Electric linear actuators – find manufacturers and suppliers

Electric linear actuators, also known as electric linear cylinders or electric cylinders, are mechanical devices that convert electrical energy into linear motion.

These drives are popular in many applications as they can be precisely controlled and offer high efficiency.

Below you will find the structure and function of electric linear actuators, their areas of application and their advantages:

Structure and function of electric linear actuators:

A typical electric linear actuator usually consists of the following main components:

1. Electric motor:
   The motor drives the movement.
   It can be a direct current (DC) or alternating current (AC) motor.
2. Gearbox:
   The gearbox reduces the speed of the motor and increases the torque, which is necessary to move the load.
3. Spindle or threaded rod:
   This component converts the rotational motion of the motor into linear motion.
   There are different types of spindles, such as ball or trapezoidal threaded spindles.
4. Push rod:
   The push rod is connected to the screw and moves linearly when the screw rotates.
5. Housing:
   The housing protects the internal components and provides a mounting structure.
6. Limit switches and sensors:
   These are used to monitor the position and movement of the actuator and ensure that it is not operated beyond its physical limits.

Applications of electric linear actuators:

Electric linear actuators find application in a variety of industries, including:

1. Automation technology:
For precise motion control in manufacturing equipment.

2. Medical technology:
In hospital beds, wheelchairs and other medical devices.

3. Aerospace:
For controlling aircraft flaps and other moving components.

4. Automotive industry:
For applications such as seat adjusters and tailgates.

5. Agriculture:
In machinery for seed distribution, harvesting and other agricultural processes.

6. Manufacturing and mechanical engineering:
Automated handling and positioning of components.

Advantages of electric linear actuators:

• They allow precise control of position and speed.
• Compared to hydraulic or pneumatic systems, they require less maintenance.
• They only consume energy when they are in motion.
• There is no risk of fluid leaks, as is the case with hydraulic systems
• They can be easily integrated into existing control systems, especially systems that already work with electrical signals.

Here are the most important aspects to look out for when purchasing electric linear actuators:

There are several important aspects to consider when purchasing electric linear actuators professionally.

• The electric linear actuators must have sufficient force to lift or move the required load. Pay attention to the rated force (in newtons or kilonewtons) that the device can move.
• For applications that require continuous or frequent use, the actuator should be designed for continuous loads.
• Pay attention to the maximum speed at which the actuator can move a load. This is particularly important in applications where time is of the essence. Note that speed is often related to load capacity: with heavier loads, the speed may decrease.
• In some cases, it may be useful to be able to adjust the speed of the actuator to the application.
• The stroke length indicates how far the cylinder can extend. Select a length that is sufficient for the desired application.
• Some models allow flexible adjustment of the stroke length.
• Pay attention to the precision of the movement. For applications that require high precision, choose electric lifting actuators that allow fine and exact positioning.
• Modern lifting actuators offer various control options such as integrated limit switches, positioning sensors or connection to control systems (e.g. PLC).
• The motor should provide enough power to move the load with the desired speed and force. Pay attention to the voltage (e.g. 24V, 48V, 230V) and the power consumption of the motor.
• Depending on the application, choose between a direct current (DC) motor, an alternating current (AC) motor or a stepper motor for precise movements.
• Make sure that the lifting actuator is easy to install and fits the existing mounting points. Standardized mounting brackets or holes make installation easier.
• The physical size of the actuator must fit into the available installation space. Take into account both the retracted and extended state.
• Pay attention to the protection class of the actuator (e.g. IP65 for dust and splash water protection), especially if the actuator is used in harsh or damp environments.
• The lifting actuator should be designed for the operating temperatures, whether in cold or hot environments.
• Find out about the service life of the actuator, usually specified in the number of cycles. 
• A high-quality lifting actuator should withstand many operating cycles.
• Choose actuators that are low-maintenance or can be easily serviced. Simple lubrication and replacement of wearing parts should be possible.
• Electric linear actuators should have limit switches to protect the cylinder from overload and mechanical damage.
• Integrated overload protection ensures that the motor is switched off if the load is too high or blocked.
• Ensure a good warranty period and technical support, especially for complex applications.

When purchasing an electric linear actuator, factors such as lifting force, speed, stroke length, precision, protection class and drive are decisive. A suitable model should be adapted to the specific requirements of the application to ensure reliable and long-lasting performance. Manufacturer quality and ease of maintenance also play an important role in the selection process.

Electric linear actuators can be purchased from various suppliers. Comprehensive information about manufacturers and suppliers of Electric linear actuators from all over the world can be found on Exportpages.