How to make a linear actuator faster?

Improving the speed of a linear actuator can significantly enhance the efficiency and responsiveness of various systems and machines that rely on linear motion. Linear actuators are widely used in industries such as manufacturing, robotics, and automation, where quick and precise movement is crucial. If you’re looking to increase the speed of a linear actuator, several approaches can be taken, ranging from hardware modifications to control system adjustments. In this detailed guide, we’ll explore methods to make a linear actuator faster, considering factors like motor specifications, gear ratios, and control systems.

1. Upgrade the Motor

The motor is the heart of any linear actuator, and its capabilities directly affect the actuator’s performance. To increase speed, upgrading to a more powerful motor is often the most effective solution.

Higher RPM Motors: Opt for a motor with a higher revolutions per minute (RPM) rating. A motor with a higher RPM can potentially drive the actuator faster.

Increased Torque: Ensure the new motor has enough torque to overcome the load being moved. Higher torque allows for faster acceleration and movement under load.

Electric vs. Hydraulic: Electric actuators can be faster than hydraulic ones due to the inherent speed limitations of hydraulics. Consider switching if your application allows it.

2. Adjust Gear Ratios

Gear ratios determine how much mechanical advantage is applied to the output. Lower gear ratios (closer to 1:1) can result in faster speeds but less force, whereas higher gear ratios increase force at the cost of speed.

Lower Gear Ratio: Reducing the gear ratio will decrease the torque but increase the speed of the actuator. This is suitable for applications where speed is more important than force.

Custom Gearboxes: Sometimes, off-the-shelf gear ratios may not meet your exact requirements. Customizing a gearbox can provide the precise balance of speed and force needed for your application.

3. Optimize Mechanical Components

Mechanical components play a crucial role in the overall performance of a linear actuator. Optimizing these can lead to improved speed.

Reduced Friction: Use high-quality bearings and lubricants to minimize friction in the actuator’s moving parts. Reduced friction means less energy is wasted, allowing for faster movement.

Lightweight Materials: Lighter components can be accelerated more quickly. Replacing heavier components with lighter alternatives can contribute to increased speed.

Balanced Design: Ensure the design of the actuator is balanced and optimized for speed. Unnecessary weight or poorly designed components can slow down the actuator.

4. Enhance the Control System

The control system governs how the actuator is powered and operated. Upgrades to the control system can significantly boost speed.

Advanced Controllers: Modern controllers can manage motor speed more precisely, allowing for faster acceleration and deceleration. Look for controllers with high-speed processing capabilities.

PID Tuning: Proportional-integral-derivative (PID) controllers can be tuned to improve the speed response of the actuator. Proper tuning ensures the actuator reaches its desired speed quickly and accurately.

Feedback Systems: Incorporating feedback systems like encoders can provide real-time information about the actuator’s position and speed, allowing the control system to adjust more accurately and rapidly.

5. Power Supply Enhancements

The power supply affects the performance of the actuator. Ensuring a stable and robust power supply is crucial for achieving faster speeds.

High-Quality Power Supply: Use a reliable and stable power supply that can deliver the required voltage and current consistently. Fluctuations in power can negatively impact the actuator’s speed and performance.

Voltage Adjustment: Increasing the voltage supplied to the motor can increase speed, but this should be done carefully to avoid damaging the motor or exceeding its operational limits.

6. Regular Maintenance

Regular maintenance ensures that all components are functioning optimally. Over time, wear and tear can affect the actuator’s performance, including speed.

Routine Inspections: Regularly inspect the actuator for signs of wear or damage. Addressing issues promptly can prevent performance degradation.

Cleaning and Lubrication: Keep the actuator clean and well-lubricated. Dirt and debris can increase friction and slow down the actuator.


Increasing the speed of a linear actuator involves a combination of hardware upgrades, mechanical optimizations, and control system enhancements. Each application has unique requirements, so it’s essential to assess the specific needs of your system when deciding which methods to implement. By carefully considering motor upgrades, gear ratios, mechanical components, control systems, and power supply, you can significantly improve the speed of your linear actuator, leading to enhanced efficiency and productivity in your operations.

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