About Our BDC Motors

Subsea Batteries

Subsea Batteries

POWER UNDER PRESSURE Pressure Tolerant Li-Po Batteries for underwater vehicles

Complete In-house Design and Fabrication

Motion Control means machine performance. HYDROSPACE specializes in subsea servo drive systems and offers world-class end-to-end design, manufacture and test solutions. From custom Brushless DC servo motors to electronic controllers, network communication and control software, we offer full system design flexibility for 1-100HP motors from 24 to 800VDC. 

HYDROSPACE brings 25 years of experience in custom servo drive systems for deep ocean and space applications. This includes battery power banks, power management, to DC motor design, control electronics and control software to operate a wide range of high reliability applications for propulsion systems, rotary and linear actuators, hydraulic power Units (HPU), winch drive, track drive systems and more. These are adapted for use on any type of vehicle, manned or unmanned (ROVs, AUVs and Manned Submersibles) as well as custom research equipment and deep ocean resident systems. 

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Custom Motor Design and Controls

The ability to customize the motor to the specific load allows the motor to operate at the power level of the vehicle, without the need for any voltage adjustments to accommodate the motors. Hydrospace offers custom, semi-custom and standard designs for voltages ranging from 24-800VDC. All motors are three phase, permanent magnet DC motors and designed to be operated in ambient water environment. Drive controls include from simple analog linear control to RS-485, CAN Bus or Ethernet communication. Custom system control software for single or multi axis is adapted to the application in support of client specifications or as a stand-alone package. 


  • Standard and Custom Voltage Designs 
  • High Reliability, Brushless Design  
  • Aluminum, Stainless Steel or Titanium 
  • Pressure Balanced Oil-Filled Housing 
  • Hi-Dielectric Technology Winding Protection 
  • Remote or Integrated Electronics 
  • Propulsion Drive Systems 
  • Rotary Gear drive Systems 
  • Hydraulic Pump Drives 
  • Winch System Drives 
  • Precision Deployment Systems 
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BDC Motors Hydrospace
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