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 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 Railway Fastener System Technical Parameters
| No. | Item | Performance |
| 1 | Suitable Rail type | Chinese 60kg/m steel rail |
| 2 | Gauge | 1435mm |
| 3 | Rail bottom slope | sleeper or track slab with 1:40 rail bottom slope |
| 4 | Longitudinal resistance of rail | In general sections, the longitudinal resistance of each group of fastener rails is greater than 9 KN; in low resistance sections, the longitudinal resistance of each group of fastener rails is about 4 KN. |
| 5 | System flexibility | The static stiffness of type A pad is 30~40kN/mm, which is suitable for 250km/h passenger dedicated line (taking into account freight); the stiffness of type B pad is 20~26kN/mm, which is suitable for 350km/h passenger dedicated line; the ratio of dynamic and static stiffness is not more than 2.0 |
| 6 | Dynamic and static stiffness ratio | ≤1.5 |
| 7 | Fatigue performance | The fastener system has no damage to all parts after 3 million load cycles, the gauge expansion is less than 6mm, and the buckling force change is ≤20%; the rail longitudinal resistance change is ≤20%; the joint static stiffness change is ≤25% |
| 8 | Insulation resistance | The fastener system is tested in accordance with EN13146-5, and the insulation resistance between the two rails is greater than 3Ωkm, and it meets the requirements for the insulation resistance of the rail circuit. |
| 9 | Harsh environmental conditions | The fastener system can be removed smoothly after the 300h salt spray test described in EN13146-5. |
| 10 | Adjustment amount of rail left and right position | Adjustment amount of left and right position of single strand rail: -5~+5mm; Gauge adjustment amount: -10~+10mm, the adjustment level is 1mm |
| 11 | Adjustment amount of rail height | Adjustable amount of rail height: 30mm |
| 12 | Buckle force and stroke | Commonly used elastic clips (W1 type): single elastic clip buckle pressure is greater than: 9kN, elastic range 14mm; small resistance elastic clip (X2 type); single elastic clip buckle pressure 6kN, elastic range 12mm |
| 13 | Pull-out resistance of embedded dowel in sleeper | ≤60kN |
GNEE RAIL supplies various railway fastening systems, including SKL, KPO, Nabla, FAST, and FIST systems, as well as a wide range of railway fasteners such as elastic clips, spikes, bolts and nuts, fish plates, and fish bolts. Contact us for more product information.