Linear Actuators: Types and Characteristics

A Linear Actuator is totally different from electrical motor because it applies force in a linear way instead of rotationally. The linear motion might be achieved in numerous ways and a linear actuator is without doubt one of the devices that may covert rotational motion to linear motion.

Mechanical type

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

Hydraulic type

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

Electro-mechanical type

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

The modern linear actuators come in several designs and each manufacture has their own proprietary strategies of making actuators.

Rules of Linear Motion Actuators

The essential operation principle of linear motion actuators is an inclined plane. The lead screw has threads, which act as ramp and allow small rotational pressure that can be utilized over lengthy distance for achieving the movement of large load within a shorter distance.

Variations in Linear Motion Actuators

There are completely different variations in the basic design of linear actuators. Many of the units have general improvements like higher speed, effectivity or load capacity. Nowadays, manufacturers are also focusing more on reducing the dimensions of those actuators. There is 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 quicker velocity, higher accuracy and higher acceleration. These are used for gantry axes, general goal position, gantry axes and assembly machines. Linear actuators are specially meant for use in adverse conditions and act as replacement towards different 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 much noise. Many DC actuators available in the market are water proof. Buyers can opt for commonplace as well as custom-made range of actuators depending on their want and budget.