ABAC AS-20S503TMD 20 HP Rotary Screw Air Compressor - 132 Gallon Tank Mount with Dryer, 150 PSI, 78 CFM, 67 dBA

The ABAC AS-20S503TMD is a complete compressed air station on one base: a 20 HP rotary screw compressor, a 132 gallon horizontal air receiver and an integrated refrigerated dryer, delivered already matched, mounted and wired together. It delivers 78 CFM at 150 PSI and runs at 67 dBA on 208-230-460V three-phase power. At 1297 lbs in a 75 x 31 x 72 in footprint it replaces a compressor, a tank and a dryer that would otherwise have to be sized, sited, plumbed and powered as three separate purchases.

Key specifications

• Model: AS-20S503TMD (part number 4152028468)
• Motor: 20 HP, energy efficient
• Air delivery: 78 CFM
• Working pressure: 150 PSI
• Noise level: 67 dBA
• Tank: 132 gallon horizontal receiver, tank mount
• Integrated refrigerated air dryer
• Power supply: 208-230-460/3/60
• Weight: 1297 lbs
• Dimensions: 75 x 31 x 72 in
• Fully integrated aluminum block air end
• Eco friendly vertical oil separation

How it compares

The S in AS-20S is the difference worth understanding: against the standard AS-20503TMD at the same 20 HP and the same 150 PSI, this machine delivers 78 CFM instead of 54 CFM and runs at 67 dBA instead of 71 dBA. That is 24 CFM more air from the same motor rating, which is what shops reach for when sandblasting, plasma cutting, or several bays running at once pull a standard 20 HP unit down. If your tools want maximum volume rather than higher line pressure, the AS-20S253TMD trades pressure for flow at 81.9 CFM and 125 PSI from the same 1297 lb package. If you need more volume still at 150 PSI, the AS-25503TMD steps up to 92.2 CFM.

What the TMD package includes

TMD is tank mount with dryer. The compressor sits on the 132 gallon receiver and the refrigerated dryer is built into the same assembly, so the air is dried at the compressor before it ever reaches your distribution piping. That keeps condensate out of the lines instead of leaving it for traps and point of use filters to catch downstream. If you already own a receiver, the AS-20S503BMD puts the same compressor and dryer on a base at 798 lbs, and the AS-20S503BM is the bare compressor at 690 lbs if you intend to size the dryer yourself from our refrigerated air dryers.

Typical applications

Production and fabrication floors, automotive and fleet service bays, tire and truck shops, sandblasting and plasma cutting, spray finishing and powder coating, and any operation that needs a higher line pressure than a 125 PSI machine will hold and cannot afford water in the air. A rotary screw is designed for continuous duty, so it holds steady line pressure through a full shift rather than recovering between jobs, and the 132 gallon receiver absorbs the demand spikes that would otherwise show up as pressure drop at the tool.

Part of the ABAC AS-B screw range from the Atlas Copco group, built around a fully integrated aluminum block, eco friendly vertical oil separation and an energy efficient motor. Browse the rest of our rotary screw air compressors.