Ed SERIES ELECTRO HYDRAULIC THRUSTERS ACC. TO DIN15430

Figure 1: Electrohydraulic Thrustors according to DIN 15430 - in principle

Electro hydraulic thrustors are compact closed systems, consisting of an electric motor and a hydraulic unit. In the switched-on state the electric motor in the lower part of the housing drives the impeller wheel of the hydraulic unit lying above. The produced hydraulic pressure delivers the working fluid under the piston that pushes the piston rod to the stroke end. In the switched-off state or by power cut the pump stops operating, the oil pressure falls very quickly and the piston rod returns to its start position.

A fast return of the piston rod can be reached when inserting a re-setting spring (a brake spring) internally or against an external load (spring force with lever acting) or using a fast switching when normal piston lowering time is too long.

The hydraulic unit is in a closed housing together with the tank. The oil can be checked and refilled from an external oil filler inlet. The thrustors are supplied ready for assembling, colour coated and filled with oil. They have to be fixed with bolts in the bores of the lug and of the piston rod head.

The piston stroke is either determined by a limit stop positioned within the thrustor housing or outside of the unit.

Figure 2: Electrohydraulic Thrustor size 250-60 to 800-120

Figure 3: Electro Hydraulic Thrustors size 1300-60 to 4000-120

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