Name: China Rail Fastener Spring SKL Clips Manufacturers Suppliers Factory - Gnee Steel
Brand: GNEE
SKU: 296493256

Rail Fastener Spring SKL Clips

Railway Clip is used to fasten the rails to the underlying base plate together with the concrete sleeper. A variety of different types of heavy-duty clips are used to fasten the rails to the underlying baseplate or Sleeper, one common being the E Clip, which is shaped like a stubby paperclip. Another one is the SKL Tension Clamp, which is also the most widely used type all over the world. Others like KPO Clamp and Nabla Clip, also used in different situations.

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Description

Technical Parameters

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Rail skl CLIP Fastening System

The Railway SKL Clip is a high-performance elastic rail fastener distinguished by its omega-shaped (Ω) double-bend geometry, engineered to deliver sustained clamping force through controlled multi-stage deflection. Manufactured from chromium-alloyed spring steel, this single-component fastening solution provides comprehensive rail restraint-vertical, lateral, and longitudinal-while absorbing dynamic loads and accommodating thermal movement without maintenance throughout its service life.

Technical Specifications:

Application Environment	Challenge	SKL Solution	Performance Benefit
High-speed lines (>250 km/h)	Dynamic forces at frequency	Multi-stage deflection	Vibration damping
Heavy-haul corridors	40-ton axle loads	Increased wire diameter (SKL 24)	18 kN clamping force
Sharp curves (<300m radius)	Rail roll tendency	Lateral leg contact	Overturning resistance
Steep gradients (>30‰)	Longitudinal creep	High friction interface	Rail movement prevention
Urban transit systems	Frequent starts/stops	Consistent toe load	Gauge retention

Installation & Maintenance Perspective:

Chromium-silicon alloyed spring steel (52SiCr5 for SKL 12/14, 60Si2CrA for SKL 21/24) provides enhanced hardenability.
Carbon content ranging from 0.50–0.65% delivers optimal balance between strength and elastic recovery.
Controlled phosphorus and sulfur levels below 0.025% ensure clean grain boundaries and fatigue resistance.
Uniform microstructure achieved through precise quenching and tempering at 420–480°C.

Maintenance & Operational Perspective

Functions effectively in ballasted track where settlement requires resilient fastening.
Performs reliably in ballastless slab track where precision positioning is critical.
Suitable for sharp curves where lateral forces demand exceptional restraint.
Compatible with steep gradients requiring high longitudinal creep resistance.
Adaptable to transition zones where track stiffness changes rapidly.