide plate Wfp14K700R
4 pcs plastic dowel SDU25
2 pcs rail pad Zw141/175/7
W14HH type rail fastening system is designed for heavy haul rail with a maximum acceptable axle load of 350 kN.
One complete 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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