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Product Introduction
The railway fastener system is a key device to ensure the safe and stable operation of railway tracks. It consists of buckling parts, anchoring parts, elastic pads and other parts. From the classification point of view, the SKL series buckles the rails with spring bars, the KPO type relies on buckles to achieve fastening, the Nabla uses spring clips, and the WJ-8 uses a unique spring bar structure.
The SKL3 type in the SKL series uses 60Si2Mn spring steel for the spring bar, which is cost-effective and widely used in ordinary railway trunk lines. It can effectively fix the rails and keep the tracks stable.
The WJ-8 Elastic Clip fastener system is widely used in high-speed rail construction. The materials of its spring bars and insulating parts have been carefully selected and processed. Under high-speed operation conditions of 350km/h and above, it can still maintain good performance, ensure the stability and safety of the track, and help high-speed trains run smoothly.
The WJ-8 railway fastener system is a key connection component for high-speed railway shouldered ballastless tracks. It is mainly composed of spiral spikes, flat washers, spring bars, insulating blocks, gauge baffles, rail pads, iron pads, elastic pads under iron pads, and embedded casings. Through the synergistic effect of various components, the rails are firmly fixed on the sleepers or track plates.
Product Specifications
Specifications for ONE unit of WJ-8 Rail Fastening system
| Item | Specification / Typical Value |
|---|---|
| Fastening System Type | WJ-8 Elastic Rail Fastening System |
| Application | Ballasted track / Concrete sleeper |
| Applicable Rail Types | 50KG, 60KG, UIC50, UIC54, UIC60 (60E1) |
| Design Axle Load | ≤ 25 t (mainline & metro heavy-duty sections) |
| Components per Rail Seat (One Unit) | 2 × W-type elastic clips + 2 × insulating guide plates + 1 × rail pad + 2 × embedded shoulders |
| Clip Material | Spring steel 60Si2Mn / 55CrSi |
| Clip Heat Treatment | Quenched and tempered |
| Clip Tensile Strength | ≥ 1500 MPa |
| Clip Yield Strength | ≥ 1300 MPa |
| Clip Elastic Deflection | 9–12 mm |
| Static Toe Load (per clip) | 9–12 kN |
| Total Clamping Force (per unit) | 18–24 kN |
| Vertical Stiffness (system) | 30–50 kN/mm (with rail pad) |
| Lateral Resistance (per unit) | ≥ 9 kN |
| Longitudinal Resistance (per unit) | ≥ 11 kN |
| Rail Uplift Resistance | ≥ 8 kN |
| Rail Pad Material | Rubber or EVA composite |
| Rail Pad Thickness | 8–10 mm |
| Rail Pad Static Stiffness | 60–100 kN/mm |
| Insulator / Guide Plate Material | Nylon PA6 / PA66 or reinforced composite |
| Shoulder Type | Cast-in |
Classification model
Rail Fastener System WJ-8 is divided into WJ-8A, WJ-8B, WJ-8C and other models according to different operational needs. For example, WJ-8A uses Class A elastic pads, which are suitable for passenger dedicated lines with a maximum speed of 250km/h and freight. WJ-8B and WJ-8C use Class B elastic pads, which are suitable for laying double-block ballastless tracks and CRTS II track plates, respectively, and passenger dedicated lines with a maximum speed of 350km/h.
The elastic pad under the iron pad is made of long-life thermoplastic elastomer material, which ensures that the system has good and lasting elasticity, can effectively buffer the impact force generated by train operation, extend the service life of the track system, and ensure high-speed and stable operation of the train.
Product Installation
Product Packaging & Delivery
Use a plastic transport box with shock-absorbing springs. Multiple shock-absorbing springs are evenly distributed at the bottom of the box, and a plastic tray with adjustable height is installed on the top of the spring. Place the fasteners on the tray, adjust the tray height and fix it with the knob, and paste anti-collision sponges on the four walls of the box. The box cover adopts a press-type sealing design, and the positioning holes at the four corners of the box body are precisely matched with the convex columns when multiple boxes are stacked.
GNEE RAIL is a supply chain management company specializing in international trade of railway engineering fasteners. We integrate high-quality manufacturer resources and establish a 3,000 square meter modern storage center. We innovatively implement the "quality on-site" system and dispatch professional quality inspectors to the cooperative factories to ensure product quality.
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