Screw compressors
A screw compressor compresses air with two intermeshing rotors. It has no valves or pistons, runs smoothly and can cope with air being drawn throughout the shift. Our range includes 343 screw machines from 2.2 to 315 kW with a pressure of 7 to 20 bar.
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How a screw compressor works
The rotors turn against each other and the space between their lobes shrinks towards the outlet — the air is compressed smoothly, without pulses. In oil-lubricated machines, oil is injected into the rotors to seal the gaps and carry away heat; it is then separated from the air again in the separator. The types of oil and their change intervals are described in our guide Oils for screw compressors. The machine is also known by its full name, the rotary screw compressor.
What you will find in our range
Small screw compressors
Eighty-three machines up to 7.5 kW, 64 of them mounted directly on a 90 to 500 l tank — often with a dryer as well, as a “3-in-1” package. They suit a workshop or a smaller operation where a piston machine would be running all the time.
With an inverter
Two hundred and seven machines adjust their speed to demand, so they do not run idle and keep the pressure steady. You will find them among our screw compressors with an inverter.
With a dryer, and oil-free
Eighty-one machines have a built-in dryer, and 32 oil-free SCR units from 37 to 280 kW supply oil-free air for the food and pharmaceutical industries. Two hundred and thirty-three machines stand on a base frame without a tank, and the air tank is chosen to suit consumption.
Product ranges
SCR and ATMOS have the most machines — Albert, SMARTRONIC and SEC — followed by WALTER and ABAC Spinn. All the ranges, with a comparison, are together in our catalogue of screw compressors for continuous duty.
Screw or piston?
A screw machine pays off when you draw air for most of the shift. For short bursts with breaks in between, and for pressures above 13 bar, a piston machine is better — the differences are set out in our comparison of screw and piston compressors. You will find screw machines alongside piston and scroll ones in our overview of air compressors.
Frequently asked questions
- What is a rotary screw compressor?
- Simply the full name of the screw compressor, taken from its rotating, screw-shaped rotors. It is the same machine.
- Can a screw compressor run on 230 V?
- One can: the SPD-2,2/10CW-90 on a 90 l tank. All other screw machines need a three-phase 400 V supply.
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Black Wind piston compressors
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ATMOS piston compressors
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Walter reciprocating compressors
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Piston compressors ABAC
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Piston compressors ABAC
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Expert Zero compressors
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ABAC reciprocating compressors
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Quiet compressors Super Silent OS
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INDUSTRIAL TECH compressors
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CLR reciprocating compressors
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Combustion compressors
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Screw compressors
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Pressure vessels
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Compressor accessories
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Product sorting
List of products
The best output-to-input ratio in the range: 8 % more power than the 3 kW but 59 % more air. 510 l/min, same enclosure and weight.
Compressor, dryer and 200 l receiver on one frame in 0.82 m². The entry 3-in-1 package delivering 320 l/min, with no assembly certification needed.
Innovative and economical small screw compressor for up to 50% energy savings. Maximum output 950 l/min at 10 bar. Continuous speed control by inverter, direct 1:1 lossless...
The middle 4-in-1 package with a 270 litre receiver. A range of 800–1,500 l/min covers a plant with several draw-off points, and the air is class 2-4-2.
A 4-in-1 package with a 500 litre vessel. The same compressor as the 270 version but with nearly twice the air reserve — for plants with bursty demand.
The highest output in the range in the shorter package. Two thousand litres a minute, but only 1,517 mm long — for plants short of space in the compressor room.
The strongest 4-in-1 package with a 500 litre receiver. Compressor, vessel, refrigeration dryer and pre-filter on one frame — class 2-4-2 air without assembling components piece...
The smallest and quietest 4-in-1 package. Compressor, 270 l receiver, refrigeration dryer and pre-filter on one frame — a finished source of class 2-4-2 air at 66 dB(A).
The middle 8-in-1 package. To the 270 l receiver, dryer and pre-filter it adds a micro-filter, an activated-carbon filter and a condensate separator — the air exceeds class 1-4-1.
An 8-in-1 package with a 500 litre vessel. The cleanest air plus a large reserve — for plants that draw in bursts and cannot have oil in the air.
The top of the range. Highest output, largest vessel and the fullest equipment — two thousand litres a minute, 500 l of reserve and air that exceeds class 1-4-1.
Compressor, a 200 l receiver and a refrigerant dryer in one unit. Dry air with a +5 °C dew point right at the outlet, with nothing extra in the line. Output 498 l/min, noise 60...
The middle bare machine of the range. It controls from 800 to 1,500 l/min and takes a footprint of 900 × 820 mm. For plants that handle the receiver and air treatment centrally.
The strongest bare machine in the range. Two thousand litres a minute at peak, yet the same cabinet as the 11 kW — five kilowatts more without asking for a centimetre of extra...
The entry screw compressor of the range, without a receiver. 320 l/min at ten bar, 180 kg and a footprint of just 0.39 m² — for a workshop that already has a receiver.
The smallest and quietest machine in the range. It controls from 600 to 950 l/min at 66 dB(A) and takes up only 890 × 720 mm — four decibels less and a smaller footprint than...
A standalone 18.5 kW screw compressor delivering 2,590 l/min at 10 bar. It adds 375 litres per minute over the 15 kW and gives up 500 against the 22 kW — sitting exactly between...
The smallest in the SPINN Mini range and the cheapest way to leave a piston compressor behind in your workshop. The 2.2 kW motor delivers 294 l/min at 10 bar, that is 17.7 m³/h...
The choice for a workshop that has outgrown the entry model. The three-kilowatt motor delivers 366 l/min at 10 bar — a quarter more air than the SPM-2,2, yet the noise stays at...
The first model in the range that can handle tools drawing air continuously — grinders, sandblasting guns, longer blasting jobs. The four-kilowatt motor delivers 516 l/min at 10...
The most powerful machine in the SPINN Mini range: 780 l/min at 10 bar, which is 2.65 times the output of the entry model. It handles a spray gun and several workstations at...
The middle one of the three standalone units. It delivers 1,416 l/min at 10 bar, 420 l/min more than the 7.5 kW — and from the same 850 × 720 mm canopy. Noise 69 dB(A).
An eleven-kilowatt set with a 500-litre receiver and a refrigerant dryer. 1,416 l/min at 10 bar, 69 dB(A). Dry air for pipework serving several people at once.
The strongest standalone unit in the range. 1,680 l/min at 10 bar from a fifteen-kilowatt motor, noise 71 dB(A). The canopy stays 850 × 720 mm as on the weaker models.
The best-equipped set in the range. A fifteen-kilowatt compressor, a 500-litre receiver and a refrigerant dryer in one frame. 1,680 l/min at 10 bar, 71 dB(A), weight 300 kg.
The smallest complete set in the range: compressor, 270-litre receiver and refrigerant dryer in one frame. 696 l/min at 10 bar, 64 dB(A) — the quietest machine in the range. Dry...
Compressor, 500-litre receiver and refrigerant dryer in one unit. 996 l/min at 10 bar, 7.5 kW, 65 dB(A). Dry air and a reserve for peak demand without assembling a set.
Complete set for smaller operations with intermittent demand and dried air: compressor, tank, dryer and filters all in one unit. Housing 1,970 × 720 × 1,700 mm, weight 395 kg,...
Complete assembly for operation with multiple extraction points, where dried air and reserve capacity in the air tank are required. Dimensions 1,970 × 720 × 1,700 mm, G ¾″...
A complete setup for a workshop that wants dried and filtered air directly from the machine and doesn't want to assemble individual components. It weighs 382 kg, the connection...
Complete set for operation with higher consumption, where dried and filtered air is required directly from the machine. It weighs 421 kg, the connection is G ¾″ and the noise...
The smallest machine at the top equipment level. It turns down to 130 l/min and up to 320, yet does everything the larger assemblies do — two-stage filtration, automatic...
The middle machine at the top equipment level. A 200–510 l/min range covers a workshop with several stations, and adds two-stage filtration, automatic condensate drainage and a...
Complete assembly in a larger enclosure for medium-duty operation requiring dried air from a single unit. Dimensions 1,970 × 760 × 1,750 mm, weight 487 kg, connection G ¾″,...
The most powerful and at the same time the heaviest assembly of the SFTG KSP series, for operation with higher consumption of dried air. Housing 1,970 × 760 × 1,750 mm, G ¾″...
A complete fixed-speed assembly for continuous consumption of dry air. The dryer and filters are integrated in a single unit with the compressor and air tank. Dimensions 1,970 ×...
The most powerful assembly in the SKTG KSP range for operation with higher but constant consumption of dried air. Housing 1,970 × 725 × 1,750 mm, weight 487 kg, connection G ¾″,...
A complete set for laser cutting: machine, air tank, dryer and five filters in one unit. It weighs 510 kg, the cabinet measures 1,970 × 860 × 1,660 mm and the noise level is 62...
