The air compressor is an essential tool for the operation of any workshop, ensuring that various activities can be carried out efficiently and quickly.
From powering pneumatic tools to carrying out tasks such as retreading, choosing a good air compressor can make all the difference to your workshop’s productivity.
In this article, we explain how the different types work and which ones you should choose for your workshop.
What Is An Air Compressor?
An air compressor is a piece of mechanical equipment that converts energy (usually from an electric motor, petrol or diesel engine) into compressed air.
This compressed air can be stored and used in a variety of applications, from filling tires to using pneumatic tools such as paint spray guns and impact wrenches.
What Is An Air Compressor For?
The air compressor can be used for a variety of purposes in the day-to-day running of a workshop. The following tasks stand out:
- Car painting;
- Car washing;
- Inflating tires to the right pressure;
- Sandblasting parts;
- Using pneumatic wrenches.
In these situations, compressed air is an essential complement to getting the job done quickly and successfully.
The operation of an air compressor is relatively simple.
What Does The Air Compressor Do?
The compressor transforms mechanical energy into pneumatic energy by using a motor to compress the air and store it in a tank under high pressure.
When the air is released, it performs mechanical work, which can be used to operate tools or perform other tasks.
What Are The Main Components Of An Air Compressor?
Air compressors, regardless of type, have essential components for their correct operation:
- Engine: powers the compressor, whether electric or combustion;
- Air Tank: where the compressed air is stored for later use;
- Safety Valves: ensure that the pressure inside the tank does not exceed safe limits;
- Filters: remove impurities from the air before it is compressed;
- Pressure Regulator: controls the pressure of the compressed air to be used.
What Types Of Air Compressors Are Available?
When choosing an air compressor for your workshop, it’s important to understand the different types available on the market.
Explore the characteristics and advantages of the 3 most common types of air compressor:
1. Piston Compressor
The piston compressor works with a piston (or plunger) that moves inside a cylinder to compress the air.
These compressors are oil-lubricated to reduce friction between the piston and the cylinder, making them ideal for applications requiring high pressures.
In addition to their low cost, they are very easy to maintain.
2. Rotary Screw Compressor
The rotary screw compressor uses two rotors that rotate in opposite directions to compress the air.
These compressors are generally more efficient and quieter than piston compressors and are widely used in industrial environments.
They are low-noise, energy-efficient and have the possibility of recovering the energy used. They have a large storage capacity and allow the temperature of the compressed air to be lowered.
3. Rotary Air Compressor
This type of compressor is more modern and works with two spiral elements.
While one spiral remains stationary, the other moves, creating small pockets of air that are gradually compressed and stored.
Its operation is silent and maintenance is simple. It uses no oil, which helps to eliminate air contamination, and has a compact design, taking up less space.
Is It Better To Choose A Portable Or Stationary Air Compressor?
The choice between a portable air compressor and a stationary model depends on the needs of your workshop, as both have advantages and disadvantages.
- Portable Air Compressor: ideal for small workshops or those who need mobility. It can be used in various locations, but has a smaller air storage capacity;
- Fixed Air Compressor: suitable for larger workshops where there is constant use of compressed air. This model has greater capacity and durability, but is more difficult to move.
If your workshop needs versatile and portable equipment, a 220v mini air compressor could be a good option.
Is A Portable Air Compressor Enough For A Workshop?
In small workshops or for lighter uses, a portable air compressor may be sufficient.
However, for workshops with a larger volume of work and which use several pneumatic tools at the same time, a stationary compressor is ideal.
Which Compressor Is Best: With Or Without Oil?
The main differences between oil-filled and oil-free air compressors are:
- Compressors With Oil: require regular maintenance, but are more durable and efficient;
- Oil-Free Compressors: they are lighter, require less maintenance, but may not be as durable as oil-filled models.
The choice depends on your needs and how often you use the equipment.
How To Choose An Air Compressor?
When choosing a compressor for your workshop, consider factors such as:
- Tank Capacity: the volume of air the compressor can hold is crucial for workshops that use several pneumatic tools;
- Maximum Pressure: check the pressure required for your tools and make sure the compressor can supply enough;
- Portability: for small workshops or those requiring mobility, a portable compressor may be the best choice.
A compressor can overheat due to various factors, including motor malfunction, overwork or lack of maintenance.
What To Do If The Air Compressor Starts To Overheat?
Se o seu compressor de ar começar a sobreaquecer, siga estes passos:
- Switch off the equipment immediately to avoid damage;
- Check the oil levels and make sure the filters are clean;
- Make sure that the compressor is not being used above its capacity.
If these steps do not solve the problem, then you should contact the manufacturer for technical assistance.
How To Increase Air Compressor Pressure?
To increase the compressor’s pressure, simply adjust the pressure regulator on the equipment’s control panel.
However, it is important never to exceed the maximum pressure recommended by the manufacturer, to avoid damaging the compressor and the tools.
How To Extend The Life Of An Air Compressor?
To ensure the compressor’s longevity, it’s important to follow a few recommendations:
- Regular Maintenance: periodically check oil levels, filters and components such as valves;
- Proper Storage: keep the compressor in a clean, dry place, away from dust and moisture;
- Correct Use: use the air compressor within the specifications recommended by the manufacturer and do not overload it.
How Much Should An Air Compressor Cost?
The price of a compressor varies, as it depends on whether you want one for domestic or professional use and its technical specifications.
Generally speaking, they range from tens to thousands of euros.
Where To Buy Accessories For An Air Compressor?
You can find accessories for air compressors in stores specializing in industrial tools and equipment.
At KROFtools, you’ll find a wide range of tools and equipment that are essential for improving the service of your workshop and that require compressed air.
So, make the choice that best suits your needs and you’ll see how much more efficient your work will become.
Looking to find out more about the automotive world? Then follow us on Facebook and keep up with all the content we share on a daily basis.
