W14HH rail fastening system
The W14HH fastening system is masterfully engineered to handle the demands of heavy rail traffic, supporting a robust maximum axle load of 350 kN , and is extensively deployed across continents including Europe, Asia, the Middle East, North America, and Latin America.
Product Parameters
Technical Specifications of the W14HH Fastening System
- Ideally suited for heavy haul applications, this system is designed for use with concrete sleepers on ballasted tracks
- Capable of supporting an axle load of up to 350kN
- Facilitates rail operations at speeds up to 160km/h
- Delivers impressive high longitudinal rail resistance, with a minimum of 9kN
- Ensures safety with electrical resistance equal to or exceeding 5 kΩ
- Features a nominal clamping force for SKL14R of 11.5 kN
- Provides gauge adjustment flexibility in the range of ±10 mm
- Optionally equipped with an anti-abrasion pad to significantly reduce fastener wear and prolong system longevity.
- Every component is designed for pre-assembly at the sleeper manufacturing facility to ensure efficiency and consistency
The complete W14HH fastening system for each sleeper includes the following essential components:
A set of 4 screw spikes DHS35-161
A set of 4 flat washers UIs7
A set of 4 rail clips SKL14R
A set of 4 guide plates Wfp14K700R
A set of 4 plastic dowels SDU25
A pair of rail pads Zw141/175/7
The W14HH type rail fastening system is expertly crafted for heavy haul rail applications, accommodating a maximum axle load of 350 kN.
Each complete set is composed of 4 rail clips SKL14R, 4 sleeper screws DHS35 with accompanying flat washers UIs7, 4 guide plates Wfp-12 700R, 4 plastic dowels SDU25, and 2 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 |