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A Quick Guide to Rotary Vane Air Compressors

Purchasing an air compressor can be quite challenging because of the available variety in the market today. Because there are just too many options for size, configuration, capacity, and even brand, buyers like you can get easily confused about which system is right for your application.


Rotary pumps are commonly used in various industries, from power steering in cars to delivering pressure for coffee dispensers, and more.


In this post, we are going to have a quick look at the structure of rotary vane air compressors.


A rotary vane compressor has a cylindrical rotor inside a cavity or a housing. This rotor has a few slots or grooves wherein the vanes are placed. The rotor is placed in a position where it is almost in contact with its housing. This off-centre placement lets the vanes to be pushed out using centrifugal force. This allows air to be trapped between them. This air is reduced in volume and then pressured through the rotation motion of the rotor.


Here are some information about rotary vane compressors to help you decide whether or not it suits your needs:



The maintenance requirement for rotary vane compressors mainly come from cleaning out the oil filters and air filters, replacing the oil, and replacing both filters sometime after continuous use. Well, none of these components are expensive and are almost always available. The rotary vane air compressor has a long lifespan if the upkeep schedule is properly observed. The main moving component of this type of compressor are the vanes so you’d think they’d face the most wear. But not really. Vane compressors have protective oil films so they don’t come in direct contact with either the inside of the rotor or the grooves. So really, timely maintenance is all that is needed for this compressor.



The capacity of the compressor to run at peak performance before overheating is also called its duty cycle. It is typically measured as a percentage and is a very important factor to be considered when buying a compressor. If you will require your compressor to run for extended time periods at high efficiency then you definitely need a high duty cycle percentage. The rotary vane often offers close to a 100% duty cycle percentage. That means it can typically operate at full tilt without wearing the parts and overheating because of its lower revolutions and operating temperatures that is coupled with liquid cooling.



Rotary vane compressors are typically more expensive up front, but given its low cost maintenance and typically long life span, then that high initial cost is definitely justified. Additionally, they are low on power consumption with the added benefit of lesser noise and lower temperature, too.


Now you know what a rotary vane basically is, as well as its primary attributes. If you need further information you can always reach out to us and we’d be glad to answer all your compressor inquiries.



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