HYDRAULIC VS. ELECTRIC ACTUATION SYSTEMS: A COMPREHENSIVE COMPARISON

Actuators play a vital role in machinery by converting energy into motion to perform specific functions. Among the most commonly used types are hydraulic and electric actuators—each with distinct advantages and trade-offs. When selecting an actuation system, machine builders must often choose between these technologies. A clear understanding of their differences is key to selecting the most effective actuation solution for the application at hand. Comparison of Actuation Technologies.

HYDRAULIC ACTUATION SYSTEMS

Hydraulic actuators utilize pressurized fluid to generate linear or rotary motion. They are widely used in heavy-duty applications due to their high-power density, durability, and cost-effectiveness. However, they come with inherent challenges:

Advantages:

• High Power Density: Exceptional force output, making them ideal for demanding applications.
• Robust Performance: Capable of handling extreme conditions and shock loads.
• Cost-Effective for High Force Applications: Often more affordable in heavy-duty settings.

Disadvantages:

• Leakage & Maintenance Issues: Prone to fluid leaks, leading to safety hazards, downtime, and environmental concerns.
• Lower Energy Efficiency: Operates continuously, resulting in energy losses and higher operational costs.
• Complex Infrastructure: Requires pumps, hoses, and reservoirs, increasing system complexity and footprint.
• Limited Precision Control: Difficult to achieve fine-tuned motion.

ELECTRIC ACTUATION SYSTEMS

Electric actuators, or electro-mechanical actuators (EMAs), use electrical energy to operate motors that drive belts, gears, or other means of power transmission. They are preferred for applications requiring precision and efficiency.

THE BEST OF BOTH WORLDS: KYNTRONICS’ HYBRID ACTUATION SOLUTION

Kyntronics’ Hybrid Linear Actuator (SHA) seamlessly integrates the benefits of hydraulic and electric actuation while eliminating their respective drawbacks. They are fully sealed, electrically powered systems that integrate a motor and pump. They operate on a closed circuit with a small volume of fluid that never requires replenishment or replacement, preventing contamination and reducing maintenance. 

Our hybrid actuator provides:

• High Force Capability: Generates up to 150,000 lbs. (667 kN) of force output.
• Precision Control: Ensures highly accurate positioning, speed, and force regulation.
• Superior Energy Efficiency: Power-on-demand design minimizes energy consumption.
• Enhanced Reliability: Resistant to shock loads and side loading with minimal maintenance needs.
• Low Maintenance: No fluid changes or lubrication required.
• Shock Load Tolerance: Enhanced durability.
• Leak-Free Design: Unlike traditional hydraulic actuators.

Common Applications:

FIND THE RIGHT ACTUATION SOLUTION FOR YOUR NEEDS

Selecting the best actuation system depends on your specific application requirements. Contact one of our experts to help you make an informed decision.