EM Brno s.r.o.

Jílkova 124
615 35 Brno
Czech Republic

GPS: 49°11'50.52"N, 16°38'8.74"E

Electrohydraulic actuators of the series EP

Technical Information

Drive unit consists of built-in three phase induction motor that is driving propeller wheel of hydraulic pump. 

Reverse run of the device after disconnecting from network is secured by mass of controlled device or by means of built-in pulling springs. All outside components including terminal box are aluminium castings.


Velocity of pull bar movement can be changed in small range by means of control screws, which are placed under the filling hole on the top cover (motion gets slower by tightening) or by continuous  slowing-down by means of control valves.

Operating position is vertical or inclined by 60° from vertical line, on demand also horizontally.


Basic Information

For drive of the pump EP there is used three-phase induction motor with squirrel-cage rotor. Stator winding of small motor is made for all ordinary three-phase voltages from 220 to 575 V at basic frequency 50 event. 60 Hz. EP device DC current is not produced.


Small motor winding is in the class of temperature resistance F. Protection IP 54, cooling IC 410. 

EP devices are produced in four basic type sizes:


EP 20/50     -
EP 50/50     EP 50/100
EP 125/60    EP 125/160
EP 150/60    EP 150/160


Operation conditions:

EP devices can be operated up to 2000 m above sea level.


N-23 Norml with range of outer temperatures -20 až +40 °C
T-23 Tropical with range of outer temperatures -25 až +45 °C
F-23 Cold with range of outer temperatures -40 až +40 °C




S1     continuous load
S3 intermittent running with requency of switching up to 2000 cycles per hour at load factor to 100%


Detailed information can be found under the tab Documents for download.

Look at other motors from our production program.

20.11.2017  SPS/IPC/DRIVES 2017
 Dear customer, we invite you to visit us on  Electric Automation - Systems and Components Trade Fair   SPS/IPC/DRIVES 2017 from 28. to 30. November 2017 in Nuremberg.   You will be welcome in our exposition, hall 3, stand 660.  
04.09.2017  IEF Brno 2017
  International Engineering Fair in Brno 9. - 13.10. 2017   We invite you to visit our exhibition at the International Engineering Fair in Brno in the hall Z, stand 131.        We are looking forward to meet you.   I-catalogue of exhibitors and products Map of Exhibition Centre