Linear actuators play a vital role in countless industrial and automation applications, converting rotational motion into precise linear movement. From manufacturing equipment and medical devices to agricultural machinery and specialist automation systems, selecting the right actuator can have a significant impact on performance, reliability and efficiency.
At CRD Devices, we regularly help engineers, designers and procurement teams identify the most suitable solution for their application. Here are five of the most common questions we receive about linear actuators and the answers that can help guide your decision-making process.
1. What Size Linear Actuator Do I Need?
This is by far the most common question we receive.
The correct actuator size depends on several factors, including the load being moved, the required stroke length, operating speed, duty cycle and environmental conditions. An actuator that is too small may struggle to perform reliably, while an oversized unit can add unnecessary cost and complexity.
Understanding the application’s exact requirements allows engineers to select a solution that delivers optimal performance and longevity.
2. How Much Force Can a Linear Actuator Generate?
Linear actuators are available in a wide range of force capacities, from lightweight positioning applications through to heavy-duty industrial operations.
The force required depends on factors such as load weight, friction, mounting position and movement direction. In many applications, safety factors should also be considered to ensure reliable long-term performance.
Careful calculation during the specification stage helps avoid premature wear and ensures the actuator can operate efficiently under expected working conditions.
3. What Is Stroke Length and Why Is It Important?
Stroke length refers to the distance the actuator rod travels between its fully retracted and fully extended positions.
Selecting the correct stroke length is essential to ensure the actuator provides the required range of movement without compromising performance or installation space.
Many applications require custom stroke lengths, particularly where space constraints or specialised machinery designs are involved. Working with an experienced supplier can help ensure the actuator is correctly specified from the outset.
4. Can Linear Actuators Be Used in Harsh Environments?
Yes. Many modern linear actuators are specifically designed to operate in demanding environments.
Depending on the application, actuators can be selected with appropriate sealing, corrosion-resistant materials and protection ratings to withstand dust, moisture, temperature extremes and other challenging conditions.
Whether the application involves food production, outdoor equipment, manufacturing facilities or specialist machinery, choosing the correct actuator specification is critical for reliable operation.
5. Should I Choose an Off-the-Shelf or Custom Linear Actuator?
While standard actuators are suitable for many applications, some projects require a bespoke solution.
Customisation may involve specific stroke lengths, mounting arrangements, feedback systems, motor options or environmental protection requirements. A tailored solution can often improve efficiency, simplify installation and enhance overall system performance.
Partnering with a specialist manufacturer allows customers to benefit from both standard products and application-specific engineering expertise.
Need Advice on Linear Actuators?
Selecting the right linear actuator can be a complex process, particularly for demanding industrial applications. At CRD Devices, our experienced team works closely with customers to identify reliable, high-performance solutions that meet exact operational requirements.
To discuss your application or request technical guidance, contact our team today at sales@crd-devices.co.uk or call +44 (0)1388 778400.