Screw Compressors

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Screw Compressors

23 used machines found

Top brand screw compressors with low maintenance needs

Although screw compressors have some construction advantages compared with the widespread piston compressors, its market share in the industry increases slowly. One of these advantages: screw compressors have few mobile parts, this is why they have low maintenance needs. Besides, they are really quiet and efficient. Screw compressors are rotary compressors, whose helicoidal rotors gradually decrease the compression chamber and continuously compress the intake gas (e. g. air). At Surplex you will find used screw compressors from leading manufacturers such as KAESER, ATLAS COPCO, BOGE and DEMAG. There are also modern models with few operating hours among them!

Top offers: Screw Compressors

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Air pressure system with compressors, air dryer and boiler
Ort im Innkreis
0 Bids
3,500 €
05/09/2018 10:22
Top lot
ATLAS COPCO GA 22 VSD-P Screw Compressor
Aichach
0 Bids
2,800 €
30/08/2018 10:28
BETICO ER 132 Screw Compressor
San Pedro de B…
0 Bids
2,800 €
Not started
KAESER ASK 27 Screw Compressor
Aichach
0 Bids
2,600 €
30/08/2018 10:40
Hot lot
ATLAS COPCO GA 75 P Screw Compressor
ATLAS COPCO GA 75 P Screw Compressor
Waldmohr
17 Bids
1,800 €
12/09/2018 11:06
Opportunity
KAESER SX6-TAH6-280 Screw Compressor
Lauda-Königsho…
0 Bids
1,800 €
15/08/2018 11:02
Hot lot
AT GA 75 VSD Screw Compressor
Waldmohr
18 Bids
1,600 €
12/09/2018 14:01
Hot lot
ATLAS COPCO GA 55 P Screw Compressor
Waldmohr
15 Bids
1,600 €
12/09/2018 13:50
CECCATO CSC 40/8 Screw Compressor with Dryer + CDX 65 and Tank
Budoni (SS)
0 Bids
1,500 €
13/09/2018 10:22
Hot lot
ATLAS COPCO GA 75 P Screw Compressor
Waldmohr
14 Bids
1,500 €
12/09/2018 11:04
KAESER SKT 24 T Screw Compressor
Alcover
3 Bids
1,400 €
12/09/2018 12:24
Hot lot
ATLAS COPCO GA 55 Screw Compressor
Waldmohr
17 Bids
1,110 €
12/09/2018 13:51
INGERSOL-RAND SSR ML 15 Screw Compressor
Cerea (VR)
0 Bids
1,100 €
17/09/2018 10:59
INGERSOL-RAND OP 5-11 P-10 Screw Compressor
Mülheim an der…
0 Bids
990 €
25/09/2018 10:21
MARK RF 20 + 725 Rotary-Screw Compressor
Montelabbate (PU)
0 Bids
890 €
17/09/2018 11:48
Hot lot
ATLAS COPCO GA 75 Screw Compressor
Waldmohr
22 Bids
850 €
12/09/2018 13:59
ATLAS COPCO GA 75 P Screw Compressor
ATLAS COPCO GA 75 P Screw Compressor
Waldmohr
1 Bid
650 €
12/09/2018 14:00
ATLAS COPCO GX7 Screw Compressor
Heede (ems)
4 Bids
650 €
30/08/2018 10:04
DAUMANN K 30 Screw Compressor
Essen
0 Bids
600 €
04/09/2018 14:49
CECCATO RL 50 10 Screw Compressor
Xátiva
4 Bids
510 €
07/09/2018 10:44
CECCATO RL 50 10 Screw Compressor
Xátiva
4 Bids
300 €
07/09/2018 10:45
KAESER SM 11 Screw Compressor
Witten
1 Bid
250 €
13/09/2018 10:08
MAHLE MSK-I Screw Compressor
Herzberg am Harz
3 Bids
170 €
15/08/2018 11:00
 

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Index

  1. Tasks and functionality of a screw compressor
  2. Why use screw compressors?
  3. Uses for screw compressors
  4. Suppliers of screw compressors

Tasks and functionality of a screw compressor

Compressors are machines that compress gas to such an extent, that it can be efficiently stored and used for specific technical purposes. Compressors are most commonly used for blasting and lacquering. The most common configuration of a compressor is the reciprocating piston. Here a mechanism containing a crankshaft, connecting rod, spools and cylinders is powered by an electric motor. For lacquering and blasting, gas and the surrounding air is sucked into a container, where the pressure then rises continuously until it is used again. Therefore, compressors are usually used for refrigeration units.

Why use screw compressors?

  • It is used for specific technical purposes
  • They are used for refrigeration units
  • The most common configuration is the reciprocating piston
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It is important to ensure that the spool does not rub against the wall of the cylinder as the frictional force increases the warming up of the compressor. A reciprocating compressor is much more expensive in regards to maintenance and energy usage. Compressed air is a form of energy that is essential in all modern industry facilities. Whether it is for pneumatically operated machines or compressed air cleaning guns, a compressed air tube and compressor are necessary in almost all industrial facilities. Contrary to the reciprocating compressor, screw compressors only have two movable parts. The screws are complexly formed workpieces that move against and into one another.
Used screw compressor 02
Through this movement, they transport the in-coming gas from one side of the screw to the other. Thereby, the space in between the screws becomes continually smaller, resulting in the compression of the in-coming gas. Screw compressors work significantly more quietly and efficiently than reciprocating compressors. At the same time, they require a higher minimum speed and have specifically designed components.

Uses for screw compressors

Screw compressors are used for the production of compressed air and gas, as well as being used in refrigerator units. They are a little bit more expensive than reciprocating compressors in terms of their manufacturing, but they require less energy for continuous operation and do not need as much maintenance. As a result of the energy policies, the compressor has a new role in regards to the saving of mechanical energy. Therefore, it is expected that the innovation of compressor technology will increase in the near future.
Used screw compressor 03
Screw compressors are not as widely available as reciprocator compressors and they are not yet commonly used in small refrigerator units or freezers. In the industrial context, screw compressors make up about 50% of compressors.

Suppliers of screw compressors

The most well-known manufacturers of screw compressors are: ATLAS COPCO, KAESER, BOGE, OCHSNER BAUER, DEMAG, INGERSOLL, MAHLE and ECOAIR.

Used screw compressor 04
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