Oil injected screw compressors are the most popular compressor group on the market.
Our company offers these compressors from the most renowned manufacturers: Atlas Copco and BOGE.
Screw compressors with oil injection, unlike reciprocating compressors, are adapted to work under continuous load, which also has a positive effect on their durability. We have seen many cases where a compressor with a 90% load was able to work more than 25,000 hours without overhauling the main screw stage.
Atlas Copco GX series rotary screw compressors are the core range of oil-injected, air-cooled, belt-driven and noise-enclosed rotary screw compressors. These compressors are controlled by electromagnetic pulses - a pressure switch. Optionally, these compressors can be equipped with an expansion tank with a capacity of 200 or 500 liters, a refrigerant dryer (only versions with a tank), end filters or an automatic condensate drain from the tank.
These compressors are available with motors from 2.2 kW to 7.5 kW (400V / 50Hz / 3Ph) from the 4.1 kW motor, Y / ∆ start is available, while for 2.2 - 4.1 kW motors, the start is direct. These compressors are only available with a pressure setting of max. 10 bar and the capacity range FAD is from 240 to 840 l / min. These compressors are characterized by a low noise level from 61 to 64 dB. Atlas Copco screw compressors of the GX series are devices of a simple structure, characterized by trouble-free operation and simple service available to each user.
Atlas Copco G series screw compressors
The next group of oil-injected screw compressors. Like the GX models, they are air-cooled and have a belt drive. The soundproof housing is standard. The main difference from the GX models is that the G compressors are equipped with a microprocessor controller that fully controls the operation of the compressor. Optionally, the compressors can be equipped with an expansion tank of 270 or 500 liters, an installation with a refrigerant dryer or aftercooler, compressed air filters, or an automatic condensate drain from the tank. These compressors are available with motors from 7.5 to 22 kW (400V / 50HZ / 3Ph) and Y / ∆ starting.
The manufacturer of these compressors, in this group, provided the possibility of ordering a compressor with a pressure setting of 7.5, 10 or 13 bar. The FAD capacity range for these compressors is from 834 l / min (G7-13 bar) to 3720 l / min (G22-7.5 bar). The noise level for this group of compressors ranges from 65 to 71 dB. G series screw compressors are the basic group of compressors for small production plants, they are characterized by a simple structure and the possibility of performing a basic periodic service by the user on his own.
Atlas Copco GA / GA + series screw compressors are the most technologically advanced group of oil-injected screw compressors in the Atlas Copco portfolio. As standard, the compressors are air-cooled, but for larger models it is possible to optionally order water or other cooling. The GA 5-11C models have a belt drive, from the GA11 + model the drive is linear from the electric motor (insert and flexible coupling). All GA compressors have an aftercooler with automatic condensate drain as standard equipment. In this series of types, the compressor is supervised by a controller with an Elektronikon Swipe or Touch panel.
Screw compressors with dryer - atlas copco compressors
These compressors have a very wide range of optional equipment. GA 5-11C models can also be additionally equipped with an expansion tank of 270 or 500 liters. Examples of optional equipment for this series of types include: built-in refrigerant dryer, by-pass for the dryer, compressed air end filters, built-in condensate separator and a number of additional electrical protections or additional equipment enabling operation in difficult conditions such as high temperature, high dust, humidity, rain. .
In our offer on the website you will find GA series compressors with engines from 5.5 to 30kW, but on request, we can also offer Atlas Copco compressors of the GA + series with engines up to 90kW. GA / GA + compressors have the best performance ratio (FAD) relative to the electricity used for this purpose. Also, the noise level is almost at the lowest level among comparable compressors on the market, ranging from 60 dB (GA5) to 70 dB (GA30).
The type of controller used in these compressors allows for remote monitoring of the compressor's operation as standard equipment - it is enough to connect the compressor to the company's network. Optionally, the compressor can also be remotely controlled from the user's desktop. This group of compressors is dedicated to medium and large production plants for which failure-free and long operation is the basis for choosing a device supplier.
Oil-injected Atlas Copco screw compressor
Atlas Copco GA VSD + screw compressors are oil-injected screw compressors with an innovative design and a modern electric motor cooling system by compressor oil. All models in this group of compressors have an inverter for the electric motor, which allows the compressor to work and produce compressed air in exactly the amount that is currently needed by the user. The scope of additional equipment for this group of compressors is also very wide and similar to the GA / GA + group of compressors. The most advanced Elektronikon Touch controller is a standard in this group of compressors.
Thanks to the possibility of installing an optional energy recovery system inside the compressor, they are the most environmentally friendly screw compressors, as they try to constantly adjust the electricity consumption to the current needs of the user and reuse the electricity used. GA VSD + compressors operate in a pressure setting from 4 to 13 bar and it is the user who determines what pressure is to be controlled by the controller and maintained in the compressed air network. The standard offer of GA VSD + compressors presented on our website applies to compressors with a power of 7.5 to 37 kW. We encourage you to submit inquiries for Atlas Copco GA VSD + compressors with higher powers via our website.
Atlas Copco GA VSD + screw compressors, thanks to the innovative technology of cooling the electric motor, have a very compact and compact design with the smallest possible surface area necessary for the operation of the compressor. Due to the ever higher electricity prices, many companies have already decided to buy Atlas Copco screw compressors with a built-in inverter for the electric motor - certainly many of them, the investment outlay for the purchase of such a compressor, has already paid off!
BOGE screw compressors
BOGE screw compressors, CL / CLF series - this is the basic series of oil-injected screw compressors from the German manufacturer - BOGE. They are mainly characterized by a linear drive transferred from the electric motor to the screw stage. They are air-cooled compressors. It comes as standard without a soundproofing housing as units mounted on a frame. Optionally, these compressors can be installed on expansion tanks with a capacity of 90, 270, 350, 500 or even 750 liters.
The compressor is controlled by the Base microcontroller with numerous additional functions that allow for the optimal operation of the compressor. CL series compressors are equipped with motors with power from 2.2 kW to 15 kW and voltage 400V / 50Hz / 3Ph. All models have a Y / ∆ start. Optionally, compressors from the CL / CLF series can be ordered with a soundproofing casing and built-in on an expansion tank and with a refrigerant dryer.
The CLF version has an inverter for a 7.5 kW electric motor - one CLF 9 model (8, 10 or 13 bar). The smallest model, the CL 3 and CL5, is only available with a pressure setting of 10 bar, the CL 7 model is available with a pressure setting of 10 or 13 bar and the other versions are available with a pressure setting of 8 or 10 bar. The FAD capacity range for these compressors is from 230 l / min to 2250 l / min. Like the Atlas Copco GX / G series compressors, they are the entry-level screw compressors for small and medium-sized manufacturing companies.
BOGE C series screw compressors - is a series of BOGE screw compressors with belt drive and soundproof housing. The compressors in this series are also air-cooled. The basic versions are stationary compressors in the engine power range from 3.1 kW to 22 kW (400V / 50Hz / 3Ph). All compressors in this range are controlled by the BASE Control microcontroller and the motor start-up is Y / ∆.
The FAD capacity in this group of compressors ranges from 427 to 3640 l / min, and the pressure settings are 7.5; 8; 10 and 13 bar. Optionally, all models can be ordered with a built-in refrigerant dryer and for installation on an expansion tank of 270, 350, 500 or even 750 liters.
Additionally, versions with motors above 11 kW can be equipped with an inverter for the electric motor. An unquestionable advantage of BOGE compressors from this series is their quiet operation (from 59 dB) thanks to the standard soundproofing casing. BOGE C series screw compressors are an excellent alternative to Atlas Copco G or GA compressors and are recommended for small or medium-sized manufacturing companies.
BOGE S series screw compressors - is a group of oil-injected screw compressors for manufacturing companies with compressed air consumption above 3,800 l / min. They are air-cooled and belt driven compressors. As standard, all of them have a soundproof housing and are controlled by the advanced FOCUS 2.0 controller. The compressors in this series are available in the motor power range from 22 to 250 kW (400V / 50Hz / 3Ph - Y / ∆ start) and the pressure setting range is from 7.5 to 13 bar.
Optionally, compressors in this series can be retrofitted, among others with built-in refrigerant dryer, inverter for the electric motor, energy recovery system via heat exchanger and cyclone separator with bacomat for the standard compressed air aftercooler. Some BOGE S-series compressor models can be water-cooled or supplied with a 380-460V / 60Hz motor.
Thanks to the extended FOCUS 2.0 controller, these compressors also have anti-freeze protection (operation down to -10 degrees C) - this function is also provided by the BASE Control controller installed in smaller models of BOGE compressors. Another function of the FOCUS 2.0 controller is the ability to manage the operation of a group of compressors with the visualization of the compression process on the user's desktop. S-series oil-injected rotary screw compressors are the perfect alternative to Atlas Copco GA +-series rotary screw compressors.
BOGE SL / SLF series screw compressors - just like the BOGE S series of compressors, are dedicated to operation in larger production plants. The drive transmission is different than in the case of BOGE compressors from the S series - the SL / SLF version has a rope drive from the electric motor with the use of a flexible coupling. As standard, the BOGE SL / SLF series oil-injected screw compressors are air-cooled - water cooling is optional. The compressors in this group are available in the electric motor power range from 22 kW to 315 kW (400V / 50Hz / 3Ph - Y / ∆ start) and the pressure settings range from 7.5 to 13 bar. Additionally, the SLF version of the compressors has a built-in inverter for the electric motor, which can optionally be supplied with a power supply of 380-460V / 60Hz.
Optional equipment on this series of compressors also includes an integrated refrigerant dryer, energy recovery via heat exchanger and a cyclone separator with bacomat for the standard fitted compressed air aftercooler. The BOGE SL / SLF series rotary screw compressors are controlled as standard by the advanced FOCUS 2.0 microcontroller. They complement the BOGE S-series oil-injected screw compressors and are an excellent alternative to Atlas Copco's GA + series of screw compressors.
We provide a 24-month warranty for all oil-injected screw compressors, which can be extended to 60 months through a service contract. Our warranty and post-warranty service will provide you with trouble-free operation of the devices and the spare parts department will provide you with supplies of consumables or other parts.
We encourage you to submit inquiries via the form available on our website for screw compressors, which are listed on our website or with the parameters you need in your company.
Screw compressors - the most frequently asked questions
Which compressor should be a regular, constant speed or inverter for the electric motor?The correct selection of the compressor to the user's needs is the most important. A wrongly selected compressor will cause problems with its operation. A constant speed screw compressor works best in continuous mode with a load of 80-100%. When we are able to determine the amount of compressed air consumption and it is a more or less constant value, then you can easily choose a standard compressor with a constant speed so that its efficiency is in the range of 80-100% of air consumption by our plant. However, when we are not able to accurately determine the consumption of compressed air and it is additionally very diverse, we should not hesitate to choose a compressor with an inverter for the electric motor. This will allow the compressor to operate in its optimal range.
Can the compressor stand in the hall or should it be placed in the compressor room?Currently available compressors are so quiet that they can work in the production hall. However, the advantage of creating a room for the compressor is that it will not be accessible to unwanted people and we can create ideal working conditions for the compressor (no dust, proper ventilation).
Which causes problems with the proper operation of the compressorMost of the problems with the proper operation of the compressor result from improper, more precisely from insufficient ventilation and cooling of the compressor. In the process of purchasing a compressor, we must always take into account that it is an air-cooled device that uses enormous amounts of air for cooling. Proper ventilation (intake and hot air outlet) in the compressor room will ensure its trouble-free ventilation. The second case, when problems with the correct operation of the compressor arise, result from the power supply (too low voltage, too low amperage or too small cross-section of the power cables) - the compressor must have a separate power supply with its own slow-blow fuse with the value recommended by the manufacturer.
How to get the most out of your screw compressor?In order to optimally use a screw compressor, it should be correctly selected for your needs and additionally use heat, which is a by-product of the compressor's operation (heat the rooms through ventilation ducts or install a heat exchanger in the compressor or next to it). Then we can be sure that the additional heat generated in the compression process was used and not irretrievably wasted.
What is the lifetime of screw compressors?Manufacturers of Atlas Copco and BOGE compressors, which are in our offer, specify the minimum compressor operation time for overhaul at 25 thousand. engine hours and in principle, a guarantee can be given for this period of operation of the screw stage. We have confirmed cases of compressors with a mileage of over 30 thousand kilometers. engine hours without major overhaul - this is mainly due to the correct operation and selection of the compressor to the user's needs.