What is WJ-8 rail fastening system
Type WJ-8 rail fastening system, also called type WJ-8 elastic fastener. It is a ballastless track fastener system developed to meet the technical requirements of high-speed passenger lines and to adapt to the installation of existing ballastless tracks without shoulders in Germany. This system is typically used for 60kg/m rails with ballastless slab or tie sleepers.
GNEE is a specialized manufacturer dedicated to producing a comprehensive range of railway fastening systems and components. And we can customize all railway products according to specific requirements.
WJ-8 rail fastening system components
The WJ-8 rail fastening system includes components such as clamp plates, elastic clips, insulators, shoulder blocks, rail pads, washers, bolts, nuts, baseplates, rail clips, and sleepers. Moreover, for adjusting the height of the steel rail, the WJ-8 rail fastening system includes a fine-tuning pad beneath the rail and a lower-elevating pad on the iron backing plate. For more details, you can read the table below.
|
Serial number |
Name |
Quantity |
Material |
Mass or volume |
Remarks |
|
1 |
Spiral spike |
2 |
High quality carbon steel or alloy steel |
1.50kg |
The S2 type is generally used, and the S3 type is used when the height is greater than 15 mm. |
|
2 |
Flat Washers |
2 |
Q235-A |
0.138kg |
|
|
3 |
W1 type elastic clip |
2 |
60Si2MnA |
1.44kg |
The general section adopts the W1 type, the single elastic rail clip buckle pressure is greater than 9kN, and the elastic stroke is 14mm. |
|
X2 type elastic clip |
1.28 kg |
The X2 type is used for the small resistance area. The single spring buckle has a pressure of 6kN and a stroke of 12mm. |
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|
4 |
WJ8 insulation block |
2 |
Glass fiber reinforced nylon PA66 |
79.0cm3 |
Type I, used in general locations. |
|
73.0cm3 |
Type II, used at rail joints. |
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|
5 |
WJ8 gauge baffle |
2 |
Glass fiber reinforced nylon PA66 |
718cm3 |
Normal installation No. 7, select different numbers according to the gauge adjustment. Joint gauge baffle at rail joint. |
|
WJ8 joint gauge baffle |
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|
6 |
WJ8 rubber pad |
1 |
Natural rubber or synthetic rubber |
140cm3 |
Select one of them according to the specific requirements of the line resistance. The composite backing plate is formed by vulcanizing a 1.2 mm thick 1Cr18Ni9Ti stainless steel plate and rubber. Do not use reclaimed rubber |
|
WJ8 composite pad |
Rubber |
110cm3 |
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|
Stainless steel |
0.25kg |
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|
7 |
WJ8 iron rail pad |
1 |
QT450-10 |
6.80kg |
|
|
8 |
WJ8 iron rail pad under the rail pad |
1 |
Thermoplastic elastomer (foaming pad) |
540cm3 |
The static stiffness of the A-type pad is 30~40 kN/mm, which is suitable for the 250 km/h passenger dedicated line (considering freight transportation). |
|
The static stiffness of the B-type pad is 20~26 kN/mm, which is suitable for the 350 km/h passenger dedicated line; the dynamic and static stiffness ratio is not more than 2.0. |
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|
9 |
Pre-embedded casing D1 |
2 |
Glass fiber reinforced nylon PA66 |
115cm3 |
The pull-out resistance of the embedded bushing in the sleeper is not less than 60kN. |
|
10 |
WJ8 under-rail fine-tuning pad |
1 |
Polyethylene injection molding |
25cm3/mm |
According to the specific situation |
|
11 |
WJ8 iron rail pad down the high pad |
2 |
Polyethylene injection molding |
720cm3/10mm |
According to the specific situation |
WJ-8 rail fastening system specification
|
Item |
Quantity |
Material |
|
Rail clip |
2 |
60Si2MnA |
|
Screw spike |
2 |
20MnTiB |
|
Flat washer |
2 |
Q235A |
|
Rail Insulator |
2 |
PA66 |
|
Guide plate |
2 |
Reinforced Nylon 66 (PA66) |
|
Rail pad |
1 |
EVA, or rubber |
|
Tie plate |
1 |
QT450-10 |
|
Plastic dowel |
2 |
HDPE, Reinforced Nylon 66 (PA66) |
|
Rail Adjustable Pad |
2 |
PE |
|
Tie Plate adjustable pad |
2 |
PE |
GNEE, a innovative WJ-8 rail fastening system supplier
GNEE rail specialized in manufacturing and supplying railway equipments, including WJ-8 rail fastening system type and other railway fastening systems, rail fasteners, rail joints, rail tracks, and fastening system components parts for railway construction. Feel free to conatct us.
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