Drum Stone Floor Grinding, Polishing Machine

The DRUM STONE is our latest patented sander with incredible features and performance.
This revolutionary sander for floors in marble, granite, stoneware, terrazzo, concrete etc. has a unique processing system, completely different from the classic rotating discs, which allows it to do the work of two three-phase satellite sanders together, with a very low cost of the abrasive.
It works with an abrasive cylinder 30 cm wide and 10 in diameter which rotates resting on the floor to be worked up to 2300 rpm. in this case the specific weight exerted by the roller is enormously greater than that of the classic sanders with round discs; the result is a very high abrasive action of this roller and in order to manage and control it, it was necessary to use the inverter to vary its revolutions (in addition to the other advantages that its use entails).
The abrasive cylinders are available in grits from 46 to 3000, their duration is enormous, on average 4500-5000 m2 with an abrasive cost of 2.5 euro cents / m2.
this system patented by us of the abrasive roller that rotates on the surface to be worked leaves it perfect without undulations or depressions
The DRUM STONE works with water but we also have a version with a vacuum cleaner to work dry; the roller is changed in 90 seconds by loosening a simple bolt.
The machine is very silent and easy to operate and also quite light because with the totally different concept of the roller you don't need huge weights to develop a great abrasive action; so much so that the motor needed to make the roller work is only 3 kw.
With the DRUM STONE it is almost essential to skip some grit because it smooths too much, where with a satellite sander you start with the 120 grit and then 200-400-800 on the marble, with the DRUM 100 you start with the 300 grit and then immediately 1000 and enough.
On granite and stoneware its superiority is even stronger, if we start a granite with a satellite with grain 60 and then 120-200-400-800-1500-3000; with the DRUM STONE we pass instead: 200-500-1000-3000. therefore with an even greater time advantage since you skip several grits.
Compared with heavy and bulky American three-phase sanders (with about 9 kw of power and 250-280 kg of weight) it was always decidedly faster.
In a marble floor where there are deep scratches that you would normally eliminate by passing a 60 if not 30 grit, with the DRUM STONE insisting a few seconds really, you can eliminate them with a 200 grit even 400.
On an average striped marble or terrazzo floor it is possible with DRUM STONE to start with a 400 grain and that's it, then polish
The machine has both the regulation of the roller revolutions and its rotation inversion
The DRUM STONE works, thanks to the inverter with the simple 220 volt single-phase and has a removable conduction handle.
in the photo we see the model that is without the water tank (which must be mounted near the conduction handle)
the abrasive roller is inside that front fairing at the bottom,
the lever that you see on the handle forward towards the roller is used to raise or lower it from the surface on which it is working.