The low noise generation withhighest power and less weight
eServoPOWER STEERING PUMP & ELECTROHYDRAULICS
Truck superstructures and the maneuvering of trucks and buses require very high pressures, for example within the power steering system, in order to provide the driver with sufficient support.
This requires a motor with a high torque output, resulting in mostly big and heavy electric motors being used for existing electric solutions.


Maximum pressureup to 250 bar
This does not have to be the case, however, if you decide to choose one of our eServo application optimized power steering pumps instead.
Our optimized power steering pumps are unparalleled in terms of compactness, weight, noise and energy efficiency. Our highly integrated electric motor offers the best solution in combination with hydraulic pumps especially selected for electric utility vehicles.
Our electric power steering units supply a maximum pressure of up to 250 bar for parking and a nominal flow rate of 18 to 36 liters per minute. This means that our units meet the requirements for a wide range of applications, regardless of the environmental temperatures.
The all-in-one systemwith integrated inverter
The new plug-and-play version of the eServo electrohydraulic system with integrated MOTEG HV inverter has been specially developed for use in mobile applications.
It is ideal for electrohydraulic auxiliary drives – for example, for operating power steering in commercial vehicles. Additional components such as DC/DC converters or AC motor cables are not required.
- Integrated MOTEG HV inverter
- No AC motor cables or DC/DC converters required
- Completely ready-to-connect plug & play solution
- Full CAN communication & functional safety
- Sensorless ON-Demand Control Software (optional)
- High Voltage Interlock (HVIL) for safe operation


Our Steering Pump & electrohydraulicsat a glance
- Positioning as required
- Controlled by an HV inverter, eliminates need for a large DC/DC converter
- Compact design and low weight
- Energy-efficient, variable-speed PM synchronous motor
- No maintenance work and cost
- High life expectancy
- Minimum possible energy consumption
- Low noise generation
- Connection to the CAN bus (optional)
- On-demand control (optional)
eServoSteering Pump Series & Electrohydraulics
Technical Specifications
| Product name | Displacement [ccm] | Motor Power (kW) | Motor Voltage [VAC] | Rated Speed [min⁻¹] | Flow-Rate** [l/min] | Pressure Rated/Max [bar] | Noise @150 bar [dB(A)] | Dimensions (LxBxH) [mm] | Weight [kg] | Datasheet [230 V] | Datasheet [400 V] |
|---|---|---|---|---|---|---|---|---|---|---|---|
| eServo CX*-80-60 | 7 8 10 | 5,2 | 230/400 | 3000 | 18,5 22,8 28,8 | 138/180 112/146 89/116 | 58 | 247 x 157 x 226 250 x 157 x 226 254 x 157 x 226 | 14 14 14 | ||
| eServo CX-80-90 | 7 8 10
11
13
15 | 7,9 | 230/400 | 3000 | 18,5 22,8 28,8
31,6
35,9
43,3 | 209/250*** 170/250*** 135/224
123/204
108/180 90/149 | 58 | 277 x 157 x 226
280 x 157 x 226
284 x 157 X 226
286 x 157 x 226 289 x 157 x 226
294 x 157 x 226 | 16 16 16 16 16 16 | ||
| eServo CX-80-120 | 10 11 13 15 | 10 | 230/400 | 3000 | 28,8 31,6 35,9 43,3 | 173/240***
157/240*** 138/215 115/180 | 58 | 324 x 157 x 226
326 x 157 x 226
329 x 157 X 226
334 x 157 x 226 | 21,5 21,5 21,5 21,5 | ||
| eServo CX-100-100 | 15 16 18 20
22
25 | 18,8 | 400 | 3000 | 43,3 45,3 51 57 63 71,8 | 217/220*** 207/250*** 184/240*** 165/230*** 149/230*** 131/220*** | 58 | 378 x 265 x 291 372 x 265 x 291 375 x 265 x 291 378 x 265 x 291 381 x 265 x 291 385 x 265 x 291 | 31 32 32 32
32
32 | / | on request |
| eServo CX-100-150 | 16 18 20
22
25 | 28,5 | 400 | 3000 | 45,3 51 57 63 71,8 | 250/250*** 240/240*** 230/230*** 224/230*** 196/220*** | 58 | 422 x 265 x 291 425 x 265 x 291 428 x 265 x 291 431 x 265 x 291 435 x 265 x 291 | 39 39 39
39
39 | / | on request |
* X = Displacement
** @ rated speed @ rated pressure
*** = limit pump
| Product name | Displacement [ccm] | Motor Power [kW] | Inverter Voltage [VDC] | Rated-/Max. Speed [min-1] | Flow Rate** [l/min] | Pressure Rated/Max. [bar] | Noise Level @150 bar [dB(A)] | Dimensions (l x w x h) [mm] | Weight [kg] |
|---|---|---|---|---|---|---|---|---|---|
| eServo CX*-80-60-U | 7 8 10 | 5,2 | 325-400 560-800 | 3000 | 18,5 22,8 28,8 | 138/180 112/146 89/116 | 58 | 277 x 204 x 288 281 x 204 x 288 285 x 204 x 288 | 16 16 16 |
| eServo CX-80-90-U | 7 8 10
11
13
15 | 7,9 | 325-400 560-800 | 3000 | 18,5 22,8 28,8
31,6
35,9
43,3 | 209/250 170/250 135/224
123/204
108/180 90/149 | 58 | 277 x 204 x 288
281 x 204 x 288
285 x 204 x 288
287 x 204 x 288
290 x 204 x 288
294 x 204 x 288 | 18 19 19 19 19 19 |
| eServo CX-80-120-U | 10 11 13 15 | 10 | 325-400 | 3000 | 28,8 31,6 35,9 43,3 | 173/240
157/240 138/215 115/180 | 58 | 325 x 204 x 288
325 x 204 x 288
330 x 204 x 288
335 x 204 x 288 | 24 24 24 24 |
| eServo CX-80-120-U | 10 11 13 15 | 10 | 560-800 | 3000 | 28,8 31,6 35,9 43,3 | 173/240
157/240 138/215 115/180 | 58 | 325 x 204 x 288
325 x 204 x 288
330 x 204 x 288
335 x 204 x 288 | 24 24 24 24 |
* X = Displacement
** @ rated speed @ rated pressure
GET IN TOUCH WITH US
In any case of questions or if you want a no-obligation consultation, don’t hesitate to contact us! We are looking forward to your call or e-mail.




