What Is a Tension Rail Clip
Like other rail fasteners, the main function of a rail clip is to fasten the railway sleeper and the steel rail together. The rail clip is considered one of the best ways to ensure that rails do not move, bend, warp or lift under traffic. The clip presses the rail foot against the base plate with a defined elastic force, and measured data show that each elastic rail clip can bear roughly two tons of force on the track before its capacity is reached. This combination of elastic pressure and high capacity is what keeps the rail geometry stable.
The E1609 E1809 E2055 E2091 Series
The E-type elastic rail clip is a key component in railway fastening systems used to secure rails to sleepers. Models E1609, E1809, E2055 and E2091 are internationally recognized standard types offering excellent clamping performance and fatigue resistance. They suit various rail profiles and sleeper configurations. The series also includes E1813, E2001, E2007, E2009, E2039, E2056 and E2063, all produced from 60Si2MnA spring steel with a hardness of 44 to 48 HRC and a minimum clamping load of 950 kg.
Specifications and Unit Weights
The E1609 uses 16 mm wire and weighs 0.43 kg, the E1809 and E1813 use 18 mm wire at 0.61 kg and 0.62 kg, and the 20 mm series covering E2001, E2009, E2039, E2007, E2055, E2056 and E2063 weighs 0.80 kg per piece. All models are rated at a minimum clamping load of 950 kg with a hardness of 44 to 48 HRC. Special dimensions and higher strength materials can be produced on request for custom fastening projects.
Surface Coatings for Different Climates
E-type clips can be supplied with various surface coatings such as hot dip galvanizing, oxide black, Dacromet or powder coating to enhance corrosion resistance and adapt to different climatic environments. Hot dip galvanizing is recommended for coastal and humid regions, oxide black suits moderate dry environments, and Dacromet gives excellent protection where chemical corrosion is present. The coating choice should be matched to the line environment and the expected maintenance interval.
Performance Features
E-type tension clips provide constant clamping force that ensures firm contact between rail and sleeper. They offer excellent fatigue resistance and maintain their elasticity after millions of load cycles. The compact structure allows easy installation and maintenance, and the series is suitable for high speed railways, heavy haul railways and urban transit systems. Because the clip geometry is simple, inspection is quick and replacement does not disturb the rest of the fastening assembly.
Selection, Maintenance and Common Misconceptions
Confirm the clip model against the rail foot width, base plate and sleeper type before ordering, and verify the toe load and coating requirements. During installation, seat each clip fully on the rail foot and guide plate before applying torque. During maintenance, look for permanent deformation, cracks and coating damage, and replace any clip that no longer returns to its original shape. Record the batch and model for traceability.
A common misconception is that the clamping force equals the breaking force of the clip. The rated clamping load describes the working toe load, while the clip can bear a much higher ultimate force. Another error is mixing coated and uncoated clips on the same line, which creates uneven corrosion behavior. It is also wrong to assume that a deformed clip has recovered its elasticity; once the elastic range is exceeded, the clip must be replaced.
Frequently Asked Questions
What is the main function of a tension rail clip? It fastens the sleeper and the steel rail together with elastic pressure and prevents rail movement, bending, warping and lifting.
Which models are internationally recognized standard types? E1609, E1809, E2055 and E2091 are standard types, with the wider E series including E1813, E2001, E2007 and E2009 also available.
What clamping load does the E series provide? The series is rated at a minimum clamping load of 950 kg per clip with a hardness of 44 to 48 HRC.
Which coatings can be applied to E-type clips? Hot dip galvanizing, oxide black, Dacromet and powder coating are available, selected according to the site climate.
Are E-type clips suitable for high speed and heavy haul lines? Yes, their constant clamping force and fatigue resistance suit high speed, heavy haul and urban transit applications.
When should a clip be replaced? Replace clips with permanent deformation, cracks or coating damage that reduces corrosion protection.
