Atlas Copco has since long period of time designed rotation units for DTH-drilling . These units has been assembeled for example on drilling equipment in mines drilling upwards witch is extremly tough for an rotation unit. All units are lubricated with grease . They are equipped with hydraulic as well as air driven motors . Also with or without floating adapter.

The rotation units are flat on the lower surface and are attached to the cradle with 2 x 4 pcs of screw.