16 Bar 7.5KW 11KW 15KW 22KW All-In-One Screw Air Compressor For 1000W–6000W Fiber Laser Cutting

A 16 bar all-in-one rotary screw air compressor for fiber laser cutting integrates the screw airend, air receiver, refrigerated or desiccant dryer, multi-stage filtration and PLC control in one cabinet. For 1000W, 1500W, 2000W, 3000W, 4000W, 6000W fiber laser cutting machines, the package supplies clean, dry, stable-pressure assist air for molten metal ejection, edge quality control and protection of focus lenses, protective windows and optical paths. Instead of buying separate compressor, tank, dryer and filter skids, the fabricator connects power, compressed air outlet and drain, then sets the laser assist pressure.

Modern fiber lasers often run higher assist pressure than general workshop tools. A 16 bar screw platform gives headroom for thin-sheet high-speed cutting, medium plate and thicker stainless/aluminum jobs where line loss, filter differential and dryer pressure drop would otherwise starve the cutting head. The 7.5–22kW range covers single small lasers up to busy 6kW production cells when the compressor FAD is matched to actual nozzle consumption rather than to laser wattage alone.

All-In-One 16 Bar Model Range

Published 16 bar values vary by airend, cooling, VSD and site condition. Always request factory FAD test at 16 bar, not only nameplate horsepower. A 22kW unit advertised at 2.1 m³/min at 16 bar may deliver more at 10 bar and less after intake restriction, high ambient and filter loading.

Fiber Laser Air Demand By Power

Assist-air consumption depends on laser source, cutting head, nozzle diameter, material, thickness and gas mode. Air is commonly used for carbon steel economy cutting and some thin stainless/aluminum; nitrogen or oxygen may be preferred for bright oxide-free edges, thick plate or reflective metal.

Sizing rule: take laser maker’s peak air consumption at the intended thickness and gas, specify compressor FAD at least 1.3–1.5× peak, then add tank and dryer capacity to cover nesting surges. A 6kW laser quoted at 0.8–1.0 m³/min peak may run well on 15kW, but a 6kW cell cutting thick stainless with large nozzles and high duty can exceed 2.0 m³/min and needs 22kW or above.

Why 16 Bar For Laser Cutting

• Nozzle pressure after loss: dryer, coalescing/particulate/carbon filters, regulators, long pipe and quick couplings can drop several bar. A 16 bar source protects 10–12 bar nozzle pressure.

• High-speed thin sheet: higher assist pressure improves melt evacuation, reduces dross and stabilizes kerf on carbon steel air cutting.

• Stainless/aluminum air trials: many programs run 10–14bar; 16 bar gives margin for simultaneous filtration loss and future thicker jobs.

• Nitrogen generator feed: if the shop uses on-site PSA nitrogen instead of cylinders, the compressor often supplies lower inlet pressure to the generator, but laser assist and generator buffering may share one 16 bar screw in small plants.

• Single laser + workshop air: 16 bar serves laser assist while regulated branches supply 7–8bar tools, table blow-off and pneumatic clamps.

Air Quality For Laser Optics

Contaminated air is the fastest way to destroy laser optics. Moisture causes lens fogging, thermal distortion and rust in downstream components; oil aerosol coats protective windows and focus lenses; particles scratch optics and clog nozzles.

Recommended all-in-one treatment:

Many laser cutting specifications ask for ISO 8573-1 tight classes, low oil and low dew point. An oil-injected all-in-one screw can meet many shops if filtration is correctly sized and maintained; for food/medical stainless, ultra-clean nitrogen-like edges or zero-oil optical risk, specify oil-free airend or independent oil-free booster/PSA with validated Class 0.

Dryer And Filter Configuration

Standard 16 bar all-in-one laser units often include:

• Aftercooler and moisture separator before tank or after tank according to package layout.

• Refrigerated dryer sized for 16 bar flow; some combined models publish +2 to +10°C outlet dew point.

• Coalescing oil-removal filter before clean distribution.

• General particulate filter after coalescer; sub-micron final filter near laser inlet.

• Optional desiccant dryer or dew-point-demand desiccant branch for -40°C assist, humid climate, overnight cold start and premium stainless.

• Zero-loss or timer/electronic drain on tank, dryer and filter bowls; oil-water separator for oil-injected condensate.

For 1000–3000W air-cutting carbon steel in a climate-controlled shop, refrigerated drying plus good coalescing/particulate filtration is usually enough. For 4000–6000W premium cutting, stainless food/medical, humidity above 60% or any optical fogging history, specify desiccant low dew point and document ISO 8573-1.

VSD Versus Fixed-Speed For Laser Cells

• Fixed-speed 7.5–15kW: lower capital, good for steady single-shift cutting at near-constant flow. Risk: unloaded running and pressure swing if laser demand varies widely.

• PM VSD 7.5–22kW: adjusts speed to laser demand, stabilizes pressure band, reduces unloaded power, soft-starts on weak supply and improves part-load efficiency. Best for 3000–6000W cells, nested programming, multiple shifts and shared shop air.

• 22kW laser all-in-one: VSD strongly recommended because 6kW cutting profiles change flow sharply between piercing, thin-sheet rapid cutting and thick-plate slow passes.

Tank Sizing For 16 Bar Laser

Receive tank stabilizes pressure, reduces compressor modulation and absorbs piercing surges.

Some 7.5/11/15/22 all-in-one laser models use 260–500L depending on brand and layout. Larger tank does not replace insufficient FAD; it only buffers peaks. If the screw cannot sustain laser peak FAD at 16 bar, add compressor capacity, not only tank volume.

Piping And Pressure Drop

A common laser air mistake is specifying 16 bar compressor but losing 3–6 bar before the head.

• Use stainless or cleaned aluminum air main for laser assist; avoid untreated steel with rust scale.

• Size pipe by 16 bar flow and allowable drop, typically under 0.5–1.0 bar from receiver to nozzle manifold.

• Keep filter count reasonable; each coalescer/particulate/desiccant stage adds differential. Monitor DP and change elements before pressure falls.

• Place final point-of-use filter close to laser, not 20m away with small hose.

• For 6000W cells, separate laser assist ring from general 7–8bar tool air; regulate each branch from the 16 bar main.

Electrical And Installation

7.5–22kW laser screw packages are commonly three-phase 380/400/415V 50Hz or 460V 60Hz; some small 7.5kW variants may be offered single-phase but single-phase 16 bar high-duty draws heavy current and is not ideal for 15–22kW.

• Confirm voltage/frequency, starter type, VSD input range and site breaker capacity.

• Provide dedicated feeder; do not share with laser chiller, fume extractor and oven on the same phase group without load study.

• Allow rear louver clearance for aftercooler/dryer condenser, front door clearance for filter service.

• Install condensate drain to oil-water separator; laser rooms dislike open draining.

• Commission with laser maker: set regulator at head spec, measure pressure at nozzle under cut, verify dew point at point of use, log filter DP.

Maintenance Program

Application Examples

1000–2000W job-shop sheet

7.5kW 16 bar all-in-one, 200–260L tank, refrigerated dryer, coalescing+1µm particulate. Serves carbon steel 0.5–3mm air cutting, occasional stainless samples at lower speed. Upgrade to 11kW if two lasers or weekend continuous nesting.

3000W mixed carbon/stainless

11–15kW 16 bar VSD, 340–500L tank, refrigerated main; desiccant branch for stainless and humid summer. Coalescing oil-removal + sub-micron final filter at laser. Regulate 7–8bar branch for table blow-off and pneumatic clamps.

4000W thick-plate and high-speed thin

15kW minimum, 22kW preferred. 16 bar screw, 480–500L receiver, refrigerated+desiccant low dew point for optics, multi-stage filtration, VSD pressure control. Use nitrogen generator or cylinder for premium stainless; air for carbon steel economy.

6000W production fiber cell

22kW all-in-one or larger central 16 bar screw system. Specify FAD from laser nozzle table at maximum thickness program, add 30% margin, verify 16 bar delivered pressure after dryer/filter/pipe. Desiccant -40°C for optical safety in air-assist stainless; separate oxygen/nitrogen lines for grades requiring oxide-free edges.

Frequently Asked Questions

Can a 7.5kW 16 bar all-in-one run a 3000W fiber laser?

For light 3000W sheet cutting at modest flow, possibly; for continuous 3kW nesting, thick plate or air-assist stainless, 7.5kW at 0.6 m³/min is usually too small. Most 3kW production cells need 0.9–1.5 m³/min at working pressure; choose 11–15kW.

Is 16 bar necessary for 1000W laser?

Not always. Many 1kW thin-sheet jobs run 6–8bar. But a 16 bar all-in-one still helps if the shop shares air with higher-pressure jobs, long pipe runs or future 3kW upgrade. For dedicated 1kW light sheet, 8–10bar may be cheaper to run.

Does refrigerated dryer meet laser quality?

For many carbon-steel air-cutting shops in climate-controlled rooms, yes if dew point, oil and particles meet laser spec. For premium optics, humid climates, stainless food/medical or winter outdoor lines, desiccant -40°C is safer.

Oil-injected or oil-free for laser cutting?

Oil-injected screw with high-efficiency coalescing/carbon filtration satisfies many general laser air systems. Oil-free airend or validated Class 0 is preferred where laser maker forbids oil aerosol, for sensitive optics, food/medical stainless or ultra-clean assist.

How do I size compressor for 6000W if cutting many materials?

Take worst-case nozzle consumption from laser builder at 6kW for your thickest/stainless/air program, convert to m³/min at 16 bar, add simultaneous table/blow-off load, multiply by 1.3–1.5 margin. If result exceeds 2.4 m³/min, 22kW all-in-one may be marginal and a central 30–37kW 16 bar screw is better.

What filtration grade should be at the laser head?

Start with coalescing oil-removal filter, then general particulate, then final sub-micron according to ISO 8573-1 target. Many laser specs ask for very low oil and 0.01–0.1µm particle range, but exact class must match lens/window tolerance and assist gas mode.

Can one 16 bar compressor serve laser and workshop tools?

Yes. Run 16 bar main to laser through dryer/filters; regulate 7–8bar branches for tools, table, inflator and pneumatic fixtures. Do not feed dirty shop air into the laser ring. Size total FAD for laser peak plus workshop average, not laser alone.

Why not use 8 bar general compressor for fiber laser?

8 bar may work for low-power thin sheet but can fall below nozzle requirement after dryer/filter/pipe loss, especially at 3–6kW thick or high-speed programs. 16 bar gives assured headroom and更稳定 assist pressure.

How much tank does a 22kW laser unit need?

All-in-one 22kW laser models commonly use 480–500L; busier 6kW cells can use larger external receiver. Tank buffers piercing and nesting surges but cannot replace insufficient screw FAD.

What pressure should I set at the cutting nozzle?

Follow laser manufacturer for each material and gas. Air-assist carbon steel may use lower pressure; stainless/aluminum premium programs and high-speed thin sheet may use higher pressure. Set compressor/regulator to deliver specified nozzle pressure plus system loss, not the maximum 16 bar on every job.

A 16 bar 7.5/11/15/22kW all-in-one screw air compressor for 1000–6000W fiber laser cutting should be selected by verified FAD at 16 bar, laser peak consumption by material and nozzle, integrated receiver, refrigerated drying as baseline with desiccant option for low dew point, multi-stage coalescing/particulate/carbon filtration to the laser maker’s ISO 8573-1 class, and PM VSD control for stable pressure in variable cutting programs. Correct sizing prevents dross, lens contamination, pressure sag and unplanned optical replacement across light 1kW sheet work through heavy 6kW production.