W14HH Rail Fastening System
The W14HH Fastening System is meticulously designed for heavy rail traffic, accommodating a maximum permissible axle load of 350 kN , and is widely used across Europe, Asia, the Middle East, North America, and Latin America.
Product Parameters
Technical Specification of the W14HH Fastening System
- Typical Application - Heavy haul with concrete sleepers on ballasted track
- Axle Load - Maximum of 350kN
- Speed - Maximum of 160km/h
- High Longitudinal Rail Resistance - Minimum of 9kN
- Electrical Resistance - Greater than or equal to 5 kΩ
- Clamping Force for SKL14R (Nominal) - 11.5 kN
- Gauge Adjustment - Range of ±10 mm
- Optionally, the system can be fitted with an anti-abrasion pad to prevent excessive wear on the fasteners, enhancing longevity.
- All components can be conveniently pre-assembled at the sleeper factory, ensuring efficiency and accuracy.
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
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, handling 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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