Linear Actuators: Types and Characteristics

Linear Actuators: Types and Characteristics

A Linear Actuator is completely different from electric motor because it applies force in a linear way instead of rotationally. The linear motion could be achieved in several ways and a linear actuator is one of the devices that can covert rotational motion to linear motion.

Mechanical type

A mechanical actuator converts the rotary motion to linear displacement by way of screws/gears to which a knob is attached. One of many renowned examples of mechanical actuator is a jackscrew or automobile jack. Mechanical actuator is utilized in lasers and optics for manipulating the position of mirror mounts, linear levels and lots of more positioning instruments.

Hydraulic type

A hydraulic actuator or cylinder has a hollow cylinder with a piston inside it. Controlled linear displacement of the piston is achieved by pressurizing/de-pressurizing sides of the piston. Hydraulic automobile jack is the most typical example of a manually operated hydraulic actuator.

Electro-mechanical type

A linear electromechanical actuator is a in which a nut is the principle part of the motor. The lead screw of the actuator would not rotate and the lead nut is rotated by the motor. It’s just like mechanical actuator but an electric motor is used instead of a management knob or handle.

The trendy linear actuators come in several designs and every manufacture has their own proprietary methods of making actuators.

Rules of Linear Motion Actuators

The fundamental operation precept of linear motion actuators is an inclined plane. The lead screw has threads, which act as ramp and allow small rotational drive that can be used over lengthy distance for achieving the movement of huge load within a shorter distance.

Variations in Linear Motion Actuators

There are totally different variations within the primary design of linear actuators. A lot of the devices have general improvements like higher speed, effectivity or load capacity. Nowadays, manufacturers are also focusing more on reducing the scale of those actuators. There’s variety of actuators available in market, which fits particular industrial needs of buyers.

What make linear motion actuators better in comparison to other motors are their faster speed, higher accuracy and larger acceleration. These are used for gantry axes, general objective position, gantry axes and assembly machines. Linear actuators are specifically meant to be used in adverse conditions and act as replacement against other hazardous actuators for performing the job.

Apart from linear actuators, DC actuators are also used for performing similar applications. These run smoothly and do not produce a lot noise. Many DC actuators available in the market are water proof. Buyers can go for customary as well as custom-made range of actuators relying on their want and budget.