Linear Actuators: Common Questions Answered
Linear actuators are becoming increasingly popular with more and more people using them for a variety of applications in both home and industrial automation. However, many people still have questions about what linear actuators are, how they work, and how to choose the right one for their specific application. In this article, we will answer some of the most common questions people have about linear actuators.

- What is a linear actuator and how does it work?
A linear actuator is a mechanical device that converts rotational motion into linear motion. This conversion is achieved by the use of a lead screw, a nut, and a motor. The motor rotates the lead screw, which moves the nut along the screw, thereby providing linear motion.
- What are the different types of linear actuators available and which one should I choose for my application?
There are several types of linear actuators available, including electric, hydraulic, and pneumatic actuators. Electric linear actuators are the most commonly used type because they are easy to install and maintain, and they can be controlled with precision. When choosing a linear actuator, consider factors such as load capacity, stroke length, speed, and accuracy requirements for your specific application. AT DNH we supply linear, chain and rack actuators. To read more about the differences click here
- What is the load capacity of a linear actuator and how do I determine the right one for my application?
The load capacity of a linear actuator refers to the maximum weight it can handle. To determine the right one for your application, you should calculate the maximum weight or force that your actuator will need to move and choose a linear actuator with a load capacity that exceeds that amount.
- What is the stroke length of a linear actuator and how do I determine the right one for my application?
The stroke length of a linear actuator is the distance that the actuator rod can travel. To determine the right stroke length for your application, you should measure the distance that your actuator will need to move and choose a linear actuator with a stroke length that exceeds that amount. At DNH, we supply linear actuators with a stroke length of 25mm to 1000mm.
- What is the speed of a linear actuator and how do I determine the right one for my application?
The speed of a linear actuator refers to how quickly it can move. To determine the right speed for your application, you should consider factors such as the required cycle time, the weight of the load being moved, and any accuracy requirements. Contact our team at DNH to help you find the right linear actuator for you.
- How do I control a linear actuator and integrate it with my automation system?
Linear actuators can be controlled using a variety of methods, including switches, buttons, or programmable logic controllers (PLCs). To integrate a linear actuator with your automation system, you should ensure that the actuator is compatible with the control system being used and follow the manufacturer’s instructions.
- What are some common applications of linear actuators in South Africa?
Linear actuators are commonly used in a variety of applications in South Africa, including opening and closing windows, adjusting the angle of window blinds, controlling conveyor belts, lifting and moving heavy objects, and controlling the movement of robotic arms.
- How do I install a linear actuator and what are some important safety considerations?
Linear actuators are generally easy to install and come with detailed instructions from the manufacturer. When installing a linear actuator, it is important to follow the manufacturer’s instructions carefully and to observe all safety precautions, including ensuring that the power is turned off before installation and using appropriate protective equipment.
- What are the maintenance requirements for linear actuators and how do I keep them running smoothly?
Linear actuators generally require minimal maintenance, but it is important to follow the manufacturer’s instructions for maintenance and cleaning to ensure that they continue to function properly.
For more information about linear actuators follow the link to our website.