Track Components

Dry insulated joints

  • Posted by Lex Smith

Insulated rail joints are required to determine the position of the train for the purpose of safe signal control. Our range is class leading.

Using a high strength steel core, which is encapsulated using an injection moulding process, ensures a close tolerance finished product that delivers an accurate fit on site.

We are one of Europe’s foremost manufacturers of dry-mechanical insulated joint kits, promoted under the Coronet brand.


Our innovative Coronet joint has been specially engineered to offer substantial benefits over existing dry-mechanical insulated joint systems. It has a unique design that delivers the following benefits:


Delivers improved mechanical performance and electrical resistance, even after water immersion. Through better-engineered fit of components and a unique waveform to the web face of the fishplate.


Improved metallurgy of the steel core.


Manufactured by injection moulding around a precision machined steel core the Coronet Joint achieves tighter dimensional tolerance control than any other dry mechanical insulated joint on the market.


Designed for ease of use and rapid on-site assembly. Optimum performance from dry-mechanical joints is achieved when they are installed as a system. This involves accurate cutting/drilling of rails, correct assembly and tightening of the fastenings, followed by periodic inspection of the bolt torque settings.

Much work has been done recently to improve the accuracy of the holes being drilled in rails, this work has focussed both on hole diameter and positioning. This, however, is only of benefit if the insulated joint being used can replicate this improved accuracy. In drilling trials where both new and worn rails were drilled to accept dry-mechanical joints, Coronet Joints were repeatedly installed without excess force being required to insert all 6 bolts (of the correct diameter). Joints are available in four or six hole options to suit CEN56 E1 & CEN60 E2 rail profiles.

Manufactured and tested to the exacting requirements of the Network Rail specification, the Coronet joint has met all the criteria as set out in RT/CE/S/023.


The performance characteristics compare favourably with steel based joints in tensile and shear values. The range is available in many rail sections and is particularly favoured in light rail applications. Due to its lightweight construction ease of maintenance.


  • Complete system including fasteners
  • Reduced installation time
  • High insulation properties
  • Extensive fatigue testing conducted
  • Fully retractable from rails for access/maintenance.

Burns Nylon Insulated Fishplates

L.B. Foster Rail Technologies is the manufacturer of the Burns Joint kit, also known as “Burns Treble 6.” Burns kits are available to suit UK rail sections 113A, 98lb and 95RBH. We can supply new complete kits for first time installations or maintenance insulation kits for in situ repair to failed joints.