What factors affect the durability of electric actuators?

In today’s industry, device reliability plays a key role—any unplanned downtime means loss of time, resources, and money. One of the components that must work precisely and without failure are actuators. In particular, electric actuators have gained popularity due to their versatility, ease of control, and increasing durability. But what exactly determines their lifespan?

Types of actuators

Electric actuators convert electrical energy into mechanical movement—either linear or rotary. They are used in industrial automation, gate systems, robotics, and production lines. They are characterized by high precision, the ability to integrate with control systems, and relatively low maintenance requirements.

Pneumatic actuators, powered by compressed air, are lightweight, fast, and cost-effective in operation. Although they perform well in many industries, their limited force and the need for a constant compressed air supply mean they are not always the ideal choice.

Where high force is needed—e.g., in construction machinery—hydraulic actuators prevail. They operate using compressed fluid and are highly resistant to overload. Their drawbacks include more complex construction and the need for regular maintenance of the hydraulic system.

Electric actuators combine electrical and mechanical technologies. They allow precise control of movement and torque, making them ideal for advanced automation systems such as robots or industrial valves.

What affects the durability of electric actuators?

Extreme temperatures, high humidity, or dust can shorten an actuator’s lifespan. It’s important to consider the device’s ingress protection rating and its resistance to environmental factors—especially for actuators used outdoors.

Improper use of an actuator, such as overloading or irregular maintenance, significantly shortens its durability. It is crucial to follow the manufacturer’s instructions and use the device as intended.

The actuator must be properly matched to the mass of the object it drives. An undersized actuator will operate at the edge of its capabilities, increasing the risk of failure and reducing its lifespan.

Similarly, the torque and required thrust (i.e., acting force) should comply with the actuator’s specifications. Mismatch can lead to excessive wear of the motor and mechanical components.

These are mechanical factors that directly affect the actuator’s performance. A shaft with too small a diameter may deform, and an incorrect number of threads can lead to improper torque transmission.

Overly fast duty cycles can cause the motor to overheat. It’s advisable to select an actuator with sufficient power reserve, especially for applications requiring intense operation over short periods.

How to properly select an electric actuator?

For valve control actuators, power is crucial—both for opening and closing the valve. Underestimating power requirements leads to overload and faster wear.

Actuators for hydraulic valves, ball valves, or dampers should match the working characteristics of the specific valve. Movement, torque, and operating time—all matter.

Installation and maintenance—the foundation of durability

Every installation should follow the manufacturer’s guidelines. Whether it’s a driveway gate or an industrial system—proper installation is essential for failure-free operation.

Regular technical inspections, cleaning of moving parts, and checking electrical connections—these actions significantly extend the actuator’s lifespan. They should be performed regularly, preferably by qualified personnel.

Actuator comparison – what’s worth choosing?

Pneumatic vs. electric

Pneumatic actuators are cheaper and faster but require compressed air. Electric actuators, on the other hand, offer higher precision, quieter operation, and easier control—especially in automated environments.

Hydraulic vs. electric

Hydraulics mean power and durability, but also a higher risk of leaks and complex maintenance. Electric actuators are cleaner, more environmentally friendly, and are increasingly replacing hydraulic solutions in everyday applications.

The durability of an electric actuator depends on many factors—from proper selection and usage to working conditions, maintenance frequency, and the quality of accessories. A well-chosen and properly operated actuator can work reliably for many years, ensuring high efficiency and operational safety.