Linear actuators that provide push / pull forces are commonly referred to as electric actuators. These actuators are telescopic and use push tubes using a guide screw, ball wire, or roller wire. They are equipped with the basic electric motors
For 24VDC or 12VDC, but AC versions are also available) and gears to provide a fixed speed and force selection. They usually travel within 50mm 700mm, with forces ranging from 50N to 500 kN (from the high-performance version). Electric actuators are used where duty cycles are typically in the 10-25% range.
High-performance linear actuators are also based on telescopic push / pull capabilities. However, they usually do not carry motors, thus can choose the motor most suitable for a specific application. Servo motors are also common (servo linear actuator), which provides external control of the motion profile, speed, torque, and etc. High performance linear actuators can be used with motors providing force up to 500 kN. Due to the control and environmental advantages provided by such actuators, there is increasing attention to such actuators to replace hydraulic actuators.
Positioning linear actuators are used to provide a linear positioning of the load, usually with a large load. Many different versions are available, providing different performance characteristics. These actuators typically provide repeated positioning ranging from a few microto 100 microns, with loads ranging from a few grams to 1,000 kg. The structure is usually aluminum extrusions with linear guides that drive from a belt or ball screw. The belt driven actuator is useful for long travel applications where the travel may exceed 10m. Install all the motors as per application.
A servo linear actuator is an actuator combined with a servo motor and can be push / pull or locate. The servo motor allows the motor to exchange information with the external control system and control. This allows for changes in speed, stroke, torque control, etc. Serservo actuator can also be used when 100% duty cycle is required.
