The Deenik clip (also known as the DE clip, D-type clip, or Deenik Elastic Rail Tension Clamp) is a critical elastic component within a railway fastening system. It is used to secure rails to sleepers or track slabs, serving primarily to prevent longitudinal and lateral rail displacement, ensure reliable rail connections, and maintain stable gauge—all of which are essential for the safe operation of trains.
Deenik clips are utilized in DE-type separate fastening systems. In these systems, steel baseplates are secured using bolts anchored into the concrete bridge deck, with resilient cork-rubber pads placed both beneath the rail and beneath the steel baseplate.
Materials and craftsmanship: Deenik clips are primarily manufactured from high-quality spring steel—commonly grades such as 60Si2MnA, 60Si2CrA, 55Si2Mn, or 38Si7—which offer excellent elasticity and fatigue resistance.
Advantages: Deenik clips feature superior elasticity, consistent clamping force, and high fatigue resistance. They offer a long service life, consist of fewer components, feature a simple design, and provide strong resistance against rail creep.
Applications of Deenik rail clips:
- Fastening systems for concrete sleeper tracks and ballastless tracks;
- Heavy-haul railways, mining railways, and port tracks—with particularly widespread use in regions such as South America and South Africa;
- Suitable for various types of sleepers, including timber, steel, and concrete.
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