ABAC AS-30253BMD 30 HP Rotary Screw Air Compressor - Base Mount with Dryer, 125 PSI, 114.1 CFM, 70 dBA

The ABAC AS-30253BMD is a 30 HP rotary screw air compressor with a refrigerated dryer built into the same cabinet, for plants that need a large, steady volume of clean, dry air all day. It delivers 114.1 CFM at 125 PSI and runs at 70 dBA. This is the base mount version, so it ships without a receiver and plumbs into a tank you already own or one sized to your demand. Power is 208-230-460V three phase.

Key specifications

• Model: AS-30253BMD (part number 4152028465)
• Motor: 30 HP
• Air delivery: 114.1 CFM
• Maximum pressure: 125 PSI
• Noise level: 70 dBA
• Mounting: base mount with integrated refrigerated dryer, no tank
• Power supply: 208-230-460V / 3 phase / 60 Hz
• Dimensions: 55 x 31 x 49 in
• Weight: 867 lbs
• Fully integrated aluminum block air end
• Vertical oil separation
• Brand: ABAC, part of the Atlas Copco group

How it compares

Within the AS-B 30 HP range the choice comes down to pressure, dryer and receiver. The AS-30253BM is the same 114.1 CFM machine without the dryer: 759 lbs in a 44 x 31 x 49 in cabinet. Adding the dryer here takes it to 867 lbs and 55 x 31 x 49 in, 11 inches longer, and that is the whole cost of having the dryer already matched, mounted and wired rather than sized, sited and plumbed later. The AS-30503BMD is the 150 PSI build of this same cabinet and trades flow for pressure, 103.1 CFM instead of 114.1, so take it only if your line genuinely needs 150 PSI. Step down one size and the AS-25253BMD gives 98.9 CFM at 69 dBA. If you have no receiver at all, the AS-30253TMD puts the same compressor and dryer on a tank as one assembly.

Sizing the receiver

A base mount machine is only half the installation. At 114.1 CFM this unit wants a receiver in the 240 to 400 gallon range for most plants, more if the demand is spiky, and the tank does the work of smoothing load swings so the compressor spends its time loaded rather than cycling. Browse horizontal air compressor tanks and vertical and horizontal receivers, and add an oil water separator on the dryer drain so the condensate leaves the building legally. Give the cabinet clear air on the cooling side, keep the room ventilated, and run it on its own disconnect sized to the motor nameplate.

Typical applications

Production and fabrication floors, machine shops running multiple CNC cells, automotive and fleet service bays, tire and truck shops, sandblasting and plasma cutting, spray finishing, and any operation where moisture in the line is spoiling tools, air logic or finish quality. A rotary screw is designed for continuous duty, so it holds a steady line pressure through a full shift instead of recovering between jobs, and the onboard dryer takes the water out before it reaches your distribution piping.

Part of the ABAC AS-B screw range from the Atlas Copco group, built around a fully integrated aluminum block, vertical oil separation and an energy efficient motor for up to 10 percent lower carbon footprint. At 114.1 CFM this is the highest flow in the AS-B base mount range, the machine a plant steps up to when added bays, a blast cabinet or a continuous process leave a smaller compressor running loaded almost all the time. See the rest of our rotary screw air compressors and the full fixed speed rotary screw range.