How to Troubleshoot Common Linear Actuator Problems
Publish Date: 26 Sep 2025
Introduction
Linear actuators are useful devices, but sometimes they can stop working properly. Here’s how to quickly find the problem and fix it:
1. Actuator Won’t Move
- Troubleshooting: Check if the actuator is getting power. Use a multimeter to measure voltage at the actuator’s wires.
- Fix: If no power, check battery or power supply and wiring for loose connections or damage. Replace or fix broken wires.
2. Actuator Moves Slowly or Weakly
- Troubleshooting: Overloading or low voltage can cause slow movement.
- Fix: Reduce the load to within actuator limits and ensure the power supply provides correct voltage and current. Recharge or replace batteries if needed.
3. Jerky or Noisy Movement
- Troubleshooting: Lack of lubrication or mechanical dirt can cause rough motion.
- Fix: Clean the actuator’s moving parts gently and apply proper lubricant like lithium grease. Tighten any loose screws or bolts.
4. Actuator Stops Moving Midway
- Troubleshooting: Mechanical blockage or internal limit switch might be triggered.
- Fix: Remove any physical obstructions. Reset or replace limit switches if faulty.
5. Overheating Actuator
- Troubleshooting: Continuous use under heavy load or electrical issues can cause overheating.
- Fix: Allow actuator to cool before use. Avoid overloading and check electrical connections for faults.
6. Actuator Moves in Wrong Direction
- Troubleshooting: Wiring polarity might be reversed or control signals are incorrect.
- Fix: Reverse wiring as per the actuator’s manual or check control wiring and relays.
7. Motor Buzzes but Actuator Doesn’t Move
- Troubleshooting: Motor may be stuck or damaged.
- Fix: Inspect the motor and gears for damage. If necessary, repair or replace the motor assembly.
Tips for Smooth Operation and Longer Life
- Keep the actuator clean and free from dust and moisture.
- Lubricate moving parts regularly as per the manufacturer’s instructions.
- Avoid overloading by following specified weight limits.
- Inspect wiring and connections periodically.
- Use the right power supply voltage and avoid sudden power loss.
- Store actuators properly when not in use.
This guide helps quickly diagnose and fix common linear actuator problems, improving performance and extending device life. Follow these simple steps to keep actuators running smoothly.
