System DFF 300
Rail fastening systems for slab tracks
tension clamp Skl 15
Slab tracks meet all the requirements for combined high-speed and heavy load traffic.
The rail fastening system DFF 300, which can be pre-assembled, is suitable for all methods of slab track installation.
The highly elastic intermediate plate substitutes for the elasticity of the ballast bed. A steel pressure distribution pad, which supports the rail through the interposition of conventional rail pads, is used to improve the load distribution on the intermediate plate.
The rail is held laterally in position by plastic angled guide plates. The rail is permanently tensioned by spring-actuation as a result of the long elastic spring deflection of the tension clamp Skl 15.
The rail fastening system DFF 300 can be adjusted by 30 mm in height and by 20 mm in the track gauge.
The DFF 300 rail fastening system is designed in such a way that it can be fitted directly onto the concrete supporting plate of a slab track by interposition of a 2 mm thick plastic intermediate plate and used as a single supporting point.
In the case of repair or refurbishment, the DFF 300 system can be placed between two failed or damaged supporting points and used as a replacement supporting point.
The rail is held laterally in position by means of plastic angled guide plates which are embedded in a base plate of steel. The base plate itself is secured to the concrete slab of the superstructure construction with 4 rail screws and plastic trenails or alternatively with shear connectors.