Thursday, April 26, 2012

Linear Actuators Assist in Automation

To control a mechanism or system, a mechanical device known as actuator is used. It is operated by an energy source like hydraulic fluid pressure, electric current or pneumatic pressure and converting that energy into some kind of motion. Whereas a linear actuator is the type of actuator that when driven by a non-linear motion, creates linear motion (as compared to rotary motion, e.g. of an electric motor). The best ways of achieving Mechanical and hydraulic actuation are hydraulic and linear actuators. To be precise it is a mechanical device that creates force and motion, from a given energy source, in a linear manner, as compared to rotationally like an electric motor.

They modulate control valves, move work tables on industrial machines, move printer and scanner heads back and forth on computer equipment and drive material handling equipment and robotics. They drive lifts and shovels on construction equipment and provide the oscillatory motion of audio loudspeakers. The magical machines are powered by 12 or 24 volt power sources. A power adapter, car or marine battery can be connected to an actuator with ease. These instruments are popular in many fields such as medical equipment, furniture, consumer products, hobby design and any other products where automation is needed.
Conversion of rotary motion into linear motion is the operational basis of Mechanical linear actuators. A few simple types of mechanism generally get the conversion accomplished.

The DC linear actuators can be combined with control boxes, rocker switches and mounting brackets and the control box will enable you to connect to a regular (AC) home outlet and the mounting brackets are designed specifically for mounting our PA-02 actuators. It takes less than five minutes to set up the control boxes and operate it. Every control box comes with a remote to control the dc mode of the instrument's movement or a foot pedal can be purchased instead.

Most of the linear actuator designs functions on a simple basic principle. The principle is guided by the character of an incline plane. A lead screw threads act as a prolonged ramp that allows a small rotational force to be operated over a long distance to gain movement of a heavy load over a short distance.
Some of the combination of the instrument may be:
Force Speed
120 lbs 1.50 inches per second
160 lbs 1.18 inches per second
250 lbs 0.98 inches per second
330 lbs 0.63 inches per second


Progressive Automations is a popular supplier of the largest on-line selection of small to mid size linear actuators. It provides a large variety of competitively priced linear actuators in different sizes, force and speed.

Wednesday, April 25, 2012

Linear Actuators - Useful Factors to Consider

Selection of hydraulic, pneumatic and electric devices is dependent on the requirement of applications. And one is needed to check the efficiency of motion-based devices which they need to purchase. Usually, linear actuators are easy to mount and need no pipework. And some factors are there which if considered can help one to analyze the performance of the devices. Factors which will be discussed in this article are - linear speed, stroke, push/pull force, service factor, critical speeds and buckling limits.

Linear speed
Either the devices are large or small in sizes; they come with specific linear speed. Ball screw based actuators do not come with critical speeds. As per need and applications, you ca n use the device coming with different linear speed to move or lift anything.

Stroke The maximum possible displacement of actuator, typically in negative or positive excursions from certain central null position is referred as the stroke. And ±1 to ±10 micrometres are the range up to which the stroke can be measured.

Free actuator stroke is known to limit the amplitude of corrected wavefront. Big-time performance can be expected from short stroke actuators. Stroke is measure in mm and can be ranged from 120 mm to 1560 mm depending upon the application for which the device has been designed.

Push/pull force Actuators convert rotary motion into linear displacement with the help of gears and screws. And push/pull force is the factor that defines the performance of the device up to a large extent. And the push/pull force explains the power, capability and expected performance of the device for the desired application. Linear actuator, 20*15*13mm comes with the push/pull force of 10-270g.

Service factor The service factor is the factor which describes the measurement of periodically overload capacity with which the actuators can work without damage or overload. Individuals should know that the linear actuator that comes with service factor i.e. SF is expected to come with reduced life as compared to devices that are operating at rated nameplate horsepower.

Buckling limits The sudden failure of the device when subjected to high compressive stress is called as buckling limits of the linear actuators. Moreover, the failure can be occurred due to elastic instability. Complete loss of load-carrying capacity of linear actuators can make one to suffer. Thus, one needs to check this factor seriously.
From above discussions, it can be said that if these factors are considered, one would be able to get high-performance based linear actuators without any hassle.


It's a nice way to get desired size and quantity of linear actuators through online shops. And Progressive Automations have been serving individuals in this regard in the US and Canada. Customization of products is also possible with this online shop.

Tuesday, April 24, 2012

Why Linear Actuators Are Essential for Business Growth

What is a linear actuator? What are its diverse facets and benefits?

The counters to the above indicated questions would not differ based on the perception of diverse organizations and would lie in the minds of those who have been expansively exploiting and implementing the various techniques of a device that is known as "linear actuator." Various conglomerates have been dynamically reaping the benefits of what is known as a linear actuator. The operative use of such mechanisms paves the right track for any specific business to grow and provide an opportunity to have that competitive edge over its contenders.

An actuator has become nowadays an imperative part of every industry because of the reason that it is so adaptable and flexible. Nevertheless, they can be intricate in their simplest form. It is a mechanical device that is employed for the purpose of controlling a system or mechanism and is driven by an energy source like electric current, pneumatic pressure or hydraulic fluid pressure and transmuting that energy into some kind of motion. You should be cognizant of the fact that you also get what are known as rotary actuators other than linear actuators. They are too operated in almost every industry and can be complex at the same time. For instance, your car's windscreen wiper system is known as the mini rotary actuator.

12V electric linear actuators offer accurate movement in circumstances where space is restricted, and where daintier payloads are used. You can realize the true power of the 12V linear actuators lies in its ability to provide vigorous results while functioning on batter power.

A linear actuator is an easy-to-use and adroit device that has been brought in the market in order to make work stress-free and unpretentious in various fields. Irrespective of the type of fields, you can efficiently make use of such a magnificent device for hobby design, furniture, medical equipment, consumer products, engineering industry or any other related area, they are bound to make your much simpler and unproblematic. It is evident that whenever there is a requirement of automation, this device is zealously used.
Such actuators have been used in diverse applications that exist on this planet. They are basic building blocks as manufacturing automation paraphernalia. Hydraulic power for a linear actuator is a judicious choice if the application is in need of great force to execute the required tasks. They are one of the most sought after tools and their role comes into effect when there is a need to maneuver an instrument or a structure.

Progressive Automations is a leading name and is an on-line wholesaler of linear actuators and lifting columns and caters to various needs of the consumers in the United States and Canada. It offers to its consumers a diverse variety of cost-effective linear actuators in terms of speed, size and force.