↵Rail E Clip Fastening System
A Railway Fishplate (also termed splice bar or joint bar) is a structural coupling component engineered to mechanically connect two abutting rail ends in permanent way systems. Manufactured from micro-alloyed medium-carbon steel through hot-forging and precision machining, it comprises a symmetrical pair of plates bolted through the rail web to establish continuous load transfer across the joint. Its primary functions include maintaining rail alignment, distributing dynamic loads, compensating for thermal expansion, and preventing vertical/lateral displacement while ensuring electrical continuity in track circuits where applicable.
Technical Specifications:
| Parameter | Standard Fishplate | Premium Fishplate | Insulated Fishplate | Transition Fishplate |
|---|---|---|---|---|
| Material Grade | R260Mn (EN 13674-1) | 60CrMoB (Yield ≥950MPa) | CR260 + glass-reinforced nylon | Dual-material bonded |
| Design Standards | UIC 864, AREMA 4.3.5 | EN 13146-8, TSI 2022 | IRSE 2000, IEC 61373 | Proprietary engineering |
| Bolt Configuration | 4×M24 (8.8 grade) | 6×M27 (10.9 grade) | 4×M24 (insulated sleeves) | Variable (4-6 bolts) |
| Weight per Pair | 23.5kg (for 60kg rail) | 34.8kg (for 60kg rail) | 25.2kg (inc. insulation) | 28-32kg |
| Temperature Range | -40°C to +70°C | -50°C to +85°C | -30°C to +60°C | -40°C to +75°C |
Mechanical & Installation Perspective
Multi-axis load transmission: Engineered to transfer vertical bending moments, lateral shear forces, and longitudinal stresses across the rail joint while minimizing stress concentration factors (typically <2.5)
Controlled flexibility design: Optimized stiffness balance allows 0.5-1.5mm elastic deflection under 200kN load to absorb impact energy without permanent deformation
Fatigue endurance enhancement: Shot-peened surfaces and radiused transitions increase fatigue life to exceed 5×10⁶ load cycles at 25-ton axle loads
Installation, Maintenance & System Integration Perspective
- Forging metallurgy: Hot-forged at 1150-1250°C from 60CrMoB or equivalent steel, achieving grain size 6-8 per ASTM E112 with 850MPa minimum yield strength
- Precision machining: CNC-processed to maintain hole position tolerance ±0.08mm and surface flatness <0.1mm/300mm
- Surface engineering: Multi-stage treatment including phosphating, zinc-flake coating (12-15μm), and torque-control paint ensuring consistent 250-300Nm bolt preload
Gnee Professional supplier
Hot Tags: rail fastening e clip, China rail fastening e clip manufacturers, suppliers, factory, rail clip surface treatment, rail clip non magnetic coating, rail clip locking, rail clip tightening tools, heavy duty rail clips, rail clip loosening tools
