System KS 24 – the modern solution for ribbed baseplates

The approved fastening solution for the ballasted track with wooden sleepers is the KS track superstructure: its ribbed base-plates provide stability for both the track and fastening system and compensate the deflection of forces caused by traffic. The ballast bed, however, is flexible and transfers these loads homogeneously into the substructure. Furthermore, it absorbs noise and vibration caused by rolling trains. 

The KS 24 impresses with its flexibility

The flat geometry of the tension clamp Skl 24 allows the installation within the rail joint area and can meet higher requirements on electrical resistance when used with an additional insulator. In addition to the common applications on wooden sleepers, the fastening system can also be used on steel, concrete, or plastic sleepers.

AFPco surface coating

Coating for T-head bolt & its nut is done with high quality. Surface coating type can be specially produced according to the customer's needs and order.

The W-shape of the Skl 24 provides safety

For meeting the required creep resistance two highly elastic, independently acting spring arms steadily hold the rail down; the middle bend is used as an additional tilting protection. With its wooden and concrete fatigue strength, it is able to resist the dynamic vertical movements that are caused when the vehicle rolls over the rail. Due to the permanently acting tension, Skl and screw cannot loosen and therefore, they are maintenance-free.

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Travel comfort through optimum rail deflection

The railway track must be elastic to compensate forces caused by running trains. The highly elastic cellentic components of the fastening system take over this job in addition to the ballast. The KS 24 system with cellentic rail pad allows rail deflection and can optimally distribute occurring vertical forces. The result: Protection of track. Its elasticity is adapted to the traffic load to achieve optimum rail deflection: load distribution is at the maximum without overloading the rail. Furthermore, the cellentic component damps the vibrations caused by the unevenness of the track and the wheels; structure-borne track vibration is minimized. The result: travel comfort, safety through smooth running, as well as increased lifetime of track components and vehicles.

Simplified demonstration: one axle of a two axle bogie

Creep resistance and rail tilting protection

 To allow optimum deflection for the rail, its fastening must respond in an elastic way. Therefore, the Skl 24 has a long spring deflection: When forces are applied by a train, its spring arms remain in contact with the rail foot in each situation. For this purpose, the rail is continuously clamped in a force-fitted way by the two spring arms with a spring deflection of approx. 14 mm and a toe load of approx. 9 kN. With this, also a high creep resistance is achieved: When the trains accelerate/decelerate, the rails remain in position; dangerous open fracture gaps due to broken rails are avoided. Simultaneously, a small gap between the middle bend and the rail foot of the rail has exactly the play required for operation. If the rail tilts excessively, e.g. in narrow bends, high forces are applied to the tension clamp. The Skl 24 is able to resist them: Rail movements are compensated by the middle bend after the gap has been overcome, and the spring arms are not overstretched.

Load-deflection-curve t-headed bolt