Name: China Fasteners Railroad Clip Fast Clips Manufacturers Suppliers Factory - Gnee Steel
Brand: GNEE
SKU: 296987342

Fasteners Railroad Clip Fast 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

Rail Fast CLIP Fastening System

The Railway Fast Clip (commonly referring to the Pandrol Fastclip system) is a torsion-spring elastic fastening engineered to secure rails to sleepers through a threadless, self-tensioning mechanism that eliminates threaded components and torque specifications. Manufactured from precision-rolled spring steel alloys including 38Si7 and 60Si2CrA, these clips utilize a pre-formed "U" shape that transforms into a tensioned clamping position when driven home, creating a calibrated toe load of 8–12 kN through elastic deformation rather than mechanical tightening.

Technical Specifications:

Model Designation	FC1504 Standard	FC1504 Urban	FC1504 Heavy Haul	FC1306 Light Rail
Clamping Force (Toe Load)	10 ± 1.0 kN	8 ± 1.0 kN	16 ± 1.5 kN	3 ± 0.5 kN
Torsional Stiffness	2.5 kN/mm	1.8 kN/mm	4.2 kN/mm	1.2 kN/mm
Vertical Stiffness (with pad)	25–35 kN/mm	15–25 kN/mm	40–60 kN/mm	10–20 kN/mm
Vibration Attenuation (50–500 Hz)	8–12 dB	12–18 dB	5–8 dB	10–15 dB
Fatigue Life (Full Load)	5 Million Cycles	5 Million Cycles	5 Million Cycles	3 Million Cycles
Temperature Range	-30°C to +70°C	-30°C to +70°C	-30°C to +70°C	-20°C to +60°C
Insulator Options	2–8 mm (1mm steps)	2–8 mm (1mm steps)	2–8 mm (1mm steps)	2–6 mm (1mm steps)
Typical Application	Mixed Traffic	Tram/Metro	Iron Ore/Coal	Light Rail/Depot
Gauge Adjustment Range	-8mm to +4mm	-8mm to +4mm	-8mm to +4mm	-6mm to +2mm

Installation & Maintenance Perspective:

Torsional Spring Principle: Unlike bending-dominant E-clips, Fast Clips operate primarily through torsion-the legs twist along their length when driven home, storing energy in torsional deformation that generates consistent clamping force.
Energy Density Optimization: The torsion design achieves higher energy storage per unit mass compared to bending designs, enabling lighter clips with equivalent clamping performance.
Hysteresis Damping: Under cyclic loading, the torsional action produces controlled internal friction (hysteresis) that dissipates vibrational energy as heat, reducing dynamic forces transmitted to sleepers.

Maintenance & Operational Perspective

Pre-Assembled Sleeper Delivery: Sleepers arrive at site with shoulders cast-in and clips pre-installed in parked position, reducing site inventory requirements and eliminating component matching at installation.
Standardized Component Rationalization: One clip size serves multiple rail sections across an entire network, reducing spare parts SKUs and simplifying procurement forecasting.
Compact Packaging Density: Clips are packed in standardized quantities (typically 500–1,000 per pallet) with barcoded labeling enabling digital inventory tracking and automated reordering.

Gnee Professional supplier

Rail Shoulder Fastening System

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