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Rail Movement Joints "Scarf Type"
Rail Movement Joints "Scarf Type"
The expansion rails for small and medium range of movements are made from halved flat-bottom rails or full-head rails. Some railways use this type of rail movement joint for securing the end of a continuously welded track. For securing the gap in the running edge (dependent on design) a check rail is required for medium expansion lengths.
Advantages
- Short length
- Economical solution for short movements
- Depending on design, no welded joint
Technical characteristics:
| Material grade Designation | for stock rail | and switchblade | Tensile Strength | Hardness[HB] |
| R260 (S900) | X | X | min. 880 N/mm² | 260 - 300 |
| R350HT (S900 HSH) | X | X | min. 1175 N/mm² | 350 – 390 |
| Expansion length | ± 50 to ± 200 mm |
| Speeds | for low and medium speeds |
| Axle loads | for low and medium axle loads / annual loads |
| Requirements | for low and medium stability |
