Nabla-Type Clip Rail Fastening System
Nabla-Type Clip Rail Fastening System
The "Nabla" clip rail fastening system, also known as "Nabla" rail fastening system, is originally developed by Pandrol. We specialize in manufacturing "Nabla" clip rail fastening systems, including standard and upgraded configurations. It uses Nabla clips (Nabla blades) to apply clamping force on the rail, holding it firmly in position on sleepers. It allows dual-direction adjustment for track gauge and rail height, provides superior electrical insulation, and offers high compatibility with tight-radius curve tracks.
Our upgraded "NABLA" fastening system is derived from the original-generation "NABLA" fastening system. It effectively addresses railway on-site issues such as track gauge widening, with overall improvements in lateral-load resistance, electrical insulation and durability. It features quick and easy installation and is compatible with various rail profiles and track types. Thus, it is ideally suited for modern tram and light-rail projects.

Key Advantages of Our Nabla-Type Clip Rail Fastening System
1. Reduced Maintenance
We select highly wear-resistant insulating and elastic fasteners to resist wear from lateral track loads, significantly reducing the frequency and workload of ongoing track maintenance.
2. Easy Installation
As a professional manufacturer, we continuously optimize the structural design of fasteners. Our components feature simple assembly and enable fast onsite installation, helping save construction labour and shorten project timelines.
3. Reliability
We maintain strict production control for the full Nabla fastening system. Multi-stage inspections are performed on both raw materials and finished products, ensuring the system delivers stable longterm service under complex operating conditions.
4. Excellent Electrical Insulation
We fabricate matching insulating components, using high-grade insulating materials to deliver superior electrical insulation performance, fully meeting the insulation requirements of urban transit lines including subways and trams.
5. Wide Application
Our "Nabla" fastening system is highly compatible and fits many different rail profiles. It is suitable for diverse track applications: trams, metro and regular main-line railways.
6. Lateral Adjustment
Our designed adjustable insulating components allow easy fine‑adjustment of the lateral track gauge, making our "Nabla" Clip fastening system is well‑suited for track sections with complex loading conditions such as small‑radius curves.
Nabla-Type Clip Rail Fastening System Components
Our "Nabla" fastening system consists of the following components: Nabla Clip, Insulator, Screw Spike, Nut and Spring Washer. We specialize in manufacturing a wide range of rail fasteners and can supply all components for the Nabla fastening system. We are able to customize products according to your railway line requirements. Please feel free to contact us for any inquiries.

Nabla-Type Clip Rail Fastening System Technical Parameters
| Part name | Pcs/set | Type | Material | Surface |
|---|---|---|---|---|
| Nabla clip | 2 | Thickness 4mm or 4.5mm | 60Si2MnA, 60Si2CrA | as per customer's requirements |
| Insulator | 2 | UIC54, UIC60, S49 rails | Reinforced Nylon 66 (PA66) | as per customer's requirements |
| Screw spike | 2 | UIC54, UIC60, 50kg rail, 60kg rail | Grade 5.6: 35# | as per customer's requirements |
| Nut | 2 | Per customer's specs | Grade 5: 35# | as per customer's requirements |
| Spring washer | 2 | Per customer's specs | Q235 | as per customer's requirements |
Nabla-Type Clip Rail Fastening System Components Drawings
Below are the "Nabla" fastening systems we supply to our Moroccan clients for their railway projects. Below please find the detailed component drawings and technical specifications for your reference.
1. Adjustable Insulator for Nabla-Type Fastening System

2. Nabla Clip (Nabla Blade) for Nabla-Type Fastening System

3. Plastic Anchor Insert for Nabla-Type Fastening System

Nabla-Type Clip Rail Fastening System Application
We specialize in manufacturing the "Nabla" rail fastening system. It uses Nabla clips (Nabla blades) to apply clamping force on the rail, holding it firmly in position on sleepers. It allows dual-direction adjustment for track gauge and rail height, provides superior electrical insulation, and offers high compatibility with tight-radius curve tracks. Therefore, our nabla rail fastening system is widely used on tram, light rail, metro, main-line and high-speed railway tracks worldwide. We are able to customize products according to your railway line requirements, feel free to contact us.

Dedicated and Experienced Railway Fasteners Manufacturers
We are one of the most dedicated and experienced railway fasteners manufacturers in China. As shown in the figure below, we can manufacture all components of the "nabla" clip rail fastening system: Nabla Clip, Insulator, Screw Spike, Nut and Spring Washer, etc. We also can produce various other railway products, including Rail fasteners: rail clips, rail fish plate, Frozen joint bar, Glued joint bar, Rail brace, Gauge rods; Railway turnouts and parts: rail base plates, slide plates, spacer blocks, Machined Turnout Parts, Complete Turnout. We also supply rail milling trains and railway maintenance tools. We can also customize railway products as your needs. We sincerely welcome customers from all over the world to visit and inspect our factory. Feel free to contact us anytime.

Certification
We are an experienced and reliable manufacturer of railway products, we emphasize quality control, and we have our own professional inspection center and a comprehensive quality management system. Also, our products have passed the ISO9001 quality management system, ISO14001 environmental management system and ISO45001 occupational health and safety management system triple certification, and we have also passed the product certification of China CRCC. We are indeed a trustworthy railway product supplier, Please contact us anytime if you have any needs.


