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All About Air Motors

9/11/2013 6:12:07 PM | by Anonymous

Air Motors

The motors provide an excessive continuous linear or rotary source of power by converting the compressed air energy to mechanical work. Airs motors have existed and found a widespread of success in the hand held tool industry over the years and are still continuing to expand their use in to the transportation industry. Air motors are commonly used in applications that require high and low power outputs and it has two motions which are linear and rotary. Linear motion can come operate either from the diaphragm or piston actuator whereas rotary motion is supplied by a vane type of air motor or piston air motor. The three common types of air motors are namely vane, piston and turbine.



The motor has several advantages and features which include using in volatile heat than electric motors. And it is a famous belief that because of their toughness and versatility, air motors can be a prefect power source for the industrial applications. Furthermore, they offer a greater power density, does not require auxiliary speed controller, generate lesser heat and can be used in more volatile atmosphere as they need not electric power.


Vane Motors

Vane motors are also known as rotary and it uses air to produce rotational motion to a shaft by using axial vanes fitted into slots running throughout the motor’s length however each slot of the air motor is fitted with a free sliding rectangular vane. The pressure is resulted from the compressed air in the slots to chambers to allow vane to rotate and turning the motor so that the air moves from one chamber to another. This type of air motors are specifically used in applications that requires low to medium power outputs. Rotary motion is used to start up large industrial diesel or gas engines that are natural. It stores the energy in the form of compressed air so that it can enter the sealed motor chamber and this will cause the rotor to turn at a high speed.


Turbine Motors

Turbine motors are operating with a guiding air into the turbine wheel that made from a rotor with curved blades. This will set in the motion when the air comes through to the nozzle and hits the blades also this can easily modify the limit of the air flow through the motor. Generally, turbine motors are generally used in low pressure and it has high velocity tools like dental drills.


Pistons Motors

Pistons motors are used in high power machines that require a high starting torque. It has a number of cylinders, pistons and or sliding pieces that makes up the piston motors. They are arranged in either an axial or radial fashion. The air moves into the cylinder which contains the pistons and the pressure will act on the pistons after which it will cause the effect of them to slide outward. This force will make the cylinder rotate and create the torque that turns the motor.



Due to its high power density, the smaller air motor can deliver an equitant amount of power as compared to a electric motor. Also they are not more susceptible to overload than electric motors and air motors generate lesser heat too. Air motors are quieter, provides efficient energy and reduce in green house gases. Users at homes can save up to 60-80 percent on utilities usage as compared to electric motors and it only uses 75-125 watts. As compared to the average electric motor, it can use up to 350-500 watts during low speed circulation. But air motors are more likely to be expensive to operate than electric motors as it controls speed more accurately.

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