What we have developed

Trenching Systems Australia has developed a concept that not only addresses the issues of safety facing personnel, but has developed a machine that will make the bedding process faster, simpler and very economical.

By taking an overall assessment of the safety issue, it became apparent that many ;concerns could be overcome quite easily by removing the personnel from the trench altogether. Not only is the labourer safe from trench collapse, they are free from possible injury by taking away the need for heavy manual labour.

This approach and thinking led to the development of a prototype trench bedding machine that was successfully tested on site late in 2006. The trial, though not conducted over a fully excavated trench for safety reasons, proved very successful. It quickly became clear that the concept machine provided the desired bedding consistency, easy and safe operation and the ability to complete the task in a fraction of the time. The trial also highlighted several items that required attention to make the machine safer and even more accurate than the prototype.

The Trench Bedder

The result is a Western Australian designed and manufactured trench bedding machine that meets all the required criteria of safety, productivity and simplicity.

The Trench Bedder uses tried and tested belt delivery technology from the agriculture industry to deliver a predetermined amount of sand to the bottom of the trench. After being loaded from the side by any type of loader, the Trench Bedder is towed by a special type of tractor and straddles the trench as it delivers product. The delivery rate is determined by 3 separate factors - belt speed, gate opening and ground speed. These 3 factors allow the operator to have almost infinite rate control and can deliver any desired amount of sand to the base of the trench. The delivery funnel at the rear is able to be adjusted from 800mm to 1100mm to fit the width of the trench being filled.

The ability to control the sanding rate also means the Trench Bedding Machine can be used to cover the sides and top of the pipe or cable being layed with sand prior to backfilling with excavated earth. This allows for better and more economical use of imported material as well as leaving a more consistent covering over the pipe.


Hopper Capacity: 11.59m3 (17.38 tonne of sand based on sand Specific Gravity of 1500kg/m3)
Unladen Weight: 3560 kg
Laden Weight: 20940kg
Belt Width: 1100mm lugged PVC (with adjustable discharge chute width from 800mm to 1100mm)
Belt Drive: Hydraulic drive Motor via chain and 20:1 reduction gearbox
Door opening range: 10mm to 350mm
Tyre size: 500/60 - 22.5 High Floatation tandem tyres
Track width: 2862mm track centre (2362mm inside wheels)
Dimensions: Length: 7232mm    Width: 3362mm      Height: 2211mm