The rail fastening system is an essential component of the railway track structure, consisting of various track fastenings , among others. Its primary function is to securely fix the rail to the sleepers or track slabs to ensure track stability. GNEE RAIL offers various types of railway fasteners, such as rail clips,rail anchor,rail tie plate, dog spikes, fish plates, bolts and nuts, tie plates, etc. In addition to providing standardized products, we can also offer customized services based on customer requirements.
The Nabla Fastening System is an safe and reliable system, most widely used in Europe. It can be used in Tram, LRT, Metro, Main Line and High Speed tracks. The special shape of the Nabla blade generates a dynamically stable toe load on the rails when the nut is torqued.
Nabla Railway Fastener System Composition
| Nabla Clip | Insulator | Screw Spike | Spring Washer | |
| Quantity | 2 | 2 | 2 | 2 |
| Material | 60Si2MnA, 60Si2CrA | Reinforced Nylon 66 (PA66) | Grade5.6:35# | ML08AI |
| Size | 4mm or 4.5mm thick | - | - | 18.25x34x78mm |
| Technical Specification | Hardness:42-47HRC | Density:1.3-1.45g/cm³ | Tensile Strength:≥500Mpa | Chemical Composition(%): |
| 3 million times without breaking | Tensile Strength:≥170Mpa Elongation:≤4.4% | C:0.05-0.10, Mn:0.30-0.60, Si:≤0.1, Cr:≤0.2, P:≤0.035, S:≤0.035 | ||
| Bending Strength:≥250Mpa | Yield Strength:≥300Mpa | |||
| Impact Strength (No gap):≥80KJ/m² | ||||
| Melting Point:250-270ºC | Elongation:≥20% | |||
| Insultion Resistance:≥1X10^8Ω | ||||
| Glass Fiber Content:30-35% Hardness:≥110HRR | Cold Bending:90 degree without crack |
Nabla Rail Fastening Technical Parameters
| Part name | Type | Material | Finish | Remark |
| Nabla clip | Thickness 4mm or 4.5mm | 60Si2MnA, 60Si2CrA | Plain oiled, red color painting, or the other required by customers | Hardness: 42-47HRCFatigue |
| life: 3 millions cycles without breaking | ||||
| Standard: DIN17221, GB/T1222 | ||||
| Insulator | UIC54, UIC60, S49 rails | Reinforced Nylon 66 (PA66) | Black, blue, yellow, green or other colors | Different designs are available. |
| Double head screw spike | UIC54, UIC60, 50kg rail, 60kg rail | Grade 5.6: 35# | Plain oiled, black oxide, galvanized, hot dip galvanized | Bending at 30 degree without crack. |
| Special spring washer | 18.25x34x78mm | ML08Al | Plain oiled, black oxide, galvanized, hot dip galvanized | For protecting the thread of the double end screw spike |
| Hex nut | As ordered | Grade 5: 35# | Plain oiled, black oxide, galvanized, hot dip galvanized | Standard: DIN985 |
| Plain washer | As ordered | Q235 | Plain oiled, black oxide, galvanized, hot dip galvanized | Standard: DIN125 |
GNEE RAIL is an international supplier dedicated to railway fasteners and track fastening components, providing comprehensive solutions for global railway engineering and track maintenance organizations. Our main products include various types of railway fastening systems and a wide range of railway fasteners, such as rail anchors, sleeper bolts, elastic rail clips, gauge rods, fish bolts, nylon gauge blocks, rubber rail pads, screw spikes, and more, suitable for various rail types and construction conditions.
GNEE RAIL not only supplies standardized railway fasteners but also offers custom machining according to customer requirements. Contact us to obtain a more detailed product catalog.