EMG ELDRO Thrusters

EMG ELDRO Thrusters


EMG ELDRO Thrusters

Download EMG ED Thruster Brochure

Available in stock


Time Delay/Lowering Valve

Set/Release Limit Switch

High-temp kit

Explosion Proof

Class “H” Insulation

Breather Valve


The basic components of the ELDRO® Thruster, i.e. electric motor and closed hydraulic system are coaxially assembled to form a functional unit.  The working fluid of the hydraulic system serves as
the operating medium for the generation of thrust.

Method of Operation

In the switched-off state (de-energised), the hydraulic piston with the piston rod is at its lower limit.In the switched-on state, the centrifugal pump delivers the working fluid under
the piston and produces there hydraulic pressure, i.e. the thrust of the ELDRO®unit. As a result of this pressure, the piston travels along its path against the internally fitted braking or re-settingspring or against an externalload.The work resulting from the product offorce x distance’ is transmitted via thepiston rod and the pressure lug to thedevice to be operated. Thus, the piston
can either travel the total stroke distance or the externally reducedstroke lengths.In accordance with the hydraulic
transmission principle, at each end position of the piston, motor power consumption decreases relative
to power intake for lifting action.Simultaneously the pressure within the thruster reaches its maximum value.The driving motor is therefore less loaded when the piston is at rest. In thatway the ELDRO® Thruster becomes insensitive to mechanical overloads e.g.blocking of the brake. The result of all these factors is that electrical thermalprotection is unnecessary.The thrusters are equipped with
asynchronous motors. Mains voltage fluctuations therefore have minimum influence only on the function of the thrusters as the motor speed is primarily frequency dependent, and less voltage dependent.
When the thruster is in the is connected state the piston returns to its original position under the impact of the external force (braking spring or weight).Except for the starting and running down phases of the motor, the liftin gand lowering speeds are linear. The response times obtained depend on the magnitude of the load as well as on the viscosity of the working fluid injected,which in turn is effected by the ambient temperature.

ED Thruster Brocure Complete1ED Thruster Brocure Complete4 ED Thruster Brocure Complete3ED Thruster Brocure Complete4 ED Thruster Brocure Complete5

Ed 30/5

Ed 30/5

Ed 50/6

Ed 50/12

Ed 201/6

with inductive explosionproof with mechanical with two inductive with build-in c-spring
limit switch version limit switch limit switches and damping spring






EMG ELDRO Ed 121/6

EMG ELDRO Ed 185/6

EMG ELDRO Ed 201/6

EMG ELDRO Ed 301/6

EMG ELDRO Ed 50/12

EMG ELDRO Ed 80/12

EMG ELDRO Ed 121/12

EMG ELDRO Ed 201/12

EMG ELDRO Ed 301/12

EMG ELDRO Ed 185/16

EMG ELDRO Ed 301/15

EMG ELDRO Ed 350/20