THB's slewing ring built withheavy spherical bearing in bronze cage are specially closed bearings used in hydraulic orange peel(cactus) grabs, mechanical round nose grab, diaphragm wall grabs, etc. Hydraulic orange peel(cactus)grabs are used for almost all purposes including handling scrap, wood pellets, domestic waste, etc. THB's slewing ring and hydro motor provides 200° or 360° mechanical rotation, hydraulic rotation 360° or hydraulic rotation 360°.
Mechanical round nose grab made of high wear resistant steel is specially designed for heavy-duty dredging and/or digging purposes for very hard soils mixed with rocks. The pivoting points' bearings are heavy spherical bearing with bronze cage. The diaphragm wall grabs are used for digging diaphragm walls by building tunnels etc. This diaphragm wall is filled with concrete which features carrying water or sand baffling construction.