Screw Compressors Oil-free double-stage Screw Compressor
Series DS

The double-stage air compressors of the DS series compress absolutely oil-free in accordance with ISO 8573-1, class 0 and guarantee outstanding performance in almost all application areas at differential pressures between 5.5 and 10.5 bar. A compact plug-and-play solution for your processes - not just for sensitive scopes of application.

Volume flow:
180 to 2.920 m³/h

Differential pressure (Δp):
5.500 to 10.500 mbar

Medium:
Air, Neutral Gases

Compression:
Oil-free

The advantages of AERZEN Screw Compressor Series DS at a glance:

Increased energy efficiency ensures additional savings of up to 12%
Large volume flow control range thanks to reliable VFD technology
Compact design leads to a very small footprint
Maximum reliability and durability
Safe use in extreme ambient conditions
Plug & Play also in connection with outdoor installation and efficient IE5 motors
Minimum sound pressure levels
Reduced service costs thanks to extended maintenance intervals
On-site service on compressor stages and on the package

As diverse as your applications

Compressed air is omnipresent in industry and has become indispensable in many applications - be it in chemical/ petrochemical process technology, electronics and semiconductor production, the food and beverage industry, the textile industry, medical technology and many other areas.

US Units

Type of technology: Screw Compressors
Design: Positive pressure
Differential pressure (Δp): 5.500 to 10.500 mbar
Volume flow: 180 to 2.920 m³/h
Medium: Air, Neutral Gases
Compression: Oil-free

Exceptionally high energy efficiency

Energy savings of up to 12 % compared to other compressor models
Innovative bare-shaft compressors with new, highly efficient 4+6 rotor profiles in the low and high-pressure ranges
Large turndown due to the use of VFD technology
Optimised cooling by using cooling liquid (water or oil) in the double-walled bare-shaft stages
Motors of energy efficiency class IE4 or IE5; in connection with an integrated VFD
Direct drive by means of coupling and gear transmission for optimum drive efficiency
Stainless steel rotors in both stages to prevent corrosion

High reliability and durability

100 % oil-free process air for sensitive applications, certified according to ISO 8573-1 Class 0
PFAS-free process air generation
Effective sealing concept for drive shaft and conveying chamber; minimisation of natural seal wear
Extended fields of application: options for using the package in hot, dusty (desert installation) or extremely cold (polar regions) climates.
Oil pressure lubrication for exceptional durability of the anti-friction bearings. Bearing life of up to 40,000 hours
Permanent oil level check by means of an electrical oil pressure switch
Reliable even in extreme climatic conditions thanks to the use of an oil cooler already included in the standard scope of supply
Optional acoustic hood for outdoor installation. Enables the machine with integrated VFD to be used outdoors even under direct weather conditions
Highly effective water separators ensure that condensate is drained as required

Reduced maintenance effort

Operation and maintenance exclusively from the operating and rear side of the package
Small footprint and side-by-side installation possible
On-site service on the compressor stages and the package
Effortless transport of the entire package using a pallet truck, fork lift truck or crane
No maintenance required for drivetrain components
Delivery of the package with a filled oil system enables quick commissioning

Smart oil system

Mechanically driven oil pump on the drive shaft
Highly efficient oil pump with reduced energy consumption
Oil-lubricated anti-friction bearings with pressure lubrication achieve a service life of up to 40,000 hours

Permanently, intelligently reduced noise levels

Minimum sound pressure levels thanks to intelligent noise reduction of the package
Innovative pulsation reduction thanks to the use of Venturi nozzles downstream of both compressor stages

Compressed air screw compressor DS series - double-stage, oil-free

The double-stage air compressors in the DS series compress absolutely oil-free in accordance with ISO 8573-1, class 0. Outstanding performance in almost all application areas with differential pressures between 5,5 and 10.5 bar. Compact plug-andplay solution for drive power from 55 - 315 kW.

Oil-free double-stage Screw Compressor
Series DS — Performances & dimensions

Positive pressure
Series	Performance data			Dimensions and weights
Series	Pressure difference, mbar	Volume flow*, m³/h	Motor power, kw	Width (W), mm	Depth (D), mm	Height (H), mm	Weight, kg
DS 55 A/W** \| 8 bar	8,000	475	55	1,400	2,500	2,000	3,060
DS 55 A/W** \| 10 bar	10,000	397	55	1,400	2,500	2,000	3,060
DS 75 A/W** \| 8 bar	8,000	719	75	1,600	2,800	2,000	3,270
DS 75 A/W** \| 10 bar	10,000	587	75	1,600	2,800	2,000	3,270
DS 90 A/W** \| 8 bar	8,000	804	90	2,200	2,800	2,000	3,370
DS 90 A/W** \| 10 bar	10,000	648	90	2,200	2,800	2,000	3,370
DS 110 A/W** \| 8 bar	8,000	1,079	110	2,200	3,300	2,000	4,080
DS 110 A/W** \| 10 bar	10,000	943	110	2,200	3,300	2,000	4,080
DS 132 A/W** \| 8 bar	8,000	1,273	132	2,100	3,400	2,400	4,680
DS 132 A/W** \| 10 bar	10,000	1,143	132	2,100	3,400	2,400	4,680
DS 160 A/W** \| 8 bar	8,000	1,542	160	2,200	4,000	2,200	5,000
DS 160 A/W** \| 10 bar	10,000	1,350	160	2,200	4,000	2,200	5,000
DS 200 A/W** \| 8 bar	8,000	2,056	200	2,000	4,000	2,600	5,200
DS 200 A/W** \| 10 bar	10,000	1,714	200	2,000	4,000	2,600	5,200
DS 250 A/W** \| 8 bar	8,000	2,447	250	2,000	4,000	2,600	5,450
DS 250 A/W** \| 10 bar	10,000	2,195	250	2,000	4,000	2,600	5,450
DS 315 A/W** \| 8 bar	8,000	2,920	315	2,000	4,000	2,600	5,650
DS 315 A/W** \| 10 bar	10,000	2,663	315	2,000	4,000	2,600	5,650

Sound pressure level without blow-off noise, with acoustic enclosure.
* corresponds to the measured delivery volume flow converted to the customer-specific suction conditions p = 1,0 bar, t =20°C, rF = 0%
**Cooling: A: air-cooled and W: water-cooled