Electro-hydraulic material handler ER series

The ER series are electrically powered lifting accessories which incorporate an electrohydraulic control unit within the grab body. This means the units only require electrical supplies to operate. This type of equipment can be installed on harbour cranes or overhead cranes and are used in, - Steel plants, - incinerators and biomass plants, - for the handling of waste and slag, - for loading and unloading of ships, - in any business where it becomes necessary to move large volumes of materials. The grabs of the ER range are available in two versions: EV and REV EV: equipped with a Rexroth piston pump and electro-distributor that allows the opening and closing of the equipment while maintaining the electric motor in operation in the same direction of rotation. The plant is equipped with valves that allow, - Pressure control. - The control of the tines during the closure to avoid cavitation. - Maintaining the pressure of the tines even with the motor off or when the pump is in stand-by mode. - Protecting the circuit from overloads induced by excessive stress. The special configuration of the system, the oversizing of the components, the use of variable displacement pumps and the possibility of calibration differentiated between opening and closing, allow a continued use of the equipment without the risk of overheating. REV: the reversible version is equipped with a Parker piston pump, the opening and closing are obtained by reversing the direction of motor. The plant is equipped with valves that allow, - Control of the pressure differentiated in closing and opening. - The control of the tines during the closure to avoid cavitation.