Dollies and jinkers are auxiliary trailers that share the load between prime mover and main trailer, keeping axle groups within mass limits on heavy moves.
What a dolly does
A jeep dolly sits between the prime mover and the trailer, adding an extra axle group that shares the drawbar load. A jinker is a rear auxiliary trailer that extends the deck and adds axles at the back. Both let us move heavier loads while keeping each axle group within legal mass limits — essential for OSOM moves that still need to respect bridge and pavement ratings.
When we add one
We add a dolly or jinker when the load would otherwise overload the main trailer's axles, when rear overhang needs support, or when a long, heavy item needs a more stable platform. It's standard on platform float work for transformers and mining modules and on heavy low-loader moves for large excavators.
Permit impact
Adding a dolly or jinker changes the combination length, which affects swept path, turning at intersections and the access permit conditions. We re-check the route — particularly tight roundabouts on the Gateway and Logan Motorway interchanges and site access at the Port of Brisbane — whenever the combination changes.
Part of the kit, not a standalone
Dollies and jinkers aren't hired on their own; they're part of how we engineer a heavy move. When you request a quote we'll tell you whether your load needs one and factor it into the indicative rate.
Specifications are indicative only and not a guarantee of any particular unit's capacity. Final trailer selection is assessed per load.