The Nabla Rail Fastener System is widely used in the railway field, especially in Europe, and is favored for its safe and reliable characteristics. It can be found in various track scenes such as trams, light rails, subways, mainline railways and high-speed railways.
The special shape of the Nabla spring is a highlight. When the nut is tightened, this unique shape can generate a dynamic and stable toe load on the rail, which effectively fixes the rail to the sleeper and prevents the longitudinal and lateral movement of the rail relative to the sleeper, ensuring that the track gauge remains stable. On the TGV high-speed line in France, the Nabla Rail Fastener System plays a key role in ensuring the safe and smooth operation of high-speed trains.
In terms of maintenance, the Nabla system is very cleverly designed. The screw design it adopts greatly facilitates maintenance work, makes it easier for maintenance personnel to operate, and also reduces maintenance costs. In addition, the system does not require a base plate, which reduces production costs from a manufacturing perspective and shows advantages at the economic level.
In terms of applicable track types, the Nabla Rail Fastener System is extremely flexible. It can be well adapted to concrete sleepers or plastic substrates in ballasted or ballastless tracks. In some scenarios where there are requirements for track electrical performance, the Nabla system can also meet the requirements. For example, it has high electrical insulation performance, which can effectively avoid problems such as current leakage and ensure the electrical safety of the track system.