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General characteristics of skl21 railway fastener system

SKL 21 Rail Fastening System

SKL21 Rail Fastening System Specification

  • Tension clamp Skl21 -4 units;
  • Screw spike Ss 25/Uls 7 -4 units;
  • Angled Guide Plate Wfp-14K12 -4 units;
  • Plastic dowel -4 units;
  • Rail Pad 148/185/6- 2 units;
  • Application: High-speed Lines
  • Customization: Available

SKL21 Rail fastening system is suitable for pre-assembly at factory, the manufacturer will warrant that the fastener system and fasteners are comply with last version of EN 13481 standard. SKL21 Raiilway Fastener System will be C class mentioned it EN 13481-1 standard and will warrant to use safely up to 300 km/h speed.

SKL21 Rail Fastening System Parts

Part name Type Material Finish Remark
SKL21 tension clip Dia. 13mm 60Si2CrA, 38Si7 Plain oiled, color painting, or the other required ones. Hardness: 42-47HRC
Fatigue test: When the clip spring deflection reaches 9.1mm and the swing deflection is 1.42mm, the fatigue life will be 5 millions cycles without breaking.
Standard: DIN17221, GB/T1222
Ss35 screw spike M24×150mm
M24 ×160mm
M24×180mm
Grade 4.6: Q235
Grade 5.6: 35#
Grade 8.8: 45#
Plain oiled, black oxide, galvanized, hot dip galvanized, Dacromet and sherardized Standard: ISO898-1, UIC864-1 and NF F500-50
Plain washer Uls7 Q235 Plain oiled, black oxide, galvanized, hot dip galvanized, Dacromet and sherardized Standard: EN10025, EN10139
Plastic dowel For different sizes of screw spike HDPE, Reinforced Nylon 66 (PA66) Black, blue, yellow, green or other color For insert into concrete sleeper
Guide plate UIC54, UIC60, 50kg rail, 60kg rail, and other sizes as ordered Reinforced Nylon 66 (PA66) Black, blue, yellow, green or other color Different designs are available.
Rail pad UIC54,UIC60, and size as ordered EVA, or rubber Black, blue, yellow, green or other color Different designs are available

SKL21 Railway Fastener System factory will have 3.1 and/or 3.2 certificate according to EN 10204 standard. W21 fastening system and fasteners’ tests (EN 13146 [1-9]) will be applied to the whole fastening system and fasteners and related standards (except EN 13146-8. This test will be done if the Administration requests) For SKL21 rail fastener system, static and dynamic stiffness tests of the under sleeper elastic pad will be done according to EN 13146-9 standard. The rail fasteners’ tests will be done according to the last version EN standards.

After factory acceptance, if there is a standard change then the test will ve repeated. The tests to be done for the parts of the SKL21 rail fasteners will be done according to the updated version of the EN, DIN, ISO standards. All of the parts of the SKL21 fastener system can easily ve replaceable. The SKL21 railway fastener system will be protected against overturn of the rail and overloading the spring parts. The non metalic parts of rail fasteners’ will be made of a material to endure air temperature (-35, +75 oC) and high corrosion conditions. It will be possible +-10 mm horizontal adjusting at the track. Therefore, the system will be designed so that it can be done in 2,5 mm steps.

Inspection machine

  1. Brinell Hardness Tester
  2. Carbon and Sulfur Analyzer
  3. Rockwell Hardness Machine
  4. Automatic Impact Testing Machine
  5. Metallographic Microscope
  6. Automatic High-speed Analyzer
  7. Fatigue Testing Machine
  8. Metallographic Specimen Polishing Machine
  9. Metallographic Specimen Pointing Machine
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