Pro Line Extensive and Expert A49B compressors — two-stage, 11 bar

Extensive and Expert · two-stage · 11 bar · 90 to 270 l

Fourteen belt-driven ABAC compressors with the same two-stage A49B pump, a working pressure of 11 bar and two levels of spec. The Extensive (BT) is the base spec: an aftercooler, a pressure switch with a regulator, one front swivel castor with a brake and an open handle. The Expert (BP) adds two front castors with brakes, a closed handle with a rubber grip and, on the outlet, a filter-regulator — with two quick couplings on the 150 to 270 l. A 2.2, 3 or 4 kW motor, 444, 553 or 595 l/min of displacement, a horizontal 90 to 270 l tank, single- and three-phase versions. Machines for the garage, the paint shop and the workshop, where tools draw air for long stretches and a higher pressure in the tank comes in handy; we service the ABAC brand.

Which Extensive or Expert A49B — spec, motor and tank

Three choices, in this order: how much spec you want on the machine, how much air the pump should deliver and how much of it the tank should hold. The voltage is then decided by the socket in your workshop.

Fourteen machines side by side

All of them: a two-stage twin-cylinder oil-lubricated A49B pump with an oil sight glass, V-belt drive under a moulded guard, an aftercooler on the pump outlet, an electric motor with thermal overload protection, a pressure switch, a pressure regulator, two gauges (tank and outlet), a DN 7.2 quick coupling, a horizontal tank rated at 11 bar with a ball valve for draining condensate, two rear wheels. Every Expert has a filter-regulator on the outlet; on the 150 to 270 l with two quick couplings. Noise: the first figure is the sound power level Lwa, the second the sound pressure at 4 m from the machine. The listing below this text also includes three machines of the older A-X range with a wire belt guard (A49BX-4-90CT, A49BX-2.2-150CT, A49BX-4-270FT) — they are not in the table; they belong to the Pro Line A-X clearance. There are also three upright Experts with the same pump and a 270 l tank standing on end (A49BP-2.2-270VM, A49BP-3-270VT, A49BP-4-270VT); their home is among the vertical ABAC compressors.

#showmore#

Extensive (BT), or Expert (BP) — and when to go for the A39B, the B59–B70 range or the Silent

Under the guard it is always the same two-stage A49B pump: the difference between Extensive and Expert lies in how you move the machine about and in what sits on the outlet. The sister ranges: the A39B has a single-stage pump at 10 bar, the B59–B70 bigger two-stage pumps and the Silent the same A49B pump in a sound-insulated cabinet.

Two stages, 11 bar, V-belts and an aftercooler — what is inside

Equipment, operation and maintenance

What you get with every machine

• Two-stage twin-cylinder oil-lubricated A49B pump with an oil sight glass, V-belt drive under a moulded belt guard
• Aftercooler on the pump outlet
• 230 V or 400 V / 50 Hz electric motor with thermal overload protection, automatic stop/start pressure switch
• Pressure regulator, two gauges (tank and outlet) and a DN 7.2 quick coupling — the Expert with a filter-regulator, on the 150 to 270 l with two quick couplings
• Horizontal 90, 150, 200 or 270 l tank rated at 11 bar with a ball valve for draining condensate
• Extensive: one front swivel castor with a brake and an open handle; Expert: two front swivel castors with brakes, a closed handle with a rubber grip and a filter-regulator on the outlet
• AirTube QR code on the tank opens service videos
• 2-year warranty, 10 years on the tank against rusting through; extension to 3 years at extra cost

Four sizes, two spec levels

Machine details

Where the Extensive and Expert A49B work

Accessories and service

The DN 7.2 quick coupling is the same standard as on the hoses, guns and tools across our whole range. The Extensive has a regulator without a filter — for a spray gun add a regulator with a filter at the workstation; the Expert has the filter-regulator on the machine already. ABAC belongs to the Atlas Copco group and is one of the brands we repair in our own service workshop; we carry the A49B pump and the A49-PK1 service kit as separate items.

• pressure regulator with a filter — A filter and regulator at the workstation for a spray gun — a must with the Extensive.
• spray guns — HVLP and LVLP guns; with 553 or 595 l/min and a 200 or 270 l tank at 11 bar the machine keeps up with them for long spraying.
• impact wrenches — An impact wrench running non-stop for the garage — 11 bar in the tank keeps a reserve.
• tyre inflators — Tyre inflation from a tank at 11 bar.
• blow guns — Blowing off parts and machines.
• spiral hoses — Hoses with DN 7.2 quick couplings from the machine to the tool — the 150 to 270 l Expert has outlets for two.
• A49B compressor pump — Replacement two-stage pump for the whole range; our workshop supplies the parts.
• A49-PK1 service kit — Valve plate, head and cooler gaskets, non-return valve parts and an intake filter for a major service; the oil is bought separately.
• ABAC compressor service — Warranty and post-warranty repairs of ABAC machines in our workshop; belt, filter and oil replacement.

Where next if neither the Extensive nor the Expert A49B is the right fit

The A49B is the two-stage pump of the belt-driven Pro Line range. If you need just 10 bar, more air than 595 l/min, a machine running next to the workstation or oil-free air, ABAC has alternatives. You will find the whole range, with filters by output, tank and voltage, among all compressors.

• compressors with the A39B pump — Extensive and Expert with the single-stage A39B pump — 393 or 486 l/min, 10 bar, 50 to 270 l, a lower price.
• two-stage B59–B70 compressors — Bigger two-stage pumps with 4 to 7.5 kW motors and tanks up to 500 l, which the A49B range does not have.
• sound-insulated ABAC Silent compressors — The A49B pump and others in a sound-insulated cabinet for running next to the workstation.
• the Expert Zero range — The same belt-driven build, but an oil-free pump — for paint shops and upholstery.
• the Pro Line Export range — Single-stage A29B and A39B pumps on 230 V at a lower price.
• Pro Line A-X clearance — The older range with a wire belt guard on clearance, including the three A49BX machines from this listing.
• cast-iron ATMOS Perfect compressors — Cast-iron twin-cylinder ATMOS pumps with an aftercooler, 10 or 12.5 bar, 90 to 500 l tanks.
• two-stage piston compressors — All two-stage machines with filters by output and tank.
• 11 bar compressors — Machines at 11 bar across brands.
• compressors with a 270 l tank — The biggest tanks in the range across brands.
• compressors with a 4 kW motor — Four-kilowatt machines across brands.

Frequently asked questions

How does the two-stage A49B differ from the single-stage A39B, and why 11 bar?

The A39B compresses the air in one step to 10 bar. The A49B does it in two: the first cylinder to an intermediate pressure, the second to 11 bar. Each stage does less work, the pump runs at a lower temperature and a tank at 11 bar holds more air, so the tool draws for longer between top-ups. In return the A49B costs more than an A39B with the same tank — and it has a reserve in the tank that an impact wrench or a sander running non-stop will appreciate.

How do the Extensive (BT) and the Expert (BP) differ?

The A49B pump, the aftercooler, the pressure switch, the two gauges and the DN 7.2 quick coupling are the same on both. The Extensive has one front swivel castor with a brake, an open handle and a regulator with a single outlet. The Expert has two front swivel castors with brakes, a closed handle with a rubber grip and, on the outlet, a filter-regulator — with two quick couplings on the 150 to 270 l. The letter T in the code stands for Extensive, P for Expert.

2.2 kW, 3 kW, or 4 kW?

The 2.2 kW (3 hp) motor turns the pump at 1,050 rpm and gives 444 l/min; the 3 kW (4 hp) motor at 1,300 rpm gives 553 l/min; the 4 kW (5.5 hp) motor at 1,400 rpm gives 595 l/min. The three- and four-kilowatt machines are three-phase only — 3 kW with 90 to 270 l, 4 kW with 200 and 270 l. If 444 l/min is enough, you have both voltages to choose from — only with 270 l does the 2.2 kW come on 230 V alone.

What do CM and CT mean in the designation?

CM is a single-phase motor for an ordinary 230 V socket — in the A49B range only with 2.2 kW (Expert 90CM, 150CM, 200CM, 270CM); CT is a three-phase 400 V motor. Neither displacement nor pressure changes with the voltage; the three-phase motor needs a 400 V socket, the single-phase a short, adequately rated lead so that start-up does not trip the breaker. Single-phase machines of all brands are grouped together under 230 V compressors.

Which tank size should I choose?

The tank does not add displacement, it only extends the time the tool draws air before the motor cuts in — and at 11 bar it holds more than the same tank at 10 bar. 90 l is the garage standard for an impact wrench and a ratchet by one lift; 150 and 200 l hold a reserve for a spray gun and longer sanding; 270 l where several tools take turns, and with a 4 kW motor also for a sandblasting gun. Parameter categories compare machines of all brands by tank size, for example compressors with a 200 l tank.

How much air does the A49B pump deliver?

With a 2.2 kW motor it draws in 444 l/min at 1,050 rpm, with 3 kW 553 l/min at 1,300 rpm, with 4 kW 595 l/min at 1,400 rpm; all of them fill the tank to 11 bar. How much air your tools actually take and how to work it out is explained in our article on choosing a compressor.

How loud are they?

The 2.2 kW machines have 93 dB Lwa and 73 dB at 4 m, the 3 kW machines 96 dB Lwa and 76 dB at 4 m, the 4 kW machines 97 dB Lwa and 77 dB at 4 m. If you need fewer decibels next to the workstation, ABAC has the A49B pump in a sound-insulated cabinet in the Silent range. Stand the machine on a level floor and not tucked into a corner, where the noise bounces back.

Which model has an outlet filter?

Every Expert (BP): the nineties have a filter-regulator with a bowl next to the switch and a single quick coupling, the 150, 200 and 270 l a filter-regulator with a gauge and two quick couplings on the tank neck — both catch condensate and dirt before the air leaves for the tool. The Extensive (BT) has a regulator with a single outlet and no filter; if you want to spray with it, add a regulator with a filter at the workstation.

Why does the A49B have V-belts, and what are the moulded guard and the aftercooler for?

The belts let the pump run slower than the motor — 1,050, 1,300 or 1,400 rpm; the pistons do fewer cycles per shift and the pump heats up less. The moulded belt guard guides cooling air from the pulley over the finned cylinders; the aftercooler cools the compressed air before it enters the tank, so the condensate stays in the tank. Lighter machines without belts are in the ABAC Line range.

What do the code A49BP-3-200CT and the “CT4 / Hp 4” label mean?

A49B is the pump, T Extensive, P Expert, the number after the hyphen the motor power in kW, the next number the tank volume in litres, C a machine on castors, M single-phase 230 V, T three-phase 400 V. The motor is marked in horsepower: 3 hp = 2.2 kW, 4 hp = 3 kW, 5.5 hp = 4 kW — which is why the A49BP-3-200CT has “CT4” on its label.

What is the warranty?

Two years on the machine, with an optional extension to three years at extra cost when you buy, and ten years on the tank against rusting through. That goes hand in hand with routine maintenance as per the manual: draining the condensate, checking the oil level in the sight glass, changing the oil and cleaning the intake filter; for a major service we carry the A49-PK1 service kit with a valve plate, gaskets and an intake filter (oil separately).

Who is the range for?

For the garage, the paint shop and the workshop, where tools draw air for long stretches and the 11 bar reserve in the tank comes in handy: an impact wrench by the lift, a spray gun, a sander, sandblasting. The Expert for those who wheel the machine about every day; the Extensive for a fixed spot. A piston machine works in cycles and needs pauses; for a continuous draw for several people choose a screw compressor — all machines with parameter filters are among compressors for professional use.

How does the A49B differ from the B59–B70 range and from the Silent?

The B59 to B70 are bigger two-stage pumps of the same build — 11 bar, 4 to 7.5 kW motors, displacement up to 1,210 l/min and tanks up to 500 l — for workshops where 595 l/min is not enough. The Silent has the A49B pump or the pumps of the B range in a sound-insulated cabinet for running next to the workstation. An overview of all the ranges is in the ABAC PRO Line guide.

Where do I find the service videos, and who does the servicing?

On the tank there is an AirTube sticker with a QR code — scanned with a phone, it opens instructional and service videos for the pump. Service, belts, filters and oil are handled by our workshop; the other ranges, from the suitcase models to the screw compressors, are in the ABAC brand guide.

All values apply to a 50 Hz supply. Air displacement is the amount of air the pump draws in; how much of it reaches the tool depends on the pressure and the tank. Noise is given as the sound power level Lwa and the sound pressure at 4 m from the machine. A piston compressor works in cycles (topping up the tank and pausing), not continuously.