ABSTRACT
Track or wheel mounted power unit with an articulated front bucket, their primary function is to scoop up loose materials and deposit them into an attendant transport vehicle. Graders machines are similar in concept to bulldozers in that they have a long, slender, adjustable mould blade, which is usually slung under the centre of the machine. Track or wheel mounted power unit with an articulated front bucket, their primary function is to scoop up loose materials and deposit them into an attendant transport vehicle. Backacters machines are suitable for trench, foundation and basement excavations and are available as a universal power unit-based machine or as a purpose-designed hydraulic unit. A range of bucket types and widths are available for trenching operations. Multi-purpose excavators versatile machines are fitted with a loading/excavating front bucket and a rear backacter bucket, both being hydraulically controlled.
