Electro-Hydraulic Power Unit

Expore the product FeaturesApplicationsSpecificationsAccessories

EHPU-1 Features

With our integrated cooling, power electronics, motor, and pump, the Hydrapulse® EHSU provides the cleanest and most cost effective integration into your chassis, machine, or vehicle platform.

  • Onboard pressure transducers
  • Power dense permanent magnet motor
  • 200vDC to 800vDC
  • HVIL connection
  • Integrated cooling (no external cooling required)
  • CAN / J1939 Communications
  • Onboard diagnostics
  • Power-on-demand / energy savings
  • Complete temperature monitoring
  • Rugged die-cast aluminum housing
  • EV/HEV/Hybrid Steering Circuit
  • EV/HEV/Hybrid Steering with external cooling
  • Steer-by-wire or E-Steer system
  • Open or Closed Center Circuit
  • EHSU-2 Port Locations

EHPU-1 Applications

The Frame Size 1 Electro-Hydraulic Power unit is optimized for alternative powered vehicles in the medium-duty vehicle weight categories between 10,000 lb. (4,500 kg) and 26,000 lb. (12,000 kg) needing hydraulic steering power levels up to 3 kW.

  • Bus/Transit
  • Mining vehicles
  • BEV/FCEV/Hybrid Vehicles
  • Bucket / Work / Vocation / Utility Trucks
  • Delivery / Last Mile Trucks
  • Box / Refer / Regional haulers
  • Airport Ground Support Equipment (GSE)
  • Port / Terminal Trucks / AGV
  • Purpose Built Platforms
  • Off-highway vehicles

EHPU-1 Specifications

Built from the ground up for the rugged on- and off-highway markets, The F1 Series steering unit meets the following specifications:

Rated current – 7 amps
IP Rating IP67
Max Speed 4,000 rpm
Weight 14.2kg (31.4lbs.)
Rated Voltage 200Vdc to 800Vdc
Rated Power 2.5 kW (3.3hp)
Operating Temp. -40°C to 85°C
Storage Temp. -40°C to 125°C

  • High Voltage Cables
  • Reservoir Kits
  • Connector Kits
  • Contacts
  • Low Voltage Connector Kits

EHPU-1 Accessories

We offer a complete assortment of accessories to ensure you have everything you need for your electro-hydraulic system. If you have any questions or do not see what you need, be sure to give our team a call.

High Voltage Power Cable
Low Voltage Connector Kit
Mounting Bracket(s)
Reservoir Kits (Only Available for EHSU, with Integrated pump)
Wireless / Wired Controllers
I/O Modules
Fittings / Hose Kits
Lifting Brackets
Cooler Packages
Connector kits

Order Code

EHPU – 1 – 056 – 350 – U – SAE – XXX
EHPU – 1 – 056 – 650 – U – SAE – XXX

How To Order

Environmental Protection


  • SAE J1455-4.1.3 Temperature Cycle
  • SAE J1455-4.1.3 Thermal Shock
  • SAE J1455-4.1.3 Thermal Stress
  • SAE J1455-4.2 Humidity

Mechanical Vibration

  • SAE J1455-4.10 Swept Sine Vibration
  • SAE J1455-4.10.4 Random Vibration
  • SAE J1455-4.11 Mechanical Shock
  • SAE J1455-4.11 Operational Shock / Harness Shock
  • SAE J1455-4.12 Combined Environmental
  • ISO 16750 Vibration


  • SAE J1455-4.13 Heavy-Duty Truck Electrical Environment


  • 61000-6-4 Radiated Emissions
  • IEC 61000-6-2 Industrial Immunity
  • FCC Part 15B Class A
  • CISPR 25
  • ISO 11452-2 RI
  • ISO 11452-4 BCI
  • ISO 10605 ESD
  • ISO 7637-2 3rd Edition transients (on 12vdc)


Click Link Below to Download CAD Models and Drawings