Kotech KOA Series Centrifugal Air Compressor: 100% Oil-Free & Energy-Efficient Solutions for Large-Scale Industrial Power
The KOA Series centrifugal compressor delivers consistent, Class 0 oil-free air for large-scale manufacturing, electronics, and food processing. Engineered for 24/7 continuous duty with maximum isentropic efficiency.
Provide your required flow (m³/min) and pressure. Our senior engineers will customize a TCO-optimized configuration within 24 hours.
Why Large Enterprises Choose KOA Series
Standardized with aerospace-grade aerodynamic technology to ensure zero contamination and minimum energy waste.
Why KOA Centrifugal Wins Critical Projects
Specifically designed for high-demand industries where downtime is not an option and air purity is non-negotiable.
Common Challenges in Large-Scale Air Supply
- High electricity bills from inefficient screw compressors
- Risk of oil contamination damaging sensitive products
- Frequent maintenance causing costly production downtime
- Unstable air pressure affecting automated production lines
How KOA Series Secures Your Production
- Maximized isentropic efficiency to cut energy costs
- Physical oil-air separation for certified Class 0 air
- Simple mechanical structure reduces wearing parts
- Siemens-driven precision pressure regulation
Engineered for High-Demand Sectors
The KOA Series is the preferred choice for massive air volume requirements where 100% air purity and uninterrupted supply are mission-critical.
KOA Series Performance Selection Table
Use this data for initial project planning and bidding support. For customized pressure or higher altitude adjustments, please contact our technical team.
| Series | Capacity Range | Discharge Pressure | Main Motor Power | Voltage | Base Size | Weight |
|---|---|---|---|---|---|---|
| KOA | 25–100 m³/min | 0.8–11 bar(g) | 100–600 kW | 380V / 3kV / 6kV / 10kV · 50Hz · 3Ph | 3400×2200 mm | 7000–8000 kg |
| KOS | 100–240 m³/min | 0.8–16 bar(g) | 300–1350 kW | 380V / 3kV / 6kV / 10kV · 50Hz · 3Ph | 4000×2300 mm | 9000–11000 kg |
| KOT | 200–400 m³/min | 0.8–11 bar(g) | 600–2000 kW | 3kV / 6kV / 10kV · 50Hz · 3Ph | 5000×2300 mm | 16000–20000 kg |
| KOL | 400–1500 m³/min | 0.8–25 bar(g) | 1500–6000 kW | 3kV / 6kV / 10kV · 50Hz · 3Ph | 12000×6500 mm | 20000–70000 kg |
1. Why KOA Centrifugal?
The Strategic Choice for Large-Scale Industrial Power The KOA Series is engineered for 24/7 continuous duty, offering a high-efficiency alternative to screw compressors for large-flow requirements.
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100% Oil-Free: Certified Class 0 purity via non-contact labyrinth seals.
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Maximum Efficiency: Saves up to 15% energy in large-demand scenarios.
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Low Maintenance: Fewer wear parts ensure a lower Total Cost of Ownership (TCO).
2. Design Excellence
7th Generation Turbine Technology Aerospace-grade engineering ensures maximum reliability and peak aerodynamic performance.
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Titanium Impellers: Five-axis CNC machined 3D back-leaning design for extreme durability.
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Enhanced Stability: Horizontal split gearbox and tilting pad bearings for ultra-low vibration.
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Smart Control: Siemens PLC integration with Inlet Guide Vanes (IGV) and active anti-surge protection.
3. How It Works
4-Step Precision Compression:
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Inlet: IGV precisely regulates air intake for energy savings.
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Impeller: 7th Gen turbo stage accelerates air to high kinetic energy.
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Diffuser: Efficiently converts velocity into stable pressure.
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Cooling: Integrated multi-stage cooling ensures optimal thermal discharge.
Have Questions? Contact Us
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Frequently Asked Questions
The KOA series utilizes advanced centrifugal technology with aerodynamic impellers, achieving much higher isentropic efficiency for large-flow requirements. Compared to multi-stage screw compressors, it can reduce energy consumption by up to 10-15% in continuous large-scale operations.
Yes. The KOA series features a physical separation between the gearbox and the compression chambers. There is no oil contact during the compression process, ensuring Class 0 oil-free air, which is critical for industries like pharmaceuticals, food & beverage, and electronics.
Every KOA unit is equipped with a high-end Siemens PLC and touch-screen interface. It provides real-time monitoring of pressure, temperature, and vibration. More importantly, it features anti-surge protection and remote control capabilities, ensuring the machine operates within the optimal safety range 24/7.
Thanks to the minimal wearing parts in centrifugal technology (no rotors or valves in contact), the KOA series offers extended maintenance intervals. Major overhauls are typically required only every 8,000 to 10,000 hours, significantly lowering your total cost of ownership (TCO).
Absolutely. Our centrifugal compressors use inlet guide vanes (IGVs) and bypass valves to manage flow fluctuations. This allows the system to maintain high efficiency even at partial loads, preventing energy waste during periods of lower air demand.
To meet global industrial standards, we offer high-voltage motor options (3KV, 6KV, 10KV) and standard voltages (380V-460V). All motors are IE3/IE4 high-efficiency rated, ensuring the entire drive train is optimized for power savings.
Yes. We have specifically designed the cooling and filtration systems for extreme conditions. The KOA series is widely used in Middle Eastern and Southeast Asian markets, maintaining stable performance in ambient temperatures up to 45-50°C.
