Convenience and ease of handling are what separate outstanding vibratory rammers from those that are merely good.
The ACR 60 and 68 rammers from Ammann are ideally suited to handling different tasks and multiple operators.
Recent innovations to these machines has included:
Compaction work in narrow trenches or close to walls typically restricts the view around the machine and the operator’s manoeuvrability. The guide grip on Ammann ACR rammers has an especially open design to overcome these challenges. The operator can see the position of the foot from above at any time and accurately steer the machine.
A shortened grip accessible from all sides gives him full control over the machine. He can turn the rammer by 180 degrees – even in tight conditions in trenches and ditches – skilfully avoiding obstacles along the way. The new throttle makes stopping and starting the machine easy if an obstacle in its path has to be removed by hand.
The throttle replaces the petrol tap and also regulates the engine speed. Additionally, elastic grip bearings reduce the rammer’s hand-arm vibration to less than 7 m/s2. This contributes toward the operator’s health and also prevents early fatigue during operation.
The working height is individually adjustable to accommodate changes in working conditions or a change of operator. Minor corrections to the working height can be made during operation via the adjustable grip. This can be helpful, for instance, if the operator encounters different inclines when compacting trenches in landscape gardening. Changing the construction height of the rammer body provides even more room for manoeuvre.
The ACR 60 and 68 are equipped as standard with a 280 mm wide and 340 mm long foot respectively.
Four bolts make foot replacement quick and easy. An operator working in confined spaces _ for instance, in ditch and trench compaction _ can switch to the narrowest working width. By contrast, he can choose the wide variant if he wants to maximise surface coverage.
The operator can use the foot to compact substrate next to walls and curbs without having to incline the machine. Depending on the foot, the rammers can therefore achieve a considerable surface coverage of 325 m2 per hour with a compaction depth of up to 50 cm on non-cohesive substrates.