Combined Screw Air Compressor

Combined Screw Air Compressors

Laser Cutting Professional Air Compressor Single Stage Belt Drive Air Screw Compressor with Air Dryer Tank and Filters is made of qualified and easy-to-process raw materials. Combining all the great performance of those materials, ZIQI Compressor(Shanghai)Co.,Ltd is stable and durable in use.It is a perfect combination of all perfection and is bound to create benefits for customers.
Working Power
3.7 - 22 kW
Free Air Delivery
0.35 - 3.8 m³/min
Working Pressure
0.7 - 1.3 MPa
Transmission
Belt Driven
Cooling Method
Air Cooling
Combined Screw Air Compressor
Combined Screw Air Compressor
Combined Screw Air Compressor
Combined Screw Air Compressor
Combined Screw Air Compressor
Combined Screw Air Compressor
Combined Screw Air Compressor
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Combined Screw Air Compressor is an integrated compressed air solution designed to deliver stable, oil free air or lubricated air according to application needs. Built around efficient rotary screws, this air compressor supports both fixed speed compressor and variable speed compressor configurations, helping achieve consistent energy savings and high efficiency across a wide range of operating conditions.

Engineered for food and beverage processing and other industries that require ensure precision and uninterrupted operation, the system combines quiet operation with low noise levels and a compact structure. Rotary screw air compressors in this combined design offer long service life, energy efficient performance, and reliable compressed air system output for long term use.

With support for oil free screw compressors, flexible capacity control, and durable components, the combined rotary screw compressor meets modern work environment requirements while delivering dependable compressed air solutions for a wide range of industrial applications.
Product Details Product Applications
★ Flagship All-in-One · Laser-Ready up to 16 bar

ZIQI GA-AL Series 4-in-1 Screw Compressor Station

German GHH RAND Airend · WEG IE4 Motor · Built-in Dryer & Filters · ISO 8573-1 Class 1.4.1 · Plug and Play
4-in-1
Integrated Systems
Zero Installation
7
Models (3.7–22 kW)
Full Range
≤63
dB(A) Noise Level
Conversation Quiet
16
bar Max Pressure
Laser-Ready

What Makes the ZIQI GA-AL a "Flagship" All-in-One?

Unlike standard compact compressors that cut corners on the airend and motor, the ZIQI GA-AL Series integrates the same original German GHH RAND airend and WEG IE4 Super Premium motor found in our full-size industrial machines — into a plug-and-play all-in-one chassis.

Each unit combines four systems — screw compressor, air receiver tank, refrigerated dryer, and precision filters — delivering ISO 8573-1 Class 1.4.1 quality air with zero installation piping. Available in 7 models from 3.7 to 22 kW, with pressure options up to 16 bar, the GA-AL is purpose-built for fiber laser cutting, CNC machining, dental labs, food packaging, and any application demanding clean, dry compressed air in minimal floor space.

Core Hardware — No Compromise
The same premium components used in our industrial-scale compressors, now in a compact station.
The Heart      Original German GHH RAND Screw Air End — core compression element of ZIQI GA-AL all-in-one compressor

German GHH RAND Airend

The exact same airend used in our large GAS industrial machines — not a downgraded compact version. Original German engineering delivers 15% higher free air delivery (FAD) than domestic alternatives at the same power rating.

  • Origin: Original German GHH RAND Engineering

  • Performance: 15% Higher FAD vs. domestic airends

  • Duty Cycle: 100% continuous operation rated

  • Design Life: 100,000+ hour airend life expectancy

The Efficiency      WEG IE4 Super Premium Efficiency Motor — direct drive, IP55 dust-proof for laser cutting environments

WEG IE4 Super Premium Motor

Compact machines generate more heat per cubic meter of enclosure. The WEG IE4 motor runs cooler and wastes less energy as heat — critical for an AIO where every watt of waste heat accumulates inside the cabinet.

  • Efficiency: IE4 Super Premium — saves up to 15% electricity

  • Drive: 1:1 Direct Connection — no belt, no belt maintenance

  • Protection: IP55 Dust-Proof — safe in laser cutting dust

  • Savings: $3,000 – $8,000 in electricity over 3 years

4-in-1 Integrated System
Four separate systems, pre-piped into one chassis. Just plug in power and connect your air hose.
⚙️System 1

Screw Compressor

GHH airend + WEG IE4 motor. Oil-injected rotary screw, 100% duty cycle.

🛢️System 2

Air Receiver Tank

ASME-certified thick-wall pressure vessel. Stabilizes pressure pulsation.

❄️System 3

Refrigerated Dryer

Dew point +2~10°C. Removes 95%+ moisture to protect laser lenses.

🔬System 4

Precision Filters

ISO 8573-1 Class 1.4.1 air quality. Oil content ≤0.01 mg/m³.

Application Scenarios
One machine, multiple industries. Clean dry air from 7 to 16 bar covers virtually every precision application.
🔴

Fiber Laser Cutting

13–16 bar · Class 1.4.1

High-pressure clean air for assist gas. Protects laser optics from moisture and oil. Models up to 16 bar match most laser brands.

🔩

CNC Machining

7–10 bar · Standard

Stable air for tool changers, chip blowing, and pneumatic clamping. Direct-drive ensures vibration-free output next to precision machines.

🦷

Dental & Medical Labs

7–8 bar · Ultra-Quiet

62 dB(A) — quieter than a conversation. Clean filtered air for dental chairs, autoclaves, and lab instruments.

🍞

Food Packaging

7–10 bar · Class 1.4.1

ISO-certified clean air for nitrogen generators, filling machines, and packaging lines. No oil contamination risk.

Tell us your laser model or application — we'll recommend the exact GA-AL configuration you need.

Get Free Sizing  WhatsApp Us

Installation & Operating Cost
Save $5,000–$12,000 Over 3 Years vs. Separate Components
No piping contractor ($800–$2,000 saved). No belt replacements ($300–$600/3yr saved). IE4 motor saves ~$1,000/year electricity on an 11 kW unit. Add 60–80% floor space savings and it's an obvious choice for workshops under 500 m².
60–80%
Floor Space Saved
$0
Piping Cost
$0
Belt Replacement
~$1k/yr
Electricity Saved (11kW)
Laser Cutting Sizing Guide
Match your fiber laser power to the right GA-AL model. All recommendations assume single laser, nitrogen assist gas.
🔴

Quick Sizing: Fiber Laser → GA-AL Model

Laser Power Typical Air Demand Required Pressure Recommended GA-AL
≤ 1.5 kW 0.5–0.8 m³/min 10–13 bar GAS-7.5AL (L-type)
1.5–3 kW 0.8–1.3 m³/min 13–16 bar GAS-11AL (L-type)
3–6 kW 1.3–2.2 m³/min 13–16 bar GAS-15AL / GAS-18.5AL
6–12 kW 2.0–3.0 m³/min 16 bar GAS-22AL (L-type)
12 kW+ / Multiple 3.0+ m³/min 16 bar GAS-22AL × 2 or GAS standalone
* Actual sizing depends on laser brand, cutting material, and duty cycle. Send us your laser model for exact free sizing.
AIO Build Quality Comparison
Not all "all-in-one" compressors are created equal. Here's what sets the GA-AL apart.
Feature Standard Market AIO ZIQI GA-AL Flagship
Air End Domestic copy or piston type Original German GHH RAND
Motor Standard IE2 motor WEG IE4 Super Premium
Drive Belt drive — replacement every 3,000–5,000 hrs Direct drive — zero belt maintenance
Air Tank Thin-wall, no certification Thick-wall, ASME certified
Air Quality Basic filter, unknown classification ISO 8573-1 Class 1.4.1
Dryer Capacity Often undersized for rated flow Matched to 100% of rated compressor output
Noise Level 70–78 dB(A) 62–63 dB(A) (conversation level)
Annual Electricity (11 kW) ~$6,800/year (IE2 at 86% eff.) ~$5,800/year (IE4 at 94% eff.) — save $1,000/yr
3-Year Maintenance $1,500–$2,500 (belts + filters + oil) $600–$1,500 (filters + oil only, no belt)
How to Choose Your GA-AL
Three simple steps to select the right model, pressure, and configuration.
1

Identify Your Application

Laser cutting needs 13–16 bar + L-type (dryer). CNC/general workshop needs 7–10 bar. Food/dental needs clean air (L-type). This determines pressure and configuration.

2

Calculate Flow Rate

Match your laser power to the sizing guide above, or add up total air consumption of all pneumatic tools + 20% safety margin. Choose the model that covers your peak demand.

3

Choose C-type or L-type

L-type (with dryer + filters) recommended for most users — especially laser, food, dental. C-type (tank only) if you already have a separate dryer.

Technical Specifications
7 models, 3.7 to 22 kW, pressure up to 16 bar. C = tank only, L = with dryer + filters.
Model Power
(kW)
7 bar
(m³/min)
8 bar
(m³/min)
10 bar
(m³/min)
13 bar
(m³/min)
15 bar
(m³/min)
16 bar
(m³/min)
Noise
dB(A)
Weight
C / L kg
Dimensions (L×W×H mm)
C / L
GA-3.7AL 3.7 0.55 0.45 0.35 62±2 300 / 350 1200×750×1500 / 1800×750×1500
GA-5.5AL 5.5 0.8 0.7 0.6 0.5 62±2 310 / 360 1200×750×1500 / 1800×750×1500
GAS-7.5AL 7.5 1.3 1.2 1.1 0.9 62±2 500 / 550 1350×950×1800 / 1930×740×1655
GAS-11AL 11 1.8 1.5 1.3 1.2 0.75 0.7 63±2 500 / 550 1350×950×1800 / 1950×950×1800
GAS-15AL 15 2.7 2.36 2.3 1.7 1.4 1.3 63±2 795 / 850 2300×890×1725 / 2300×890×1725
GAS-18.5AL 18.5 3.2 3.0 2.6 2.2 1.7 1.65 63±2 795 / 850 2300×890×1725 / 2300×890×1725
GAS-22AL 22 3.6 3.5 3.0 2.6 2.3 2.17 63±2 800 / 850 2300×890×1725 / 2300×890×1725

* C = Compressor + Tank (without dryer). L = Compressor + Tank + Dryer + Filters (recommended for laser cutting). All air delivery values in FAD at stated pressure. "—" = pressure option not available for this model. Contact us for exact configuration and pricing.

Not sure which model? Send us your air demand details — free sizing in 15 minutes.

Request Sizing  WhatsApp Engineer
Frequently Asked Questions
Can ZIQI GA-AL be used for fiber laser cutting?
Yes. The GAS-11AL through GAS-22AL models offer pressure up to 16 bar (1.6 MPa) — matching the requirements of most fiber laser cutting machines from 1 kW to 12 kW. The built-in refrigerated dryer delivers dew point of +2~10°C, and precision filters achieve ISO 8573-1 Class 1.4.1 air quality, protecting laser lenses from moisture and oil contamination. For a single laser under 3 kW, the GAS-11AL at 16 bar is typically sufficient. For 6 kW+ lasers, choose the GAS-18.5AL or GAS-22AL.
What is included in the GA-AL all-in-one station?
Each L-type GA-AL unit integrates four systems into one chassis: a rotary screw compressor (with German GHH RAND airend and WEG IE4 motor), an ASME-certified air receiver tank, a built-in refrigerated air dryer, and precision filtration to ISO 8573-1 Class 1.4.1. All internal piping is factory-connected — just connect power and your air hose. The C-type includes compressor and tank only (without dryer), for users who already have a separate dryer.
What is the difference between C-type (tank only) and L-type (with dryer)?
C-type = Compressor + Air Tank only — suitable when you already have a separate dryer or do not need dry air. L-type = Compressor + Tank + Refrigerated Dryer + Precision Filters — essential for laser cutting, painting, and any application requiring clean, dry air. For most users, the L-type is the recommended choice. The L-type is slightly heavier and, for the smaller models (3.7–5.5 kW), slightly longer in dimension.
What is the advantage of the WEG IE4 motor in an AIO compressor?
All-in-one compressors run inside compact, enclosed cabinets where heat accumulates faster than in open-frame machines. A standard IE2 motor wastes more energy as heat, making the cabinet hotter and reducing component life. The WEG IE4 motor runs cooler and converts more electricity into useful compression — saving approximately $1,000/year on an 11 kW unit. Over 3 years, this saves $3,000–$8,000 depending on usage, often paying for the price difference of the machine itself.
How loud is the GA-AL compressor?
The GA-AL series operates at 62–63 dB(A) ±2 — roughly the volume of a normal conversation. This allows installation directly next to production equipment like laser cutters and CNC machines without requiring a separate compressor room, saving floor space and piping costs.
What size GA-AL do I need for my laser cutter?
It depends on your laser power and cutting gas requirements. As a guide: for a single fiber laser under 3 kW, the GAS-7.5AL or GAS-11AL at 13–16 bar is typically sufficient. For 3–6 kW lasers, choose the GAS-15AL or GAS-18.5AL. For 6 kW+ or multiple lasers, the GAS-22AL provides 2.17 m³/min at 16 bar. Send us your laser model number and we'll calculate the exact sizing for free.
How much floor space does the GA-AL save compared to separate components?
A traditional setup with separate compressor, tank, dryer, and filter bank typically needs 6–10 m² of floor space plus piping installation. The GA-AL L-type occupies just 0.9–2.1 m² with zero piping, saving 60–80% of installation footprint. For small workshops and laser cutting studios where every square meter counts, this is a significant advantage.
What maintenance does the GA-AL require?
Routine maintenance includes: oil and filter change every 2,000–3,000 hours, air filter cleaning every 500 hours, and dryer condensate drain check monthly. The direct-drive design eliminates belt replacement entirely — a common maintenance item on belt-driven AIO machines. Total annual maintenance cost is typically $200–$500 depending on model size, compared to $500–$800 for belt-driven alternatives.
Related Products

Ready to Simplify Your Compressed Air System?

Tell us your application (laser cutting, CNC, packaging, etc.), required pressure, and flow rate. We'll recommend the exact GA-AL model and ship it ready to plug in.

* All air delivery values measured in FAD at stated pressure. C = compressor + tank. L = compressor + tank + dryer + filters. Specifications subject to change. Contact ZIQI for exact configuration and pricing.

GA-AL Series Technical Specifications
7 models from 3.7 to 22 kW. Belt drive, air-cooled. All values in Free Air Delivery (FAD) at stated working pressure.
Model Working Pressure Air Delivery (FAD) Motor Power Drive & Cooling Dimensions (mm) Weight
(kg)
Noise
dB(A)
Outlet
(mm)
MPa bar psi m³/min CFM HP kW L W H
GA-3.7AL 0.7 7 102 0.55 19 5 3.7 Belt · Air-Cooled 1800 630 1450 360 60±2 20
0.8 8 116 0.45 16
1.0 10 145 0.35 12
GA-5.5AL 0.7 7 102 0.8 28 7 5.5 Belt · Air-Cooled 1800 630 1450 360 61±2 20
0.8 8 116 0.7 25
1.0 10 145 0.6 21
1.3 13 189 0.5 18
GA-7.5AL 0.7 7 102 1.3 46 10 7.5 Belt · Air-Cooled 1800 750 1600 520 62±2 20
0.8 8 116 1.2 42
1.0 10 145 1.1 39
1.3 13 189 0.9 32
GA-11AL 0.7 7 102 1.8 64 15 11 Belt · Air-Cooled 1800 750 1600 530 63±2 20
0.8 8 116 1.7 60
1.0 10 145 1.5 53
1.3 13 189 1.2 42
GA-15AL 0.7 7 102 2.7 95 20 15 Belt · Air-Cooled 2300 890 1725 850 66±2 25
0.8 8 116 2.5 88
1.0 10 145 2.3 81
1.3 13 189 2.0 71
GA-18.5AL 0.7 7 102 3.2 113 25 18.5 Belt · Air-Cooled 2300 890 1725 870 67±2 25
0.8 8 116 3.0 106
1.0 10 145 2.8 99
1.3 13 189 2.4 85
GA-22AL 0.7 7 102 3.8 134 30 22 Belt · Air-Cooled 2300 890 1725 890 67±2 25
0.8 8 116 3.6 127
1.0 10 145 3.2 113
1.3 13 189 2.8 99

* All air delivery values measured in Free Air Delivery (FAD) at stated working pressure. Belt drive, air-cooled. Dimensions and weight shown for L-type (with integrated dryer) configuration. Specifications subject to change. Contact ZIQI for exact configuration and pricing.

Need help choosing the right GA-AL model? Send us your application — free sizing in 2 hours.

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