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Continuous-Duty Industrial Compressed Air

Rotary Screw Air Compressors

Explore fixed-speed and variable-speed rotary screw compressor ranges for workshops, engineering sites, manufacturing and high-demand industrial compressed-air systems.

Browse Compressor Ranges Call 0121 753 3330
Fixed Speed
Variable Speed
Receiver Mounted
Dryer Packages
Continuous Duty

Industrial Rotary Screw Compressors from Compact Workshop Systems to High-Output Plant

Rotary screw compressors are designed for regular and continuous compressed-air demand. The right machine should be selected from the airflow your site genuinely needs, working pressure, daily running hours, demand variation, electrical supply, ventilation and air-treatment requirements.

Use the range cards below to go directly to the relevant compressor family rather than browsing by brand alone.

Trading Since 1992
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Browse the Main Rotary Screw Compressor Ranges

Choose the route that best matches the size and type of system you are looking for.

FINI industrial rotary screw compressors
FINI Industrial Screw Compressors 2.2-75 kW · 8.5-431 CFM
Compact, floor-mounted, receiver-mounted, dryer and variable-speed options. View FINI Range →
Power Systems industrial rotary screw compressors
Power Systems Industrial Screw Compressors 2.2-90 kW · approx. 7-562 CFM
G-TEC, NOBEL and other industrial configurations for larger production demand. View Power Systems Range →
Nuair compact rotary screw compressors
Nuair Screw Compressors 2.2-7.5 kW · 9.2-37.1 CFM
Compact screw compressor packages for workshops, garages and lighter industrial use. View Nuair Range →
Tanair permanent magnet variable speed screw compressors
Tanair VSD Screw Compressors 5.5-22 kW · 19-112 CFM
Direct-drive permanent-magnet VSD compressors for suitable variable-demand applications. View Tanair VSD →
Looking specifically for rotary vane technology? Rotary vane compressors are treated as a separate technical route on the site. View the dedicated Hydrovane-focused rotary vane page rather than mixing vane and screw ranges together.
Rotary Vane Compressors

Fixed Speed or Variable Speed?

The choice should follow the site's real demand profile rather than the label on the compressor. A correctly sized fixed-speed machine can be the better option where demand is steady, while VSD is strongest where demand genuinely rises and falls.

TypeTypically Best Suited ToKey Consideration
Fixed SpeedRelatively steady and predictable air demand.Correct sizing helps reduce unnecessary unloaded running.
Variable SpeedSites where demand changes significantly during the working day.Check minimum demand, load profile, pressure and annual running hours.
Receiver MountedSites wanting the compressor and local air storage in one package.Confirm receiver size, dimensions, access and electrical supply.
Receiver + DryerCompact installations where moisture reduction is also required.Confirm dryer capacity and required downstream air quality.
For the dedicated Tanair permanent-magnet variable-speed range, go directly to Tanair Variable Speed Air Compressors.

How to Size a Rotary Screw Compressor

Delivered AirflowAdd the CFM demand of equipment that may operate together and allow sensible capacity for leakage and future growth.
Working PressureChoose the lowest pressure that reliably supports the process after genuine losses through treatment and pipework.
Operating HoursDaily and annual runtime influence compressor type, controls, service intervals and whole-life cost.
Demand VariationUnderstand how air use changes through the day before deciding whether VSD is justified.
Electrical SupplyConfirm voltage, phase, local isolation and protective devices before ordering.
Air TreatmentReceiver, dryer and filtration should be selected around flow, pressure, ambient conditions and required air quality.

Floor Mounted, Receiver Mounted or Full Package?

Floor MountedBest where a suitable receiver and air-treatment system already exist or will be selected separately.
Receiver MountedCombines the compressor and air storage in one compact package for simpler workshop installation.
Receiver + DryerCombines compression, local storage and refrigerated drying where a more complete package is preferred.
Floor Mounted + DryerUseful where a separate receiver exists but an integrated refrigerated dryer is preferred.
Full FeatureSelected packages may combine compressor, receiver, dryer and filtration to simplify the complete station.
Compact Workshop ScrewSmaller packages can replace piston compressors where lower noise and longer daily duty are priorities.

Installation Requirements That Matter

VentilationRotary screw compressors reject significant heat and need adequate cooling airflow around the cabinet.
Service AccessLeave suitable clearance for filters, separator elements, lubricant, belts and cooler cleaning.
Receiver CapacityReceiver sizing should reflect demand pattern, controls and any short-duration peak loads.
Dryer & FiltrationSpecify treatment around the required pressure dew point and downstream air-quality requirement.
Condensate ManagementReceivers, filters and dryers produce condensate that must be drained and managed correctly.
PipeworkCorrect pipe diameter and layout help minimise pressure drop and leave capacity for future expansion.

Rotary Screw or Piston Compressor?

Choose Rotary Screw WhenThe compressor will run for longer periods, air demand is regular, lower noise is important or the site needs dependable industrial compressed air throughout the working day.
Choose Piston WhenAir use is intermittent, daily runtime is lower or a smaller workshop needs a simpler compressor that will spend significant periods switched off.
Compare Piston Compressors

Reducing Compressed-Air Running Costs

Correct SizingSelect from real site demand rather than motor kW alone.
Pressure OptimisationOperate at the lowest practical system pressure that still supports the process reliably.
Leak ReductionLeaks create avoidable demand and increase compressor running hours.
Demand ControlSequencing and control improvements can help where more than one compressor serves the same system.
VSD Where It FitsVariable-speed control can reduce waste where demand changes significantly.
Planned MaintenanceClean coolers, serviceable filters and correct pressure settings support reliable, efficient operation.
Energy Saving Audits ROI Calculator

Installation, Service & Aftercare

InstallationsCompressor and compressed-air pipework installation support. ServicingPlanned maintenance based on machine requirements and running hours. 24/7 BreakdownEmergency engineering assistance for compressor failures. Technical AdviceHelp selecting, replacing or reviewing an industrial compressor system.

Rotary Screw Compressor FAQs

What are rotary screw compressors best suited to?

They are generally best suited to regular or continuous compressed-air demand in workshops, manufacturing, engineering, automotive and other industrial applications.

What is the difference between fixed speed and VSD?

A fixed-speed compressor operates at a constant motor speed, while a variable-speed compressor adjusts motor speed to follow changing demand. Which is better depends on the actual site load profile.

Where is the Tanair VSD compressor range?

The dedicated range is on the Tanair Variable Speed Air Compressors page, covering 5.5, 7.5, 11 and 22 kW models.

Do I need an air receiver?

Many systems benefit from an air receiver to provide storage, stabilise pressure and support compressor control. Some machines are supplied receiver mounted while larger floor-mounted systems usually use a separate receiver.

Do I need a refrigerated dryer?

That depends on the air-quality requirement. Refrigerated dryers are commonly used to reduce moisture in general industrial systems, while more demanding processes may require different treatment.

What if I specifically need a rotary vane compressor?

Use the dedicated Rotary Vane Air Compressors page, which covers the Hydrovane route separately from the rotary screw ranges.

Can Compressed Air Systems UK help with sizing and installation?

Yes. We can review airflow, pressure, operating hours, demand variation, electrical supply, receiver capacity, air treatment, pipework and installation requirements.

Need Help Choosing the Right Rotary Screw Compressor?

Send us your required CFM, working pressure, daily operating hours, existing compressor details and whether demand is steady or variable.

Request Compressor Advice Call 0121 753 3330

Industries We Support

Energy, Process & Heavy Industry
Food & Beverage
Automotive & Transport
Manufacturing & Engineering
And many more — talk to us for help sizing the right solution for your application.

Support & Aftercare

12 Month WarrantyFull peace of mind guaranteed on all workshop compressors.
UK installation availableProfessional on-site setup by our experienced technicians.
Full Aftermarket SupportComprehensive spares and repairs always ready to go.
UK Based SupportLocal experts just a phone call away for any assistance.
Genuine Service PartsOnly original, high-quality service parts for your machine.
Expert Air AdviceLeverage our 30+ years of technical compressed air knowledge.

Our Expert Services

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Rapid response for all air compressor malfunctions, anytime you need us.

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INSTALLATIONS

Expert design and bespoke pipework installations tailored to your site.

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SERVICING

Comprehensive maintenance to keep your air systems running at peak performance.

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