Introducing the UNIMAC ACM 500s Quiet Air series double twin cylinder Air Compressor! This is a trade quality 4 Cylinder unit ideal for anyone looking for the performance and reliability that only an oilless electric air compressor can provide. DUAL MOTOR The ACM 500s has 2 twin cylinder motors. With UNIMAC Electronic APC the motorsand#8217; output is equalised. That means the motors run at maximum efficiency for fast air tank filling. ULTRA QUIET This Unimac Quiet Air Series is engineered to be just that. Whisper Vortex cooling fans Hush Baffle air intakes and vulcanised rubber motor mounts and rubber tyres combine to give this an Lpa of only 64 dBa and#8212; thatand#8217;s nearly library quiet! CLASS LEADING POWER This ACM 500s Oil Free Air Compressor is powered by 2 twin cylinder 1.1kw motors which is equivalent to a total output of 3.0HPand#8212; up to 40% more than other models on the market! BIG 50L TANK With its 50L tank it is capable of delivering a continuous 200 litres per minute air supply for a huge variety of applications. SERVICE FREE DESIGN Unlike petrol and other belt driven models on the market with this oil free electric model you donand#8217;t have to worry about engine maintenance or replacing belts or pulleys. TWO NITTO OUTLETS The two quick connect outlets let you use a wide array of tools including grinders impact wrenches welders nail guns grease guns chisels and more. It also has automatic on off pressure control. EASY TO USE The precise easy to read tank pressure and line pressure gauges take the guesswork out of filling and using your air compressor. Its extended handle makes it a breeze to move. It also has a grab handle for ease of manoeuvring in tighter spaces. It's safe to say the UNIMAC ACM 500s silent air compressor blows the competition away! Specification Brand: Un
Introducing the UNIMAC ACM 500s Quiet Air series double twin cylinder Air Compressor! This is a trade quality 4 Cylinder unit ideal for anyone looking for the performance and reliability that only an oilless electric air compressor can provide. DUAL MOTOR The ACM 500s has 2 twin cylinder motors. With UNIMAC Electronic APC the motorsand#8217; output is equalised. That means the motors run at maximum efficiency for fast air tank filling. ULTRA QUIET This Unimac Quiet Air Series is engineered to be just that. Whisper Vortex cooling fans Hush Baffle air intakes and vulcanised rubber motor mounts and rubber tyres combine to give this an Lpa of only 64 dBa and#8212; thatand#8217;s nearly library quiet! CLASS LEADING POWER This ACM 500s Oil Free Air Compressor is powered by 2 twin cylinder 1.1kw motors which is equivalent to a total output of 3.0HPand#8212; up to 40% more than other models on the market! BIG 50L TANK With its 50L tank it is capable of delivering a continuous 200 litres per minute air supply for a huge variety of applications. SERVICE FREE DESIGN Unlike petrol and other belt driven models on the market with this oil free electric model you donand#8217;t have to worry about engine maintenance or replacing belts or pulleys. TWO NITTO OUTLETS The two quick connect outlets let you use a wide array of tools including grinders impact wrenches welders nail guns grease guns chisels and more. It also has automatic on off pressure control. EASY TO USE The precise easy to read tank pressure and line pressure gauges take the guesswork out of filling and using your air compressor. Its extended handle makes it a breeze to move. It also has a grab handle for ease of manoeuvring in tighter spaces. It's safe to say the UNIMAC ACM 500s silent air compressor blows the competition away! Specification Brand: Un
UNIMAC 50L 3.0HP Silent Oil Free Electric Air Compressor Portable Twin Nitto Outlets
Introducing the UNIMAC ACM 500s Quiet Air series double twin cylinder Air Compressor! This is a trade quality 4 Cylinder unit ideal for anyone looking for the performance and reliability that only an oilless electric air compressor can provide. DUAL MOTOR The ACM 500s has 2 twin cylinder motors. With UNIMAC Electronic APC the motorsand#8217; output is equalised. That means the motors run at maximum efficiency for fast air tank filling. ULTRA QUIET This Unimac Quiet Air Series is engineered to be just that. Whisper Vortex cooling fans Hush Baffle air intakes and vulcanised rubber motor mounts and rubber tyres combine to give this an Lpa of only 64 dBa and#8212; thatand#8217;s nearly library quiet! CLASS LEADING POWER This ACM 500s Oil Free Air Compressor is powered by 2 twin cylinder 1.1kw motors which is equivalent to a total output of 3.0HPand#8212; up to 40% more than other models on the market! BIG 50L TANK With its 50L tank it is capable of delivering a continuous 200 litres per minute air supply for a huge variety of applications. SERVICE FREE DESIGN Unlike petrol and other belt driven models on the market with this oil free electric model you donand#8217;t have to worry about engine maintenance or replacing belts or pulleys. TWO NITTO OUTLETS The two quick connect outlets let you use a wide array of tools including grinders impact wrenches welders nail guns grease guns chisels and more. It also has automatic on off pressure control. EASY TO USE The precise easy to read tank pressure and line pressure gauges take the guesswork out of filling and using your air compressor. Its extended handle makes it a breeze to move. It also has a grab handle for ease of manoeuvring in tighter spaces. It's safe to say the UNIMAC ACM 500s silent air compressor blows the competition away! Specification Brand: Un
Introducing the UNIMAC ACM 500s Quiet Air series double twin cylinder Air Compressor! This is a trade quality 4 Cylinder unit ideal for anyone looking for the performance and reliability that only an oilless electric air compressor can provide. DUAL MOTOR The ACM 500s has 2 twin cylinder motors. With UNIMAC Electronic APC the motorsand#8217; output is equalised. That means the motors run at maximum efficiency for fast air tank filling. ULTRA QUIET This Unimac Quiet Air Series is engineered to be just that. Whisper Vortex cooling fans Hush Baffle air intakes and vulcanised rubber motor mounts and rubber tyres combine to give this an Lpa of only 64 dBa and#8212; thatand#8217;s nearly library quiet! CLASS LEADING POWER This ACM 500s Oil Free Air Compressor is powered by 2 twin cylinder 1.1kw motors which is equivalent to a total output of 3.0HPand#8212; up to 40% more than other models on the market! BIG 50L TANK With its 50L tank it is capable of delivering a continuous 200 litres per minute air supply for a huge variety of applications. SERVICE FREE DESIGN Unlike petrol and other belt driven models on the market with this oil free electric model you donand#8217;t have to worry about engine maintenance or replacing belts or pulleys. TWO NITTO OUTLETS The two quick connect outlets let you use a wide array of tools including grinders impact wrenches welders nail guns grease guns chisels and more. It also has automatic on off pressure control. EASY TO USE The precise easy to read tank pressure and line pressure gauges take the guesswork out of filling and using your air compressor. Its extended handle makes it a breeze to move. It also has a grab handle for ease of manoeuvring in tighter spaces. It's safe to say the UNIMAC ACM 500s silent air compressor blows the competition away! Specification Brand: Un
in 30 offers
last seen 30 Oct 2026
The lowest price we last saw for UNIMAC 50L 3.0HP Silent Oil Free Electric Air Compressor Portable Twin Nitto Outlets was $294.00 at Harvey Norman, compared across 26 retailers (last seen 30 Oct 2026). Prices may have changed since.
The all-time low we recorded was $48.00 on 13 Feb 2026.
Prices last updated 30 Oct 2026.
Last updated at 30/10/2026 03:53:13
Unimac 50L Oil-Free Electric Air Compressor | Portable Design, Large Tank Capacity, Suitable For Workshop Applications
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UNIMAC 50L 3.0HP Silent Oil-Free Electric Air Compressor, Portable, Twin Nitto Outlets
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UNIMAC 50L 3.0HP Silent Oil-Free Electric Air Compressor, Portable, Twin Nitto Outlets
Free delivery
UNIMAC 50L 3.0HP Silent Oil-Free Electric Air Compressor, Portable, Twin Nitto Outlets
Free delivery between 2–12 Nov
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Free delivery
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Delivery between 3–6 Nov $10
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14-day returns
| Pump Style | Corded Electric |
| Flow Rate | 420L/min (air displacement) |
| Automatic Shutoff | Automatic Pressure Control Switch |
| Maximum Pressure | 116 PSI (Working Pressure) |
| Pressure Setting | Automatic pressure control switch, Restart Pressure: 86PSI, Restart pressure of 86psi (6bar) |
Unimac 50L Oil-Free Electric Air Compressor | Portable Design, Large Tank Capacity, Suitable For Workshop Applications
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
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Delivery between 2–7 Nov $42.80
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UNIMAC 50L 3.0HP Silent Oil-Free Electric Air Compressor, Portable, Twin Nitto Outlets
Free delivery between Tue – Wed
UNIMAC 50L 3.0HP Silent Oil-Free Electric Air Compressor, Portable, Twin Nitto Outlets
Delivery between 2–10 Nov $10
| Pump Style | Corded Electric |
| Flow Rate | 420L/min (air displacement) |
| Automatic Shutoff | Automatic Pressure Control Switch |
| Maximum Pressure | 116 PSI (Working Pressure) |
| Pressure Setting | Automatic pressure control switch, Restart Pressure: 86PSI, Restart pressure of 86psi (6bar) |