Air motors- Why are these motors something to be preferred?
Air motors are used for producing continuous rotary power from the compressed air system. These boast number of benefits over the electric motors. The advantages are:
- As these do not require electrical power so these could be used for the volatile atmospheres.
- These generally comprise a high density of power and so a smaller air motor could deliver the same power as the electric counterpart.
- The electric motors are unlike the air motors and could operate without requiring the auxiliary speed reducers.
- The overloads could exceed the torque of stall and generally cause no harm to the air motors. With electric motors however overloads could trip the circuit breakers and therefore an operator must reset them before the equipment is restarted.
- The motor speed could be regulated along with simple flow control valves instead of expensive as well as complicated electronic speed controls.
- The motor torque could be varied simply through the regulation of the pressure.
- These motors do not require magnetic starters, overload protection, or the host of support components that are required by electric motors.
- These motors generate less heat than electric motors.
The common designs for the air motors are inclusive of the rotary vane, radial piston, diaphragm, and much more. These motors are commonly used for industrial applications. Even so, the usage of these motors ranges from the food industry, medical, and even the nuclear power generation.
Air motors occupy a niche as far as the sources of power are concerned. It is well suited to the applications which need a compact, lightweight source of smooth as well as vibrationless power. These motors stop and start almost instantly and could provide extremely variable torque and speed without any complicated controls. These motors operate in hot, corrosive as well as wet environments without any damage and are least affected by continuous stalling as well as overload. Apart from this, these are instantly reversible and unlike the electric motors can run cool and start without any shock. There is no heat buildup as well as electric sparks for damaging the motor.
As these are cooled constantly through the injected air so these motors would not overheat even at high speed. These motors have been a popular choice in environments where the danger of explosion exists.
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