An actuator is a device that activates a system based on the principle of dynamics. In fact, it is an American term for motor and it has numerous applications in hydraulic, pneumatic, electronic and allied streams of engineering.
Actuators facilitate steady and critical ratio of power and speed for optimum ergonomic solutions for a wide range of industrial and other complex operations of machinery, gadgets etc.
As compared to traditional electrical motors which function due to circular or rotary motion, linear actuators generate the thrust in a straight line. Hence they are extensively used in machinery, automobiles including gigantic earth moving and material handing machines, construction equipment and numerous hospital aids and gadgets. Read more
The statement that the science of dynamics based on hydraulics has revolutionised the entire spectrum of engineering needs no second opinion. Similar to a tiny chip in an electronic gadget working wonders, in hydraulics it is the mini power unit which has immense potential of capacity to render numerous functions. In fact it is mind boggling. The applications range from static to mobile and industrial systems. This micro power pack is compatible for AC or DC single and double action utilities.
The Delhi NCR based Dantal Hydraulics which is among leading Indian companies in the design, development and manufacture of hydraulic systems including various components has conceptualised and produced such power units for numerous applications, particularly for garages and vehicles. Some of these are: Read more
This is a true story of an inquisitive journalist. Watching an off-shore rig of Oil and Natural Gas Commission (ONGC) on the Bombay High during early 1980s from a helicopter or aboard an OSV (off-shore supply vessel) was a delight for him. He would grab every opportunity of visiting Sagar Samrat and another rig as and when the occasion arose for coverage in the magazine for which he was the correspondent in Bombay.
He used to wonder as to how such an expansive platform was hoisted and placed on the mammoth jacked up rigs in the middle of the sea with the anchor winches operating round the clock by turns. And then came the day in late 1982 when a gigantic rig assembled at the Robin Shipyard in Singapore was towed and tugged by several barges to Bombay.
All this while, this journo’s inquisitiveness grew with each passing day and after covering the event of formal induction of this new rig from Singapore, he sought an exclusive visit by an OSV to watch its commissioning that was to take place a fortnight later. Three weeks later, he was thrilled to receive a telephonic call from the PR Manager as well as an invitation from the Director of Engineering to watch the commissioning of the new rig. Read more
Applications of hydraulic and pneumatic engineering have literally revolutionised the industrial scenario. So much so, right from the day-one when the utility of French scientist Blaise Pascal’s theory was given a try in mid-1660s and a century later the British innovator Joseph Barmah conceptualised his innovation of press, hydraulic solutions have streamlined the process of almost all the products and services. And today, this science of fluid-based dynamics can be witnessed or experienced in every other activity around us. Be it on the ground, up in the sky or over the river and sea including underwater, there is an application of hydraulic technology in operation.
Over the past couple of centuries, the never-ending study and research in this stream of engineering have resulted in the development of thousands of concepts and products to facilitate the functioning of a system based on hydraulics. One of them is the electro hydraulic actuator. EHA in short, it is a fully self contained actuation system that is energised by an electric source and transforms an input command signal into motion. It has been extensively used for the operation of wide range of systems.
The EHA is widely used in the following arenas among others: Read more
Almost the entire range of machinery and thousands of other systems or appliances function on account of linear actuators incorporated in their design. It is the actuator that generates motion and lends momentum to an engineered system. Depending on the application such as whether it should be rotary, pull, push, lift, hoist, drop, telescopic or to and fro, the actuator is designed and manufactured. The power source in it also varies such as manual, electric, air pressure, hydraulic, pneumatic, piezoelectric or ultrasound among others.
In the design, an actuator for standard systems usually has the motor as a separate cylinder attached to its side, either parallel or perpendicular. The motor is attached to the end of the actuator for energising the system. Compact actuators have specially designed motors that try to fit the motor and actuator into the smallest possible shape.
The actuators provide a safe, quiet and clean movement with accurate and regulated motion. They are energy efficient and have a long lifetime with little or no maintenance. Incorporating an actuator is very easy as compared to other energisers such as hydraulic systems. Space wise, it takes least possible space since there is no involvement of pumps or hoses in the system. Apt functioning of a system or a product depends on the actuators adaptability to a wide range of specific of applications. Read more