AM Ruggedized Servo
Cylinder
AU Subsea Servo
Cylinder
L2M Linear Servo
Actuator
L2D Redundant Linear
Servo Actuator
T3M Rotary Servo
Actuator
T3U Subsea Rotary
Servo Actuator
A2 Industrial Servo
Cylinder
U-Series Underwater Linear
Actuator
A1 Standard Servo
Cylinder
R-Series Power-Dense
Performance Actuator
Legacy Original Actuator
Lines
Custom Engineered to
Spec
Ruggedized Servo Cylinder
AM
The AM Series Servo Cylinder combines high-speed servo control with ruggedized construction for demanding environments.
  • Integrated Servo Electronics: BLDC control electronics with contactless absolute position feedback built in
  • Heavy-Duty Ruggedization: Ideal for harsh shock and vibration environments in the aerospace and defense industries
  • MIL-SPEC Connectors: includes D38999 connectors for robust field service.
  • Onboard Health Monitoring: integrated sensors (temp, current, voltage, humidity) for system status awareness
  • EMI/EMC Shielded Enclosure: 100% electrically conductive hardcoat anodized aluminum enclosure for electromagnetic interference and compatibility protection
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Subsea Servo Cylinder
AU
Designed for underwater robotic systems and marine automation platforms.
  • Deep-Subsea Rated: pressure-balanced, oil-filled design for operation beyond 6000 meters (10,000 PSI)
  • Integrated Servo Electronics: BLDC control electronics with contactless absolute position feedback built in
  • Flexible Control Interfaces: supports CAN, RS-422 serial, digital signals, and additional command options
  • Maritime Application Ready: ideal for harsh above- and below-waterline use including hydrofoils, ROV control surfaces, subsea valves, release mechanisms, and USVs
  • Shallow-Water Options: low-cost subsea variants available for hydrofoils, littoral environments, and USV control
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Linear Servo Actuator
L2M
Precision Performance. Integrated Control.
  • Integrated Electronics: Built-in BLDC control for CAN 2.0B and RS-485 serial communication.
  • Zero-Backlash: Preloaded axial load path for maximum stiffness and control authority.
  • No Homing Required: Patented Phase Index® absolute feedback provides high-resolution position data instantly.
  • Ruggedized Design: IP67-sealed with D38999 connectors for operation in extreme environments.
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Redundant Linear Servo Actuator
L2D
Mission-Critical Safety. Fully Redundant.
  • Dual Isolation: Two independent channels eliminate single points of electrical failure.
  • Flight-Critical Design: Redundant motors and electronics for safety-sensitive aerospace applications.
  • Host-Side Voting: Triplicated absolute position sensors allow for robust, reliable system arbitration.
  • Flexible Redundancy: Supports user-defined cold-standby or active load-sharing configurations.
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Rotary Servo Actuator
T3M
High-torque, precision rotary motion control.
  • Integrated Controls: Brushless DC control electronics with contactless absolute position feedback for accurate positioning
  • High Power Density: High torque in a compact, rugged package
  • Dynamic Performance: Designed to handle high transient loads and demanding motion profiles
  • Flexible Interfaces: Supports CAN, RS-485 serial, and PWM control options
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Subsea Rotary Servo Actuator
T3U
Pressure-compensated rotary actuation for deep-sea environments.
  • Subsea Optimized: Oil-filled, pressure-balanced housing based on the proven T3 platform
  • Subsea Capability: Reliable operation at depths of 6000+ meters
  • Integrated Controls: Brushless DC electronics with contactless absolute position feedback
  • Underwater Applications: Ideal for control surfaces, rudder actuation, and subsea valve systems
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Industrial Servo Cylinder
A2
A2 Series actuators deliver excellent reliability and precision for industrial and automation applications.
  • IP65 Sealing: wet and dusty environments
  • Advanced Control: integrated BLDC controller and Phase Index® feedback
  • Simple Integration: easy configuration and deployment for industrial automation tasks
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Underwater Linear Actuator
U-SERIES
The U Series is built specifically for full-time subsea operation with long-term reliability.
  • Pressure compensated oil-filled assembly enables reliable linear motion in full-ocean-depth environments
  • Versatile configurations (stepper vs. BLDC, ballscrew/acme leadscrew, 1" to 16" stroke length) allows tailoring to system needs (sensor deployment, USV/UUV control surface, valve control, etc.)
  • Internal linear potentiometer for absolute position feedback
  • External motor control electronics required
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Standard Servo Cylinder
A1
The A1 Series is designed for applications requiring compact size and strong performance.
  • Cost-Effective Standard: Suitable for benchtop applications, laboratory experiments, clean environments
  • Integrated Control: built-in BLDC electronics with contactless Phase Index® absolute position feedback and multiple control interfaces (CAN, RS-422, RC PWM, etc.)
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Power-Dense Performance Actuator
R-Series
Power-dense electromechanical linear actuator for aerospace applications with proven in-space heritage
  • High force density: Up to 1,200 lbf peak output in a compact ~3 lbm actuator
  • Integrated absolute feedback: Phase Index® position sensing provides high-resolution, lossless position awareness
  • Dynamic performance: Linear speeds exceeding 3.0 in/s with stroke lengths up to 3.5 in
  • Mission-ready: Engineered for high shock, vibration, vacuum operation, and mission-critical reliability
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Original Actuator Lines
Legacy Actuator
Established Actuator Platforms with Decades of Field-Proven Success.
  • Foundational Designs: Includes our B-Series parallel, D-Series in-line, and I-Series integrated actuator platforms.
  • Program Stability: Versatile mechanical configurations for long-term project support and specialized replacement needs.
  • Operational Heritage: A thirty-year record of reliable service in rigorous aerospace and industrial environments.
  • Continued Support: Maintained for existing systems requiring verified, field-tested performance over time.
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Engineered to Spec
Custom Engineered Solutions
Proven Platforms Engineered for Your Mission-Specific Requirements.
  • Cross-Platform Adaptation: Modification of U, L, T, R, and A series for unique performance requirements and space envelopes.
  • Mechanical Flexibility: Application-Specific stroke lengths, custom mounting geometry, and specialized connector interfaces.
  • Extreme Environment Optimization: Purpose-built solutions for high-vacuum, radiation-hardened, or ultra-deep-sea applications.
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Aerospace Linear Actuators
Aerospace
Underwater Linear Actuators
Underwater & Marine
Uncrewed Vehicles
Uncrewed Vehicles
Defense Linear Actuators icon
Defense
Industrial Linear Actuators
Industrial
Medical Linear Actuators
Medical
Science & Research Linear Actuators
Science & Research
ultra motion other industries icon
Other Industries

U SeriesUnderwater

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.

L SeriesLinear Servo

The L-Series Linear Servo Actuators are advanced electromechanical actuators equipped with integrated brushless DC control electronics, CAN 2.0B and RS-485 serial communication protocols, and our Phase Index® contactless absolute position feedback. Their design focuses on dynamic operation in the most demanding environments, utilizing durable mechanical elements, top-tier materials, and best-in-class components.

T SeriesRotary Servo

The T3 Series Rotary Servo Actuator is an advanced electromechanical actuator equipped with integrated brushless DC control electronics and contactless absolute position feedback. Its design focuses on dynamic operation in the most demanding environments, utilizing durable mechanical elements, top-tier materials, and best-in-class components.

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Ultra Motion's Servo Cylinder, L-Series, and T-Series actuators are engineered for environments where durability, precision, and real-time feedback cannot be compromised. When integrated with Embention’s…

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Proven Reliability for Every Mission: Ultra Motion's Space-Ready Actuators

Ultra Motion actuators have a long-standing history in critical space missions, including: Serving as a flight-critical component in the launch escape system of a crewed spacecraft. Providing…
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Capabilities

  • Brushless DC, stepper motor, and brushed DC actuators
  • Integrated control electronics and absolute position feedback
  • Communication protocols include CAN 2.0B, RS-422 serial, RC PWM, 4-20 mA, and more
  • 0.1″ to 16″ strokes
  • Force to 1,200 lbf
  • Speeds to 14 in/s
  • Submicron resolution
  • Preloaded assemblies
  • Specialty Actuators:
    • Subsea actuator for operation in depths of 22,000 feet below water (10,000 psi)
    • IP67 environmental protection
    • Shock and vibration hardened assemblies
    • Vacuum compatible and low outgassing actuators to 1×10^-6 Torr
    • Radiation hardened actuators exposed to 20 MRad/year
  • Custom Actuators:
    • Develop custom tailored solutions to meet performance specifications that exceed the capability of standard actuators.