Tobee THY300-THY400 Hydraulic Sludge Pumps are a new dredging equipment. It is mainly used as an excavator attachment taking place of grab bucket when there is too much water, mud and not suitable for digging. It is driven by the excavator hydraulic system or a separate hydraulic station to pump sand, sludge, slurry, mortar etc. Its wear parts are made of high-strength and wear-resistant chrome alloy. Hydroman hydraulic sludge pump is mostly attached to amphibious excavator, swamp excavator, dredging excavators, or cutter suction dredger, bucket dredgers for dredging operation. Design Features: High performance in heavy duty conditions hydraulic sludge pumps ensure transportation up to 35% of dry mass (sand, gravel etc.) from total pump capacity. Oversized motors are designed for sludge and slurries with solid concentration up to 70% by weight and 1.6 Kg/dm3. The hydraulic drive version is also available to provide higher performance in especially harsh working conditions.