Type WJ-8 Rail Fastening System is a ballastless track fastener system developed to meet the technical requirements of the passenger dedicated line fastener system and to adapt to the laying of the existing shoulder-free ballastless track in Germany.
WJ-8 railway fastener system components
WJ-8 type The fastener system consists of a screw spike, a flat washer, a rail clip, an insulating block, a gauge baffle, a rail under the pad, an iron rail pad, an rail pad under the iron rail pad, and a pre-embedded sleeve positioned on the concrete sleeper or track plate. When the rail height is adjusted, the height-adjusting pad is used (the height of the rail is lowered and the height of the iron rail pad is lowered).
| Specifications for ONE unit of WJ-8 Rail Fastening system | ||
| 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 |
WJ-8 Rail Fastening System Technical Requirements
| Fastener type | WJ-8 type fastener | ||
| Taxonomy | With iron rail pad (thickness 16mm) | ||
| Withstand lateral force | Sustained by concrete shoulders | ||
| Connection with the foundation | Embedded plastic casing | ||
| Embedded member pull-out resistance | Not less than 60kN | ||
| Buckle | Types of | W1 type | Type X2 |
| Buckle pressure | >9kN | 6kN | |
| Strike | 14mm | 12mm | |
| Fastening method | Bolt fastening | ||
| Tightening torque | About 160Nm | About 110Nm | |
| Rail longitudinal resistance | >9kN | 4kN | |
| iron rail pad fastening torque | -- | ||
| Elastic cushion | Setting | A cushion layer (rubber pad or composite rubber pad) is arranged under the rail, and an elastic cushion layer (thermoplastic elastomer foaming pad) is arranged under the iron rail pad plate. | |
| size | Class A | Class B | |
| Under rail rubber pad: 175 × 156 × 4 | |||
| rail pad under the iron rail pad 285×150×12 | |||
| Under-arc cushion stiffness | >300 kN/mm | ||
| Sub-layer cushion stiffness | 30～40kN/mm | 20~30kN/mm | |
| Rail height | High rail surface | 208 | |
| Adjustment amount | 30mm | ||
| Adjustment method | By adjusting the height of the pad between the rail and the iron rail pad to achieve 10mm adjustment; padding the pad on the sleeper bearing groove to achieve 20mm adjustment. The filling pad can be adjusted steplessly. | ||
| gauge | Adjustment amount | ±10mm | |
| Adjustment method | It is realized by replacing the gauge baffles of different specifications. | ||
| Adjustment level | Level adjustment, level 1mm | ||
| Rail joint treatment | In general, when the general gauge adjustment amount is large, replace the joint gauge baffle. | ||
| Applicable to ballastless track | Armless track structure | ||
| Drawing number and standard | Research Line 0604, Science and Technology Base [2007] 207 | ||
| Application condition | 250km/h | 350km/h passenger line | |
GNEE RAIL offers rail fastening systems suitable for various scenarios. We also provide individual rail fasteners, including Railway Screw Spike, Clip and Clamp, High Tensile Bolt with Nut and Washer, Rail Base (Tie) Plate, Rail Fish Plate, Rail Shoulder, Rail Screw and Spike, Fish Bolt with Nut and Washer, Rail Dowel, Rubber and EVA Pad, Crane Rail and Light Rail, and other rail fastening parts. Contact GNEE RAIL for more product information.
