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Pilot OFP4SI (5.5HP) Oil Free Industrial Silent

Enjoy 100% pure, oil-free air with the Pilot OFP4SI (5.5HP) Oil Free Industrial air compressor, with the economy and durability of a reciprocating system technology in a super quiet package. Pilot Air’s seal of quality ensures you can enjoy a long system service life.

485L/min free air delivery
4kW motor
68 d(B)A

Product Manual Brochure

Specifications

Model	Free Air Delivery		Motor Size		Max. Pressure		Cylinders	Noise Level	Dimensions	Weight
L/Min		CFM	KW	HP	KPA	(PSI)		d(B)A	L x W x H (mm)	kg
OFP2.2SI	285	10.1	2.2	3	800	116	2	60	820 x 660 x 1090	195
OFP4SI	485	17.1	4	5.5	800	116	2	68	850 x 730 x 1060	210
OFP5.5SI	730	25.8	5.5	7.5	800	116	3	67	930 x 750 x 1360	315
OFP7.5SI	885	31.2	7.5	10	800	116	3	67	930 x 750 x 1380	330
OFP11SI	1320	46.6	11	15	800	116	4	75	1000 x 970 x 1270	365

Performance measured to JIS B8341
Technical data conforms to +/- 5%. Pilot Air reserves the right to modification without notice for design and technical improvements.
Warranty: 1 year on complete unit.
For over 40 years Pilot Air Compressors has been meeting the needs of industry. Ask us about your requirements.

The Pilot OFP4SI (5.5HP) Oil Free Industrial pump features an oil-less design with one-piece sealed bearing conrods, special PTFE compression rings, heat insulated piston pin bushings and specially anodised cylinder coatings. A high efficiency cooling system and integral aftercooler make it suitable for heavy duty use. Air meets ISO 8573-1:2010 Part 1 for oil content, while the super silenced cabinet design with acoustic foam-lined panels offers quiet functioning and the energy efficient MEPS approved motors minimises energy costs. Custom-built compressors available to meet your specific requirements.

Air Compressor Products

From air compressors through to compressed air storage, treatment and distribution, our extensive range of compressed air products ensures we have the right solution for your business needs, no matter the industry or application. We also offer custom-built packages and compressed air systems that are fit for purpose and tailored to your budget.

Frequently asked questions

What features make the OFP4SI ideal for harsh Australian environments?

The OFP4SI Oil-Free Industrial Silent compressor is built with oil-less design, PTFE compression rings, heat-insulated piston pin bushings, anodised cylinders, and a high-efficiency cooling system with aftercooler, making it durable in hot, dusty, and continuous-use conditions.

How quiet is it — can it be used in Sydney workshops or other urban settings without causing noise issues?

Yes. The OFP4SI operates at around 68 dB(A) thanks to its super-silenced cabinet and acoustic foam-lined panels, making it suitable for workshops, factories, and light industrial sites in Sydney and other urban areas.

What performance specs can I expect, and will it meet industrial demands in NSW / VIC etc.?

With a 4 kW (5.5 HP) motor, the OFP4SI delivers approximately 485 L/min free air, runs up to 800 kPa (116 psi), and weighs about 210 kg — ensuring it meets demanding industrial applications across Australia.

How reliable is Pilot Air when it comes to service, spare parts, and support in Sydney / Australia?

Pilot Air provides local support through its Sydney head office and manufacturing base in Silverwater, along with a dedicated service and spares division in Auburn, giving businesses quick access to parts and trusted service across NSW and nationwide.

What warranty, standards, or certifications does the OFP4SI have?

The OFP4SI comes with a 1-year warranty, is ISO 8573-1:2010 compliant for oil content in compressed air, and features MEPS-approved motors for energy efficiency and compliance.

Our Reviews

We have a growing manufacturing business and our air supply needed to be upgraded to deliver to a clean volume of air to specific machines and mainly our spray booth. 3 Months ago the team at Pilot Air evaluated our requirement and delivered an excellent solution, we have had time to run the system for a considerable time and found it to be excellent. Also Australian Manufactured to boot. Very Happy.

Brett

My husband recently bought a second hand Trademaster 12 air compressor in need of some maintenance. He took it to the Silverwater servicing centre with no prior arrangement. The staff were polite, obliging, and eager to help, and he was impressed with the service provided. Well done Pilot Air!

Donna Slater

I would just like to thank Debbie and the team at Pilot Air Compressors Service Department for a great job done this morning.
Excellent job done, Great Staff & Great Service
Thank you Debbie & the team at Pilot Air Compressors…
Geoff Bryce
Bryce Pest Control Pty Ltd.

Geoff Bryce

Thanks Pilot Air! We have just purchased our third pilot compressor (K50). Our oldest one (K25) is 14 years old and still going strong, used all day every day only replaced pressure switch.

Michael Mourad

The Compressed Air Experts

1300 667 579

NSW
Head Office & Manufacturing
115 Beaconsfield Street,
Silverwater, Sydney NSW 2128

Service and Spares Division
21-25 Stubbs Street,
Auburn, Sydney NSW 2144

Contact Pilot Air

Get in touch to see how we can help you find the right compressed air solution.

VIC Branch | Ph: 1300 667 579

QLD Branch | Ph: 07 3279 1213

WA Branch | Ph: 08 9424 2800

SA Branch | Ph: 1300 667 579