Name: China Track SKL Clip Manufacturers Suppliers Factory - Track SKL Clip Vendors - Gnee Steel
Brand: GNEE
SKU: 298234297

Track SKL Clip

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, V-shaped tension clamp engineered for elastic fastening systems on concrete sleepers, characterized by its distinctive double-arm design and vertical insertion mechanism. Manufactured from high-grade spring steel through precision hot-forming and subsequent heat treatment, this clip operates on a pure bending principle where the arms are deflected outward during installation to generate controlled clamping force against the rail foot. The SKL designation denotes a standardized interface with cast-in shoulders, enabling consistent preload application across thousands of track kilometers.

Technical Specifications:

Parameter	Specification	Value / Characteristic
Design Classification	V-type tension clamp	Double-arm symmetrical
Material Grade	Spring steel (e.g., 38Si7 / 52CrMoV4)	Yield strength ≥ 1,200 MPa
Nominal Clamping Force	Per clip at rail foot	9 kN – 15 kN (dependent on variant)
Installation Stroke	Vertical arm deflection	18 mm – 25 mm from free position
Corrosion Protection Standard	Multi-layer coating	Salt spray resistance ≥ 1,000 hours

Installation & Maintenance Perspective:

Vertical Insertion Mechanism: Designed for installation using a hydraulic or manual setting tool that applies vertical force, compressing the arms outward into the shoulder pockets without requiring lateral hammering.
Deflection-Limited Design: Incorporates built-in stop features that prevent over-compression during installation, ensuring consistent clamping force regardless of operator technique.
Positive Lock Engagement: Audible and tactile feedback during installation confirms full seating of the clip arms into the shoulder detents, eliminating ambiguity in field verification.

Maintenance & Operational Perspective

Progressive Stiffness Curve: Exhibits non-linear spring characteristics where initial deflection requires lower force, with stiffness progressively increasing as rail displacement approaches maximum limits.
Lateral Restraint Optimization: The V-shaped geometry provides inherent lateral stability, resisting rail rollover tendencies without requiring additional guide components beyond the shoulder interface.
High-Frequency Decoupling: Spring mass and geometry are optimized to avoid resonance with typical train-induced vibration frequencies, preventing harmonic amplification that could accelerate fatigue.