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Product Introduction
The SKL fastener system is an important component to ensure the fixation of rails in railway track construction. Through scientific mechanical design, the rails are firmly fixed on the sleepers. The system uses high-quality alloy materials and high-performance rubber products, and has good mechanical properties and environmental adaptability after strict quality inspection.
SKL1 serves ordinary railway construction with its economical and reliable characteristics; SKL2 optimizes the mechanical properties of spring bars to meet the needs of regional freight railways; SKL3 achieves efficient vibration reduction in urban subways with its unique double-layer elastic pad; SKL12 is specially designed for the characteristics of high-speed rail running at high speed and large load; SKL13 is reinforced to adapt to heavy-duty railways with large axle weights and large transport volumes; SKL14's quick-install structure design increases installation efficiency by 40%, which is suitable for railway emergency repair projects; SKL15 accurately adapts to the installation requirements of ballastless track plates to achieve stable and reliable connections.
SKL3 12 14 Clamp Railroad tie fasteners system is a different specification type of SKL type rail fastener system.
Common features
Basic composition: The three types of fastener systems are usually composed of SKL spring clips, sleeper screws (such as SS35 screw spike), flat washers, plastic sleeves, guide plates and rail pads.
Material and manufacturing: SKL Clip is usually made of forged spring steel through hot forging process, with good strength and elasticity, uniform microstructure, and can withstand the dynamic load caused by train operation.
Function: Used to fasten the rails to the railway sleepers, maintain the track gauge, prevent the rails from moving vertically and horizontally relative to the sleepers, and at the same time buffer and absorb the impact of the train on the rails.
Differences
Application scenarios: SKL12 type fasteners are generally used for ballastless tracks. They are split fasteners for sleeper track plates without concrete shoulders. SKL3 and SKL14 are used in both ballasted and ballastless trackbeds.
Structural dimensions: The three types differ in specific dimensions to accommodate different rail types, sleeper sizes, and installation requirements. For example, the size of the SKL3 spring clip may be relatively small, suitable for some light rails or places with special requirements for the size of the fastener; the size of the SKL14 spring clip is larger, and the buckling force provided is also larger, which can better fix heavy rails.
Buckling force and performance: The W-shaped design of SKL14 provides higher safety. Its two highly elastic, independently acting spring arms can stably press the rails. The curved part in the middle can also serve as additional tilt protection. When the spring deflection is 13mm, the clamp on each set of rails can reach a buckling force of 20kN. The buckling pressure of SKL3 and SKL12 varies according to their design and application scenarios. Generally speaking, the buckling pressure of SKL12 is smaller than that of SKL14 to adapt to the characteristics of ballastless track. The buckling pressure of SKL3 is between the two or adjusted according to specific needs.
SKL3 Clamp Railroad tie fasteners
| SKL3 Tension Clamp Specification | |
| Materials | 60Si2Cr, 55SiMn, 38Si7 |
| Hardness | HRC 42-47 |
| Fatigue life | 3-5 million cycles |
| Surface | Plain Oiled, Oxygen Black, Zinc Plated, Hot Dip Galvanized, Dacro |
| Spec | ø13 |
SKL12 Clamp Railroad tie fasteners
SKL14 Clamp Railroad tie fasteners
Product Application
As a professional international trade platform for railway standard parts, GNEE RAILWAY RAILWAY is committed to connecting China's high-quality manufacturing with global railway construction needs. The product catalog contains more than 1,500 specifications of railway fasteners, all of which come from manufacturers that have passed IRIS certification. We have established a scientific quality assessment model and implement monthly performance appraisals for cooperative factories. Equipped with a multilingual customer service center, it provides services in 12 languages including English, French, and Chile. The innovative use of "blockchain + Internet of Things" technology realizes full visualization of the supply chain.
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