Underwater & Marine
Linear Actuators
For 30 years Ultra Motion has been a leading supplier of pressure-compensated oil-filled linear actuators for the most critical subsea applications. Our unique design allows for reliable actuation to depths greater than 6,000 meters below sea with self-compensation and an extremely small footprint. We offer the most cost effective PBOF solutions in the industry where power density, size, and reliability are critical.
The AU Servo Cylinder is Ultra Motion’s next-generation submersible actuator that includes built-in BLDC control electronics and contactless absolute position feedback. For applications requiring full ocean depth operation, we have a 6000+ meter version with CAN 2.0B, RS-422 serial, and RC PWM operating modes. We also offer the unmatched marine environment reliability benefits of a pressure-compensated oil-filled actuator at an economical price point with our “shallow” AU, ideal for uncrewed surface vessels, hydrofoils, and shallow operation to 75 meters.
Our submersible products are commonly used to operate hydroplanes on subsea vehicles, deploy instruments/accessories like float releases or sensors, raise masts/antennas on USVs, control hydrofoils or rudders on USVs, actuate subsea valves, and more.
Design and Manufacturing Capabilities include:
- MIL-A-8625 Type III (Hardcoat) anodized aluminum enclosures
- 316L stainless steel hardware and shafts
- Cathodic protection
- Wet-Mate Underwater Connectors (Seacon, SubConn, Teledyne, etc.)
- Pressure compensated oil filled designs
- Stepper and Brushless DC motor options
Performance Specifications including:
- NEMA 17 models (forces up to 100 lbs)
- NEMA 23 models (forces up to 500 lbs)
- Depth ratings up to 20,000 ft
- Temperature ranges from -30°C to 65°C