Nabla Blade with EN13481-5 Standard

The Nabla Blade is a component of a specific rail fastening system that is certified as compliant with the EN 13481-5 standard, which covers fastening systems for ballastless tracks. 

The Nabla Blade Fastening System

• Component: The Nabla blade is an elastic component made of alloy spring steel (e.g., 60Si2MnA) that, when installed with a bolt and nut, creates a high clamping force and stable toe load on the rail to secure it to the sleeper or baseplate.

• Application: The system is commonly used for tram, metro, and light rail applications, and is also suitable for some main lines and heavy haul tracks, including ballasted and slab tracks.

• Design: Its unique design, often described as a thick trapezoidal shovel with a round hole, allows for efficient mechanical installation and consistent application of force. 

The EN 13481-5 Standard

The EN 13481-5 standard is a European Standard that specifies performance requirements for fastening systems used in ballastless tracks (also known as slab tracks) or with embedded rails. 

Key aspects of the standard include:

• Scope: It applies to systems for attaching rails to the surface of concrete or asphalt slabs, for specific maximum axle loads and minimum curve radii defined by categories A to D.

• Testing: It sets requirements for type approval of a complete fastening assembly based on various test methods outlined in the EN 13146 series of standards, including tests for longitudinal rail restraint, clamping force, stiffness, and resistance to repeated loading and environmental exposure.

• Compliance: Compliance ensures the fastening system is suitable for safe, long-term operation on specific types of non-ballasted track, helping to manage noise and vibration and ensure electrical insulation. 

The Nabla Blade and Signum

• Kunshan Signum Machinery Technology Co., Ltd. is a trusted supplier of the Nabla Blade, meeting the EN 13481-5 Standard for railway and transportation infrastructure.

• With years of experience in providing high-quality rail fastening components, Signum specializes in offering Nabla Blades that conform to the strict requirements of the EN 13481-5 standard, ensuring optimal performance and safety in rail applications.

• Our Nabla Blades are engineered for precision and reliability, and we ensure that all our products undergo rigorous quality control to meet international standards. The EN 13481-5 standard is known for its comprehensive specifications on durability and safety, making our blades an excellent choice for rail networks requiring high-performance solutions.

• As a dedicated supplier, we offer both competitive pricing and reliable delivery. Our commitment to customer satisfaction and adherence to industry standards has made us a trusted partner in the rail sector.