Screw Compressors

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Screw Compressors

TIGREN DD 4kW 270ltr Screw Compressor

£1,883.99 incl VAT£1,569.99 excl VAT

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Screw Compressors

Mercury Mech 4.0-08-200 Screw Compressor [SIP 05372]

£4,079.99 incl VAT£3,399.99 excl VAT

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Screw Compressors

SIP Mercury Mech 4.0-10-200 Screw Compressor [SIP 05374]

£4,079.99 incl VAT£3,399.99 excl VAT

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Screw Compressors

Airmate Mercury Tronic 5.5-10-270 Screw Compressor [SIP 06201]

£4,199.99 incl VAT£3,499.99 excl VAT

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Screw Compressors

SIP Mercury Tronic 5.5-08-270 Screw Compressor [SIP 05376]

£4,199.99 incl VAT£3,499.99 excl VAT

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Screw Compressors

SIP Sirio 08-08-270 Screw Compressor [SIP 06275]

£4,859.99 incl VAT£4,049.99 excl VAT

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Screw Compressors

SIP Sirio 08-10-270 Screw Compressor [SIP 06285]

£4,859.99 incl VAT£4,049.99 excl VAT

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Screw Compressors

SIP Sirio 11-10-270 Screw Compressor [SIP 06410]

£5,279.99 incl VAT£4,399.99 excl VAT

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Screw Compressors

SIP Sirio 08-10-500 Screw Compressor [SIP 06287]

£5,327.99 incl VAT£4,439.99 excl VAT

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Screw Compressors

SIP Sirio 11-10-500 Screw Compressor [SIP 06200]

£5,459.99 incl VAT£4,549.99 excl VAT

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Screw Compressors

SIP Sirio 15-10-500 Screw Compressor [SIP 06269]

£5,879.99 incl VAT£4,899.99 excl VAT

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Screw Compressors Explored

Modern high-volume automotive centres, multi-bay tyre fitting workshops, and fast-fit garages require an uninterrupted supply of clean, high-pressure air to keep service lines moving.

Unlike intermittent workshop setups, industrial operations demand constant pneumatic power that will not drop in line pressure during peak operational periods.

Rotary screw air compressors represent the pinnacle of compressed air engineering, offering continuous 100 percent duty cycles, outstanding energy efficiency, and remarkably quiet running.

You can discover our heavy-duty, commercial-grade systems designed for rigorous industrial use across our full range of screw compressors.

Investing in rotary screw technology eliminates workshop bottlenecks, ensuring that every tyre changer, air gun, and vehicle lift operates with maximum performance.

How does continuous 100 percent duty cycle operation benefit busy workshops?

Traditional piston compressors are mechanically limited to intermittent duty cycles, meaning they must spend substantial time resting to prevent thermal overheating.

If a piston unit runs constantly above its intended duty rating, internal friction rapidly destroys pump seals and carbonises lubricating oil.

Rotary screw air compressors are engineered specifically for continuous, round-the-clock operation without requiring cooling rests between cycles.

Twin precision-machined helical rotors mesh smoothly inside an oil-flooded chamber, compressing intake air continuously in an axial direction.

This design prevents mechanical contact between the screws, eliminating the wear points and friction spikes common in reciprocating piston units.

Your workshop enjoys constant, unyielding air delivery from the first morning job to the final evening service.

Why are rotary screw compressors significantly quieter than piston alternatives?

Excessive ambient noise in a busy tyre bay causes technician fatigue, hampers communication, and poses long-term risks to auditory health.

Reciprocating compressors create intense low-frequency thumping through piston slap, rapid valve actuation, and structural vibration.

In contrast, rotary screw compressors operate with a smooth, continuous rotary motion that generates minimal mechanical vibration.

Furthermore, modern industrial screw units are housed within fully enclosed, acoustically insulated steel cabinets lined with sound-dampening foam.

This enclosed design reduces operating noise levels down to between 60 dB(A) and 68 dB(A).

As a result, these compressors can be positioned directly on the workshop floor adjacent to technicians without violating workplace noise safety guidelines.

How does internal oil injection protect the rotary air end?

The precision-engineered compression module, known as the air end, relies on high-grade synthetic oil injected directly into the rotor profile.

This specialised fluid performs three vital functions simultaneously: dynamic sealing, continuous cooling, and component lubrication.

The oil creates an airtight hydraulic film between the intermeshing male and female rotor lobes, preventing compressed air from slipping back to the intake.

It also absorbs the heat of compression immediately at the point of generation, keeping operating temperatures remarkably low and stable.

Finally, the oil lubricates the heavy-duty roller and thrust bearings supporting the rotor shafts under intense axial loads.

Downstream cyclonic air-oil separators extract this fluid efficiently, returning ultra-clean air into the receiver tank whilst circulating the cooled oil back to the air end.

How to Choose the Perfect Screw Compressor

Selecting the ideal screw compressor requires a thorough evaluation of your workshop's total pneumatic consumption and electrical capacity.

Because screw compressors thrive when running at steady operational temperatures, correctly sizing the unit to your actual demand is essential for preventing oil condensation.

So what should you consider here?

Begin by auditing the combined Free Air Delivery (FAD) requirements of all pneumatic machinery operating across your workshop bays.

Unlike small workshops with intermittent usage, multi-bay facilities require a high baseline CFM output to feed several technicians at the same moment.

For instance...

A four-bay tyre centre running two commercial bead-assist changers, continuous wheel-balancing lifters, and multiple 3/4-inch impact wrenches requires at least 25 to 45 CFM of usable air.

Next, evaluate the available electrical infrastructure on your premises.

Most commercial rotary screw compressors feature powerful motors ranging from 4.0 kW (5.5 HP) up to 11 kW (15 HP) or higher, which demand a stable three-phase 400V electrical connection.

Finally, consider whether you require an all-in-one receiver-mounted package with integrated refrigerant air dryers or a standalone modular system.

Variations & Types

Floor-Mounted vs Receiver-Mounted Screw Compressor Systems

The spatial layout of your plant room or workshop floor determines whether an integrated or separate storage configuration is best.

Receiver-mounted screw compressors position the motor, air end, and control cabinet directly on top of a heavy-gauge 200-litre or 270-litre horizontal air vessel.

This compact all-in-one footprint saves valuable floor space, simplifies installation, and keeps interconnecting pipe runs extremely short.

Standalone floor-mounted units are designed to sit independently and connect directly into large external vertical air receivers or centralised ring mains.

Floor units are favoured by extensive industrial facilities that already have dedicated central air storage tanks and distribution pipework in place.

Fixed-Speed vs Variable-Speed Drive (VSD) Compressors

Electric motor control technology significantly influences both capital expenditure and daily electricity running costs.

Fixed-speed screw compressors run their electric motors at a constant velocity, utilising load/unload valve regulation to manage air pressure.

These units offer outstanding reliability and lower upfront purchase costs for workshops with steady, predictable air consumption throughout the working day.

Variable-Speed Drive (VSD) compressors incorporate an advanced electronic inverter that adjusts motor speed in real time to match exact air demand.

When air demand drops, the inverter slows down the motor smoothly, preventing costly electrical peak surges and slashing overall energy consumption by up to 35 percent.

VSD technology is the ideal solution for large commercial fast-fit centres experiencing fluctuating air usage across different shifts.

Integrated Refrigeration Dryer Packages

Moisture control is vital when supplying modern pneumatic machinery and electronic wheel servicing equipment.

Integrated dryer systems combine the screw compressor, horizontal receiver tank, and a high-efficiency refrigerated air dryer into a single plug-and-play unit.

The onboard dryer cools the compressed air down to a pressure dew point of +3 degrees Celsius, forcing water vapour to condense out before it reaches the workshop line.

This ensures bone-dry air delivery, preventing internal corrosion inside pneumatic valve blocks and protecting vehicle TPMS sensors during inflation.

Workshops with limited space benefit greatly from having full air generation, storage, and purification contained within one neat housing.

Specialist Considerations

Air Flow Demand Across Multi-Bay Tyre Facilities

Underestimating cumulative workshop air consumption leads to pressure drops that disrupt automated machinery.

Evaluating continuous versus intermittent air draw across your workshop prevents unexpected workflow pauses:

• Heavy-duty commercial tyre changers with pneumatic assist arms require 10 to 15 CFM during intensive bead demounting.
• High-torque 1/2-inch and 3/4-inch pneumatic impact guns draw 6 to 12 CFM during wheel removal.
• Continuous pneumatic tools, including high-speed tyre buffers and die grinders, demand a steady 12 to 18 CFM without interruption.
• Pneumatic commercial vehicle lifts and pit jacks require substantial instantaneous volume during lifting cycles.

A properly sized screw compressor maintains constant line pressure regardless of how many bays are operating simultaneously.

Advanced Electronic Controllers and Diagnostic Telemetry

Modern screw compressors feature sophisticated micro-processor control units that monitor operational health continuously.

Digital control panels track critical parameters, including working pressure, discharge air temperature, oil separator pressure drop, and total running hours.

These smart controllers provide automatic maintenance reminders for air filters, oil filters, and separator cartridges, preventing overdue servicing.

Safety shutdown protocols protect the machine instantly in the event of phase reversal, motor overload, or excessive operating temperatures.

Many units also feature programmable weekly timers, allowing the compressor to power down automatically outside of workshop trading hours to save energy.

Thermal Dissipation and Ventilation Planning

Although rotary screw compressors run significantly cooler than piston units, continuous 100 percent duty cycles still generate substantial radiant heat.

Installing a screw compressor inside a small, unventilated plant room will cause ambient temperatures to rise rapidly.

High ambient heat reduces cooling efficiency across the combined air-oil radiator pack, triggering thermal safety cut-outs.

Adequate low-level fresh air intake louvres and dedicated high-level warm air extraction ducting must be planned during installation.

Maintaining ambient plant room temperatures between 5 and 40 degrees Celsius ensures optimum oil viscosity and peak thermal balance.

Quality & Brand Selection

Investing in industrial screw compressor machinery from proven engineering brands guarantees exceptional reliability, lower total cost of ownership, and straightforward parts availability.

Market-leading manufacturers such as SIP, Airmate, and Tigren design heavy-duty screw compressors tailored specifically for demanding automotive workshops.

Their systems feature precision-ground steel rotors, oversized aluminium cooling radiators, and heavy-duty electric motors engineered to deliver tens of thousands of operating hours.

Premium European air ends ensure maximum volumetric efficiency with minimal power consumption across every kilowatt of energy used.

Furthermore, certified air receivers conform strictly to UKCA and CE pressure vessel standards, ensuring total operational safety for your business.

Explore our complete lineup of professional workshop machinery in our screw compressors category to give your garage the reliable power it deserves.