Name: China Customized Railroad Fastener SKL Clip Manufacturers Suppliers Factory - GNEE RAIL
Brand: GNEE
SKU: 294553176

Railroad Fastener 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

↵Rail SKL Clip Fastening System

Railway SKL clips, also known as "Spring Clip KL," are a specialized type of elastic rail fastening component developed by German railway technology. Characterized by their unique double-spring design with symmetrical arms, these clips provide exceptionally consistent clamping force through a controlled bending mechanism. Manufactured from high-grade spring steel, SKL clips function as the primary clamping element in various direct fixation systems, offering superior vibration damping, electrical insulation, and long-term fatigue resistance for modern rail networks.

Technical Specifications:

Model Variant	Target Clamping Force (kN)	Spring Constant K (kN/mm)	Steel Grade	Primary Application	Special Feature
SKL 1	12-14	45-55	54SiCr6	Light Rail Transit	Low installation force
SKL 3	14-16	55-65	51CrMoV4	Mainline Passenger	Standard high-speed
SKL 12	18-22	70-80	60SiCr7	Heavy Freight Lines	Extra creep resistance
SKL 15 Stainless	13-15	50-60	1.4310 (AISI 301)	Coastal/Tunnel	Corrosion immune
SKL 24	22-26	85-100	52MnCrB4	Extreme Heavy Haul	Mining/40t axle loads
SKL B	10-12	40-45	54SiCr6	Tramway Systems	Low vibration emission
SKL TSI	15-17	60-65	51CrMoV4	Cross-border EU	TSI 2014/1302 compliant

Application Scenarios

High-Speed Rail Corridors: Widely implemented in German ICE and European high-speed networks due to their proven stability at speeds exceeding 250 km/h and excellent resistance to dynamic loading forces.

Urban Metro Tunnel Sections: Particularly valued in underground applications where their symmetrical design allows for uniform stress distribution on concrete slab tracks, reducing maintenance needs in inaccessible areas.

Heavy Haul Mineral Lines: Adapted versions are deployed in mining and freight corridors where their robust construction withstands extreme axle loads up to 40 tons with minimal permanent deformation.

Maintenance & Operational Perspective

Precision Installation Requirements: SKL clips require specialized hydraulic or mechanical tensioning tools for proper installation, ensuring exact pre-load values that eliminate the need for subsequent adjustments.
Non-Destructive Testing Compatibility: Their symmetrical design allows for ultrasonic testing and magnetic particle inspection without removal from the rail seat, enabling predictive maintenance programs.
Corrosion Management Strategy: While typically zinc-flake coated, critical installations use stainless steel variants (1.4310/AISI 301) to combat corrosion in coastal or tunnel environments with high humidity.