The KPO clamp rail fastening system is a commonly used solution for securing railway tracks. It consists of KPO clamps, iron pads, and bolts that connect the rails to the sleepers. The KPO system employs a rigid connection ensuring that the rails remain firmly fixed in place and preventing track loosening or movement. Its effectiveness in supporting heavy loads and its durability under harsh conditions make it a preferred choice for heavy railways, port transportation, and mining tracks.
KPO Rail Fastening System Technical Parameters
| Part name | Pieces required | Material | Type | Note |
| KPO clamp | 4 | Q235 | KPO3, KPO6, KPO9 | Standard: DIN5906 |
| Screw spike | 8 | Grade 4.6: Q235 Grade 5.6: 35# Grade 8.8: 45# | M24×150mm M24 ×160mm M24 ×180mm | Standard: ISO898-1, UIC864-1 and NF F500-50 |
| HS bolt | 4 | Grade4.6: Q235 Grade5.6: 35# Grade8.8: 45# | HS26, HS32 | Diameter: 22mm or 24mm. Length: 55mm, 65mm, 75mm, 90mm |
| Hex nut | 4 | Grade 5: 35# Grade 8: 45# | As ordered | Standard: DIN985 |
| spring washer | 8 | 65Mn | As ordered | Standard: UIC864-3 |
| Base plate | 2 | Casting iron QT500-7, QT450-10, or forging low carbon steel or high carbon steel; | UIC54,UIC60, 50kg rail, 60kg rail,S49 in ordered size | Standard: UIC864-6 |
SKL rail fastening systems (SKL3, SKL12, SKL14 ) are known for their excellent fatigue resistance and stability and are widely used in European railway systems. It applies to high-speed railway and urban rail transit.
| Item | Quantity | Material |
|---|---|---|
| SKL tension clip | 2 | 60Si2CrA, 60Si2CrA, 38Si7 |
| Ss35 screw spike | 2 | Grade 4.6: Q235 |
| Grade 5.6: 35# | ||
| Grade 8.8: 45# | ||
| Flat washer | 2 | Q235 |
| Plastic dowel | 2 | HDPE, Reinforced Nylon 66 (PA66) |
| Guide plate | 2 | Reinforced Nylon 66 (PA66) |
| Rail pad | 1 | EVA, or rubber |
