KIMAIR KOV Series Oil-free Inverter Rotary Screw Air Compressors

Building on the proven oil-free dry-type technology of the KOE series, the KOV series integrates intelligent Variable Speed Drive (VSD). It not only delivers 100% oil-free compressed air but also enables demand-oriented supply through variable speed control. This perfectly solves the issue of lower part-load efficiency typical of oil-free compressors. The KOV series is an efficient and intelligent choice for premium applications that demand both absolute air quality and energy efficiency.

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Oil-free Inverter Rotary Screw Air Compressor

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Video Tutorial

KIMAIR KOV Series Oil-free Inverter Rotary Screw Air Compressors Principle Explanation Video

KIMAIR Core Advantages

Combined Purity and Efficiency

- Achieves significant energy savings (compared to fixed-speed oil-free models) while guaranteeing Class 0 oil-free standards.
Extremely Stable Pressure

- Variable speed control ensures minimal pressure fluctuation in the distribution network, meeting the stringent requirements of precision instruments and sensitive processes.
Extended Component Life

- Soft start and reduced no-load operation minimize mechanical shock and unnecessary wear on gears and bearings.
Intelligent Temperature Management

- Variable speed control allows for more precise fan management, optimizing cooling and further reducing operating temperatures.

Technical Specifications

Model	Motor Power		Free air delivery（m³/min）			Outlet	Weight （kg）	Dimensions （mm）
Model	（kW）	（Hp）	0.75MPa	0.85MPa	1MPa	Outlet	Weight （kg）	Dimensions （mm）
KOV75	55	75	7.0-9.1	6.5-8.0	6.0-7.5	DN65	3100	235016501950
KOV100	75	100	7.0-11.8	6.5-11.2	6.0-10.8	DN65	3200	235016501950
KOV120	90	120	7.5-14.5	7.5-13.5	6.0-12.8	DN65	3350	235016501950
KOV150	110	150	9.6-19.1	8.7-17.4	/	DN80	3750	310018002300
KOV180	132	180	11.2-22.5	10.0-20.1	/	DN80	3850	310018002300
KOV200	145	200	12.2-24.5	11.0-21.9	/	DN80	3850	310018002300
KOV220	160	220	14.25-28.5	13.1-26.2	12.2-24.4	DN80	5400	350020002300
KOV270	200	270	18.25-36.5	17.0-34.0	15.2-30.5	DN80	5600	350020002300
KOV340	250	340	22.0-44.0	20.5-41.0	19.2-38.5	DN80	5800	350020002300
KOV380	280	380	24.0-48.0	26.7-43.5	20.4-40.8	DN80	6000	350020002300
KOV420	315	420	25.4-50.8	25.3-50.6	/	DN80	6200	350020002300
KOV150W	110	150	9.5-19.3	8.9-17.5	7.7-15.8	DN80	2700	270016502000
KOV180W	132	180	9.5-22.5	9.2-20.2	8.6-18.8	DN80	2840	270016502000
KOV200W	145	200	10.6-24.7	9.2-21.9	8.6-20.5	DN80	3250	270016502000
KOV220W	160	220	14.8-29.5	14.3-26.4	14.0-24.4	DN80	4900	320018002170
KOV270W	200	270	15.7-37.5	15.6-34.2	14.1-30.5	DN80	5100	320018002170
KOV340W	250	340	19.0-44.0	18.2-41.3	16.8-38.5	DN80	5300	320018002170
KOV380W	280	380	22.5-48.2	19.2-44.0	18.8-40.8	DN80	5500	320018002170
KOV420W	315	420	25.0-50.8	25.0-50.6	/	DN80	5700	320018002170

Application Scenarios

The KOV series is the essential choice for industries that demand “zero compromise” on air quality:

- Variable load oil-free air source for electronics and semiconductor production lines

- Intermittent process air for large-scale pharmaceutical plants

- Centralized air supply systems for laboratory clusters or R&D centers

- High-end food processing stages with significant air demand fluctuations

Customer Frequently Asked Questions (FAQ)

Q: Is the energy-saving benefit of adding VSD to an oil-free compressor significant?

A: Yes, very significant. Traditional fixed-speed oil-free compressors lose efficiency quickly at part load. The KOV series operates at an efficient point by adjusting speed, achieving 15%-25% energy savings in typical variable-load, oil-free applications. This significantly reduces the operating costs of such high-demand air sources.

Q: Does the inverter affect oil-free air quality?

A: Absolutely not. The inverter controls the motor speed and is completely independent of the compression chamber's physical isolation design. The KOV series maintains its oil-free air quality through precision gear transmission and dry seals; the variable speed technology does not affect its Class 0 certification.

Why choose the KIMAIR KOV series?

- Intelligent Balance of Purity & Efficiency: Delivers significant energy savings to oil-free users for the first time without compromising oil-free safety.

- Enhanced Process Stability: Constant pressure output provides a more stable air source for precision manufacturing and experimental processes.

- Future-Ready Upgrade Path: Offers an efficiency upgrade path for users with existing oil-free needs without sacrificing air quality.

- Smart Management, Lower Hidden Costs: Soft start and reduced unloading lower grid impact and mechanical stress on the equipment.