The Co-Bolt® aluminium extrusion body technique allows us to build our bus bodies using a system of bolted gusseted joints.
Because buses are exposed to continuous vibration and stresses due to dynamic loading, welded joints can fracture and fail. Volgren’s bolted system requires no welding, and results in a much longer joint life.
For operators, that means far superior reliability than a traditional steel bus and is one of the main reasons why we’re able to offer a 15-year warranty on Volgren buses’ aluminium structures.
Co-Bolt® also ensures that, in comparison to traditional buses, Volgren buses:
- Have fewer components – no self-cutting screws or rivets
- Take fewer hours to assemble, and so can be delivered in a timely manner
- Are easier to repair and service
- Are more environmentally friendly –chromate-free screws, aluminium is easily recycled