Learn how gears relate to the performance of electric actuators, and how they ensure an optimal actuator efficiency. Find out more about the durability and functionality of plastic and steel gears for industrial actuators.
There are many types of gears in electric linear actuators, but the two gear types, plastic and steel gears, are commonly used for industrial actuators. Both types of gears come in different forms:
There are pros and cons with any type of gear for actuators.
When comparing plastic gears to steel gears, plastic gears generally have lower efficiency and are more sensitive to high temperatures. However, if an actuator is used within its specifications, for instance, by running the actuator to its end stop each time or by avoiding mechanical blocking, the gear material will not be affected and will not influence the actuator’s overall performance or service life negatively.
Plastic gears are low-noise, which make them suitable for environments and applications where a low noise level is important.
Did you know?
Typically, linear actuators are designed with one gear connected to the motor and spindle. In this way load and speed can be adjusted by changing the spindle pitch. By using a second gear step between the spindle and the motor, even more performance variations are possible using the same actuator type.
A good rule of thumb when choosing an actuator is to multiply the load and speed required to get the efficiency. This will get you a good indication of the type of actuator you need.