Single side bonding system for continuity and earthing applications

Railweb thickness: between 0.49" to 0.87".

This unique system was developed by Cembre in response to a requirement for a version of the rail web bonding system, which could be installed in situations where access is limited to one side of a rail or trackside structure.

Examples include;

• Running rail with check rail in situ
• Switches and crossings
• Circular hollow section stanchions
• Blind holes in thick rail web 

The Single Side Bonding System has been designed around the same basic principles
as Cembre’s existing systems:

• Low electrical resistance due to intimate contact between bush and hole surfaces
• Simple installation method that does not depend on operator skill
• Quick and easy to install (2 minutes for complete installation and assembly)
• Easy to connect/disconnect cables for fault finding/maintenance
• Does not rely on tight hole tolerances
• ‘Extrusion’ installation method provides a seal between the bush and the hole preventing moisture ingress and corrosion, increasing the longevity of the connection

Electrical and mechanical testing has been carried out on the system including:

• Temperature cycling
• High current loading
• Salt chamber corrosion testing
• Mechanical flexion testing

System components are as follows:

a – Electrolytically tin-plated copper bush  type AR61E-1
b – M12 steel expansion bolt
c – locking washer
d – M12 stainless steel self-lock nut

To be installed by: Hydraulic tool type RHTEPE-12-E and BAS-19