Diamond rocksaws - cutting at all angles
A diamond rocksaw held directly by a standard excavator can only cut effectively in the vertical) plane - this is given by the movements of the excavator arm. Horizontal cutting using the excavator slew for control is possible but not recommended as the control is not fine enough resulting in slow cutting and poor blade life.
There are many occasions where it is desirable to cut in other directions than vertically, for example inof a concrete slab or wall into smaller slabs, or in directions not parallel to the excavator arm such as for trenches across a road. Sometimes limitations of access or safety considerations make it impossible to position the excavator to give the required cutting direction.
Echidna has developed a selection of rail styles for allowing the rocksaw to cut at any angle. The rail is connected to the excavator via a manual or hydraulic rotator or tilt-rotator unit.
The rail system shown in the illustration is a fairly simple model with manual rotation and hydraulic tilt. The saw is driven along the rail at optimum speed.