A rail fastening system is the whole set fasteners that are used to join the rails and railroad ties (or other type of rail foundation). Normally, rail fastening system is consist of rail spike, rail bolt, rail clip, tie plate, rail pad and plastic dowel, etc. Rail fastening system is also known as an intermediate coupling part.
Railway fastening system plays a role in fixing rails to the sleepers, maintaining the gauge and preventing longitudinal and lateral movement of the rail relative to the sleeper.
Nabla Railway Fastener System
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.
Structurally, a Nabla clip rail fastening system contains these parts like nabla clips, insulator, double end screw spike, special spring washer, hex nut and plain washer.
|
Part name |
Type |
Material |
Surface |
Remark |
|
Nabla clip |
Thickness 4mm or 4.5mm |
60Si2MnA, 60Si2CrA |
Plain oiled, red color painting, or the other required by customers |
Hardness: 42-47HRCFatigue without breaking 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 |
18.25×34×78mm |
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 |
Nabla Rail Fastening System Composition
| Item Name | Rail Nabla Clip | |||
| Type | E clip (e1809, e2006,e2007,e2009,etc) | |||
| Skl clip (skl1,skl3,skl12,skl14) | ||||
| Or the type by customers' drawings | ||||
| Material | 60Si2MnA | 60Si2CrA | 55Si2Mn | 38Si7 |
| Chemical composition(%) | C:0.56-0.64, Mn:0.60-0.90, Si:1.60-2.00, Cr:≤0.35, P:≤0.03, S:≤0.03 | C:0.56-0.64, Mn:0.40-0.70, Si:1.40-1.80,Cr:0.70-1.00 P:≤0.03, S:≤0.03 | C:0.52-0.60, Mn:0.60-0.90, Si:1.50-2.00,Cr:≤0.35 P:≤0.03, S:≤0.03 | C:0.35-0.42, Mn:0.50-0.80, Si:1.50-1.80, P:≤0.03, S:≤0.03 |
| Hardness | For e clip: 44-48HRC | |||
| For skl clip: 42-47HRC | ||||
| Fatigue life | for Dia.18 is 3 millions cycles without breaking | |||
| for Dia.20 is 5 millions cycles without breaking | ||||
| Surface | plain (oiled), Oxide black, color painting, HDG, Zinc Plating... | |||
| Standard refers | DIN17221, BS970, GB/T1222 | |||
| Specifications |
| Size: 23×174 |
| Grade: 4.6, 5.6, 8.8, 10.9 |
| Raw Material: 35# |
| Raw material: Q235, 35#, 45# |
| Surface Treatment: Plain (oiled), Bluing, Zinc, HDG, etc |
GNEE RAIL offers a variety of rail fastening systems, including the high-speed WJ series rail fastening system, type IV rail fastening system, fast clip rail fastening system, and SFC fastening system. We also offer individual rail fasteners such as rail clip, dog spike, screw spike, railway anchor, railroad tie plate, and rail gauge rod. Contact us for more information.
