The heart of an air compressor is the screw element which is also called air-end. The rotary screw compressor is a “Positive displacement” compressor, which means that the air is physically squeezed together by an external force. Air Compressors are expensive and it doesn’t make sense to get a new one when the air-end is at the end of its service life.
Most commonly used names are air end, screw air end, screw block, block, oil lubricated air end, and rotary screw. Air ends are needed by compressor and compressed air system manufacturers. Oil injected screw air end’s benefit is its very simple construction, where the air is compressed between two meshing rotors and against the frame with a thin oil film in between.
The air gets trapped between the male and the female rotor and is transported to the exhaust side of the element in ‘air pockets’, pockets of air that are trapped between the rotors. The hot air will also heat up the rotors and the metal housing of the compressor element. Because the oil-free type compressors don’t have any oil, the clearance between the rotors and the housing must be much smaller compared to oil-injected type screw elements.
The new highly efficient airend delivers the highest quality compressed air at a low rotational speed, to help minimise the unit’s energy consumption and achieve excellent performance. Using a genuine CompAir air end guarantees that your compressed air system will operate reliably and efficiently. Additionally you will receive a credit note on the air end invoice price by returning the old air end.
Our oil-injected screw air ends create the heart of your compressor system. Used with our wide range of components, you can build the perfect compressor package with ultimate efficiency, low noise, at the highest quality standards. Quality assurance – bench test of every air end before leaving the factory.
The best way to know “When” to have a running air end rebuilt will come from the results of performing routine analysis of oil samples, bearing vibration trends, bearing temperature trends, and air end temperature rise. Since oil flooded rotary compressors mix the incoming air with the oil during the compression cycle, it is vital that the incoming air is free from all contamination and chemicals. Air end rebuild costs may vary depending on manufacturer, but in general, a complete air end rebuild can be accomplished for 50% of the price of a new air end.
A replacement airend is simply ordering an entirely new airend instead of servicing or upgrading the existing one. Typically, a replacement airend proposal is provided along with the overhaul proposal, so all options are understood upfront. You may choose to purchase a replacement airend but still get the original airend overhauled to keep as a spare.
what is a compressor air end Related Question:
What does compressor air end mean?
It’s that part of the machine where the actual compression takes place. It is the heart of the rotary screw air compressor. Often, the compressor screw element is also called air-end. They are constant flow (volume) with variable pressure compressors.
What is a compressor sump?
Each unit has an air/lubricant separator and sump assembly that filters and collects the compressor lubricant that was injected into the main compression elements during normal operation. When a compressor is loaded, this sump is fully pressurized.
How does an air compressor work?
The compressor draws in air and creates a vacuum to reduce its volume. The vacuum pushes the air out of the chamber and into its storage tank. Once the storage tank reaches its maximum air pressure, the compressor turns off. This process is called the duty cycle.
Do rotary screw compressors run constantly?
For screw compressors, the cooling systems are much better, so the compressors can run constantly with no issues. But running constantly usually means the units are not very efficient. Screw compressors have a few different ways to control the output to match the actual system flow.
How does an oilless air compressor work?
An “oil-free” air compressor does not use any lubrication in the compression chamber. Instead, these compressors use alternate materials that protect the pump, such as water or a Teflon coating, and allow the mechanism to move smoothly without the need for any oil-based or synthetic lubrication.
What are the three main parts of an air compressor?
The basic components of the air compressor are the electric motor, pump, and receiver. The receivers can be vertical or horizontal and have different size and capacity.
What are the four main parts of an air compressor?
They consist of a piston, connecting rod, crankshaft, cylinder, and valve head. The air is compressed in the following manner: The valve head at the top of the compressor tank draws air in by the downward movement of the piston in the cylinder.
What are the four stages of compression?
Compression occurs within the cylinder as a four-part cycle that occurs with each advance and retreat of the piston (two strokes per cycle). The four parts of the cycle are compression, discharge, expansion and intake.
What is a rotary screw air compressor?
Rotary screw air compressors operate by trapping air between two meshed rotors and reducing the volume of that trapped air as it moves down through the rotors. This reduction in volume results in compressed air, which can then be used to power air tools, inflate tires, or in numerous other applications.
How does an air compressor inlet valve work?
The air compressor inlet valve regulates the capacity of your rotary screw compressor. The air compressor unloader valve regulates the amount of air that is sucked in by your air compressor. By opening and closing the air intake, the capacity of a rotary screw compressor is regulated.
What is oil flooded compressor?
Oil-flooded compressors have lubricated compression chambers and use air/oil separators to remove the oil from the compressed air. However, as the oil collects, the oil can mix with the condensed water and cause problems for other components of your equipment as it makes its way downstream and into your facility.
Where do air compressors get air?
Air compressors work by forcing air into a container and pressurizing it. Then, the air is forced through an opening in the tank, where pressure builds up. Think of it like an open balloon: the compressed air can be used as energy as it’s released.
Do air compressors run out of air?
A compressor tank doesn’t produce air. It only stores air. It is much more important to have a big enough pump and motor, because if you are producing as much air as you want to use, you’ll never run out of air, no matter how small the tank is.
Why are air compressors used?
Probably the most common use of air compressors in everyday life, refrigerators, freezers and air conditioners all use air compressors to chill the air. Air compressors are included in vehicle engines for heating and cooling, as well as in air brakes for larger trucks and trains.
What’s the average lifespan of a rotary screw air compressor?
On the other hand, rotary screw compressors have an average lifespan of between 35,000 and 40,000 hours. They run at high speeds and tend to be very loud, so they should be kept in a dedicated compressor room when in use.
