Kotech KOE Series Rotary Screw Air Compressor: High-Efficiency & Reliable Industrial Air Solutions (7.5-355kW)
The KOE Series features high-performance rotary screw technology with premium air ends and IE3/IE4 motors. Designed for 24/7 industrial duty, it offers the perfect balance of reliable air supply and low power consumption.
Standard lead time: 2-4 weeks. Our engineers provide customized energy-saving analysis for your specific factory requirements.
Engineered for Maximum Factory Uptime
With a focus on reducing Specific Power (kW/m³/min), the KOE series delivers consistent performance even in high-temperature environments.
Why KOE Series is the Proven Choice for Heavy-Duty Industry
Built for continuous 24/7 operation in the toughest environments. The KOE series combines a high-precision air end with an advanced oil-injection cooling system, ensuring peak thermal stability and maximum volumetric efficiency for your factory's daily power needs.
Common Frustrations with Standard Industrial Compressors
- High operational downtime due to poor cooling or frequent component failure.
- Skyrocketing electricity bills from inefficient motor performance.
- Short lifespan of rotors in dusty or high-heat factory environments.
- Complex maintenance procedures that require expensive specialized labor.
The KOE Series: Engineered for Stability & Savings
- Rugged Reliability: Oil-injected lubrication protects the air end against wear and corrosion.
- Proven Energy Efficiency: IE3 high-efficiency motors come standard to lower your TCO.
- User-Friendly Maintenance: All consumable parts (filters/separators) are positioned for quick access.
- Global Technical Support: Robust design that is easy to service with locally available parts.
Engineered for High-Demand Environments
From precision manufacturing to heavy-duty mining, the KOE series provides a steady, reliable air supply. Its robust oil-injected design ensures optimal cooling and lubrication, making it the go-to workhorse for industries that require maximum uptime and operational efficiency.
KOE Series Oil-Injected Screw Air Compressor Data
Compare technical metrics across our KOE range to find the ideal match for your factory's air demand. All models are engineered for continuous 24/7 industrial service, featuring optimized power consumption and high-reliability air ends. If you require a custom pressure range or VSD configuration, please contact our engineering team for a detailed proposal.
| Model | Air delivery(m³/min)-7.5Bar | Air delivery(m³/min)-8.5Bar | Air delivery(m³/min)-10Bar | Air delivery(m³/min)-13Bar | Outlet connection-BSPT | Dimension-mm | Noise-d(BA) | Weight-Kg |
|---|---|---|---|---|---|---|---|---|
| KOE-2.2 | 0.43 | 0.39 | 0.34 | 0.3 | 3/4” | 750600650 | 61 | 156 |
| KOE-2.2VSD | 0.19 ~0.43 | 0.18 ~0.39 | 0.15 ~0.34 | 0.14 ~0.3 | 3/4” | 750600650 | 61 | 156 |
| KOE-4 | 0.59 | 0.56 | 0.44 | 0.34 | 3/4” | 750600650 | 61 | 156 |
| KOE-4VSD | 0.27 ~0.59 | 0.25 ~0.56 | 0.20 ~0.44 | 0.15 ~0.34 | 3/4” | 750600650 | 61 | 156 |
| KOE-7.5 | 1.2 | 1 | 0.9 | 0.82 | 3/4” | 855550807 | 61 | 156 |
| KOE-7.5VSD | 0.54 ~1.2 | 0.45 ~1 | 0.41 ~0.9 | 0.37 ~0.82 | 3/4” | 855550807 | 61 | 254 |
| KOE-11 | 1.82 | 1.7 | 1.52 | 1.35 | 1” | 10146901190 | 63 | 317 |
| KOE-11VSD | 0.82 ~1.82 | 0.77 ~1.7 | 0.68 ~1.52 | 0.61 ~1.35 | 1” | 10146901190 | 63 | 322 |
| KOE-15 | 2.5 | 2.3 | 2.1 | 1.8 | 1” | 10146901190 | 63 | 350 |
| KOE-15VSD | 1.13 ~2.5 | 1.04 ~2.3 | 0.95 ~2.1 | 0.81 ~1.8 | 1” | 10146901190 | 63 | 355 |
| KOE-18 | 3.2 | 3 | 2.7 | 2.4 | 1-1/4” | 12507731200 | 63 | 453 |
| KOE-22 | 3.9 | 3.7 | 3.2 | 2.8 | 1-1/4” | 12507731200 | 63 | 480 |
| KOE-18VSD | 1.44 ~3.2 | 1.35 ~3 | 1.22 ~2.7 | 1.08 ~2.4 | 1-1/4” | 10008001330 | 63 | 458 |
| KOE-22VSD | 1.76 ~3.9 | 1.67 ~3.7 | 1.44 ~3.2 | 1.26 ~2.8 | 1-1/4” | 10008001330 | 63 | 485 |
| KOE-30 | 5.4 | 5 | 4.6 | 4 | 1-1/4” | 14509231270 | 67 | 669 |
| KOE-37 | 6.6 | 6.3 | 5.6 | 4.9 | 1-1/4” | 14509231270 | 67 | 669 |
| KOE-45 | 8.3 | 7.7 | 7.2 | 6.4 | 1-1/4” | 14509231270 | 67 | 702 |
| KOE-30VSD | 2.43 ~5.4 | 2.25 ~5 | 2.07 ~4.6 | 1.80 ~4 | 1-1/4” | 8439441521 | 67 | 674 |
| KOE-37VSD | 3.06 ~6.8 | 2.93 ~6.5 | 2.61 ~5.8 | 2.30 ~5.1 | 1-1/4” | 8439441521 | 67 | 674 |
| KOE-45VSD | 3.74 ~8.3 | 3.47 ~7.7 | 3.24 ~7.2 | 2.88 ~6.4 | 1-1/4” | 8439441521 | 67 | 7110 |
| KOE-55 | 10.3 | 10.1 | 8.4 | 7.6 | 2” | 175012001900 | 72 | 458 |
| KOE-75 | 14 | 12.8 | 11.8 | 10.6 | 2” | 175012001900 | 75 | 1480 |
| KOE-55VSD | 4.64 ~10.3 | 4.55 ~10.1 | 3.78 ~8.4 | 3.42 ~7.6 | 2” | 160012001900 | 72 | 1535 |
| KOE-75VSD | 6.30 ~14 | 5.76 ~12.8 | 5.31 ~11.8 | 4.77 ~10.6 | 2” | 160012001900 | 75 | 1540 |
| KOE-90 | 16.4 | 15.3 | 13.8 | 12.4 | 2” | 205015001850 | 75 | 1491 |
| KOE-110 | 21 | 20 | 19 | 15.3 | DN80 | 205015001850 | 78 | 2250 |
| KOE-90VSD | 7.38 ~16.4 | 6.89 ~15.3 | 6.21 ~13.8 | 5.58 ~12.4 | 2” | 205015001850 | 75 | 1650 |
| KOE-110VSD | 10.17 ~22.6 | 9.00 ~20 | 8.55 ~19 | 6.89 ~15.3 | DN80 | 205015001850 | 78 | 2410 |
| KOE-132 | 25.2 | 23.2 | 21 | 18.8 | DN80 | 278016701850 | 78 | 2450 |
| KOE-132VSD | 11.34 ~25.2 | 10.44 ~23.2 | 9.45 ~21 | 8.46 ~18.8 | DN80 | 278016701850 | 78 | 2610 |
| KOE-160 | 29.2 | 27.9 | 24.6 | 21.9 | DN80 | 278016701850 | 78 | 2900 |
| KOE-160VSD | 13.14 ~29.2 | 12.56 ~27.9 | 11.07 ~24.6 | 9.86 ~21.9 | DN80 | 278016701850 | 78 | 3220 |
| KOE-185 | 32.6 | 30.4 | 27.6 | 25.3 | DN80 | 278016701850 | 78 | 3480 |
| KOE-185VSD | 14.67 ~32.6 | 13.68 ~30.4 | 12.42 ~27.6 | 11.39 ~25.3 | DN80 | 278016701850 | 78 | 3720 |
| KOE-200 | 35.3 | 33.87 | 30.3 | 27.7 | DN100 | 460021002270 | 85 | 4130 |
| KOE-200VSD | 15.89 ~35.3 | 15.24 ~33.87 | 13.64 ~30.3 | 12.47 ~27.7 | DN100 | 460021002270 | 85 | 4450 |
| KOE-220 | 47.5 | 44.5 | 38.7 | 34.2 | DN125 | 460021002270 | 85 | 5020 |
| KOE-220VSD | 21.38 ~47.5 | 20.03 ~44.5 | 17.42 ~38.7 | 15.39 ~34.2 | DN125 | 60021002270 | 85 | 5340 |
| KOE-250 | 50.1 | 48.1 | 43.29 | 37.5 | DN125 | 460021002270 | 85 | 5020 |
| KOE-250VSD | 22.55 ~50.1 | 21.65 ~48.1 | 19.48 ~43.29 | 16.88 ~37.5 | DN125 | 460021002270 | 85 | 5340 |
| KOE-315 | 65 | 58.1 | 52.29 | 45.2 | DN150 | 460021002400 | 85 | 7760 |
| KOE-315VSD | 29.25 ~65 | 26.15 ~58.1 | 23.53 ~52.29 | 20.34 ~45.2 | DN150 | 460021002400 | 85 | 8160 |
| KOE-355 | 68 | 64 | 57 | 51 | DN125 | 460021002400 | 88 | 10200 |
| KOE-355VSD | 30.60 ~68 | 28.80 ~64 | 25.65 ~57 | 22.95 ~51 | DN125 | 460021002400 | 88 | 10200 |
1. The KOE Energy Saving Standard
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IE4 Ultra-High Efficiency Motors: Powered by industry-leading IE4 drive motors, our systems maximize energy output while minimizing input.
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1:1 Direct Drive Technology: Our unique 1:1 design eliminates the power loss typically associated with gear or V-belt transmissions. Every watt of energy is put to work.
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Advanced Radial Fans: Fully compliant with EU Directive 327/2011, our fans provide superior airflow and high residual thrust, allowing exhaust to be ducted directly without auxiliary fans.
2. Intelligent Thermal Management & Heat Recovery
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Up to 96% Energy Recycling: Most electrical input is converted to heat; we don’t let it go to waste. Our system recycles up to 96% of waste heat to produce hot water for industrial use.
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System Stability: By absorbing excess heat, the system prevents high-temperature “tripping,” reduces equipment failure rates, and ensures a safe, continuous air supply.
3. Industry 4.0 Smart Monitoring Platform
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Digital Twin Visualization: Experience your data through a 3D real-time rendering engine. Our platform provides a visual representation of your equipment’s health, from temperature to voltage.
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Multi-Protocol IoT Integration: Supports MODBUS-RTU, CAN, PROFINET, and more. Connect via 4G, LORA, or Ethernet for remote access and control from anywhere in the world.
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Sequential Control: Manage up to 4 compressors simultaneously without additional hardware, optimizing power distribution and lowering operating costs.
## Engineering Excellence: Built for the Harshest Environments
| Feature | Technical Advantage | User Benefit |
| Separate Control Cabinet | Frequency drive is housed in its own cabinet with independent cooling. | Prevents heat interference, extending the lifespan of sensitive electronics. |
| Clean-from-Outside Cooler | Externally installed coolers are easily accessible for cleaning. | High operational reliability and effortless maintenance. |
| Cold Compressed Air | Integrated aftercooling and centrifugal separation. | Removes condensate without energy loss, protecting downstream equipment. |
| High Efficiency Controller | PID automatic adjustment of load rates and imbalance protection. | Prevents phase reversal and overload, ensuring 24/7 autonomous safety. |
Frequently Asked Questions
The KOE series is equipped with high-efficiency IE3 or IE4 motors (depending on the model) and premium air ends. By optimizing the rotor profile and reducing internal pressure drops, it delivers a high Specific Power, helping factories reduce annual electricity costs by 10-20% compared to older units.
Reliability is our core. The series features a robust heavy-duty design, including a high-surface-area cooling system and advanced filtration. The intelligent control system monitors all vital parameters in real-time, providing automatic alerts and safety shutdowns to prevent downtime in harsh industrial environments.
We designed the KOE series with "Easy-Access" in mind. All consumable parts like air filters, oil filters, and separators are positioned behind large hinged doors. Service intervals are extended to 4,000–8,000 hours, significantly lowering your long-term maintenance labor and parts costs.
Yes. Every unit is equipped with an advanced PLC controller featuring a multi-language interface. It supports real-time pressure adjustment, maintenance reminders, and fault history logs. It also supports RS485 communication, allowing for remote monitoring and multi-unit linkage control.
Not at all. The KOE series utilizes a fully enclosed sound-dampening canopy and vibration isolators for the motor and air end. This design ensures noise levels remain within OSHA-compliant industrial standards, allowing for installation closer to the point of use.
Absolutely. Kotech provides global voltage support (e.g., 220V/380V/415V/460V at 50/60Hz). We also offer customized solutions for high-temperature environments, high-altitude installations, or specific IP55/IP65 protection ratings based on your site conditions.
We maintain a steady stock of core components to ensure a fast lead time, typically 2-4 weeks. The KOE series comes with a standard 1-year warranty on the whole machine and a 2-year warranty on the air end, backed by Kotech’s global technical support and genuine spare parts availability.
