KROF OIL-FREE TWO-STAGE
Rotary Compressors

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KROF OIL-FREE TWO-STAGE
Rotary Compressors

CONTACT US

The KROF two-stage oil-free rotary screw air compressor represents Kaishan’s commitment to catering to the growing demand for oil-free air across various industries. The KROF is designed to provide uncontaminated, highly efficient, reliable air with a reduced environmental footprint. As industries like pharmaceuticals, food and beverage, and electronics manufacturing increasingly require pure air, the need for oil-free air solutions has become more critical. The KROF offers a solution that not only meets ISO Class 0 but also ensures enhanced performance and lower operational costs. This makes it an ideal choice for businesses looking to optimize their air compression systems while adhering to environmental and quality standards.

The KROF oil-free air compressor exemplifies cutting-edge engineering with its two-stage design, where each stage is powered by a pinion gear driven by a singular, robust bull gear. This gear setup is efficiently coupled to a single, high-efficiency drive motor, embodying a design that is both simple and effective. This streamlined configuration not only enhances energy efficiency but also significantly improves reliability.
Optimized for superior performance over a wide range of horsepower levels, the KROF stands out in its category. A notable feature of our product is the airend, which is designed and manufactured in the USA. This allows us to uphold the highest quality standards in our production process, carried out in our state-of-the-art facility in Loxley, Alabama.
The KROF oil-free air compressor is the perfect solution for various industrial applications, particularly those demanding ISO Class 0 oil-free air. Its blend of simplicity, efficiency, and rigorous quality control makes it a top choice in its field.

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KROF Air Compressor Benefits
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The drive provides a soft start and the ability to operate efficiently through the compressor’s capacity range by matching flow to demand, all while maintaining a high level of pressure control. By eliminating wasted energy, you may see cost savings as high as 35% or more.
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We design our compressors to have world-class reliability so that you can accomplish your work without the fear of your compressor breaking down or otherwise impeding your operations.
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Two-stage Kaishan compressors provide a higher level of efficiency than single-stage compressors, making them more useful for a variety of tasks. Our team has worked to develop high-quality two-stage air compressors that lower energy usage to save you money.
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Engineered for maximum performance, this compressor features a two-stage compression process that significantly enhances efficiency. The first stage initiates compression, followed by an intercooling phase that lowers the air temperature before entering the second stage. This process reduces the work required in the second stage, leading to lower energy consumption and increased efficiency. Moreover, its oil-free design ensures that the compressed air is free of contaminants, making it ideal for industries where air purity is paramount. With its innovative design and practical functionality, the Kaishan Oil-Free Two-Stage Air Compressor is a standout choice for businesses looking to optimize their operations while minimizing environmental impact.
KROF Air Compressor Benefits
Energy Savings

Engineered for maximum performance, this compressor features a two-stage compression process that significantly enhances efficiency. The first stage initiates compression, followed by an intercooling phase that lowers the air temperature before entering the second stage. This process reduces the work required in the second stage, leading to lower energy consumption and increased efficiency. Moreover, its oil-free design ensures that the compressed air is free of contaminants, making it ideal for industries where air purity is paramount. With its innovative design and practical functionality, the Kaishan Oil-Free Two-Stage Air Compressor is a standout choice for businesses looking to optimize their operations while minimizing environmental impact.

Outstanding Reliability

We design our compressors to have world-class reliability so that you can accomplish your work without the fear of your compressor breaking down or otherwise impeding your operations.

High Efficiency

Two-stage Kaishan compressors provide a higher level of efficiency than single-stage compressors, making them more useful for a variety of tasks. Our team has worked to develop high-quality two-stage air compressors that lower energy usage to save you money.

Easy Maintenance

We design our two-stage oil-free compressors with easy access for service as well as a specialized sound-deadening enclosure, the latter of which minimizes operating noise. Quit wasting valuable time maintaining complicated equipment and get back to the work you love with KROF air compressors.

Air Compressors Engineered to Deliver Industry-Leading Performance

Our compressors are very durable and reliable because of a range of features, including:

A sound-deadening enclosure that keeps noise to a minimum and reduces the risk of occupational injury
A range of standard safety features, such as guards for all rotating components, UL and NEC designed electrical components, and an internal spill-containment system
A Modbus compatible control system that allows for sequencing and remote monitoring of system performance, while providing alerts and protecting the unit in the event of a fault
Centrifugal fans that deliver even airflow and more efficient cooling
Our exclusive ‘Ultra Web’ air filter removes particles as small as five microns, keeping your compressor from ingesting dirt and wear particles that would otherwise shorten the life of your compressor

KROF 60 HZ
 PowerFlow (CFM) WeightDIMENSIONS (LxWxH) 
ModelHP100 psi125 psi150 psiSound dBAlbskginmmConnection Size
KROF-3030(in development)
KROF-4040
KRPF-5050
KROF-60603412992747876903488121x73x873070x1860x2210DN 65
KROF-75754053563267877803529121x73x873070x1860x2210DN 65
KROF-1001005354704307878403556121x73x873070x1860x2210DN 65
KROF-1251255615544928498604472136x76x893452x1930x2260DN 80
KROF-1501506896816028499404509136x76x893452x1930x2260DN 80
KROF-20020089889282384102204636136x76x893452x1930x2260DN 80
KROF-250250         
KROF-300300    COMING MID-2025!  
KROF-350350         
KROF-400400         
KROF 50HZ
 PowerFlow (m3/min)SoundWeightDIMENSIONS (LxWxH) 
ModelkW7 bar8 bar10 bardBAlbskginmmConnection Size
KROF-2222(in development)
KROF-3030
KRPF-3737
KROF-45459.78.57.87876903488121x73x873070x1860x2210DN 65
KROF-555511.510.19.27877803529121x73x873070x1860x2210DN 65
KROF-757515.113.312.27878403556121x73x873070x1860x2210DN 65
KROF-909014.316.114.88498604472136x76x893452x1930x2260DN 80
KROF-11011017.719.518.18499404509136x76x893452x1930x2260DN 80
KROF-13213221.123.321.584101054584136x76x893452x1930x2260DN 80
KROF-14514526.324.622.284101054584136x76x893452x1930x2260DN 80
KROF-16016025.027.025.884102204636136x76x893452x1930x2260DN 80
KROF-190160         
KROF-225160    COMING MID-2025!  
KROF-260160         
KROF-315160         
Reliable Air Compression at an Accessible Price

For the past 60 years, we have developed industry leading compressed air equipment. Our decades of experience provide you with increased insight into what you and your business need at an affordable price.

We are one of the world’s largest manufacturers of compressed air equipment—including energy efficient two-stage air compressors—operating in modern, specialized manufacturing facilities. We combine highly skilled engineering with low-cost manufacturing to offer the highest value to you, our customer.

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As a leader in rotary screw air compressor solutions, we serve the needs of a wide range of industries. No matter which sector you operate in, you can turn to Kaishan for the right compressor for your needs. Reach out today to learn more about KROF air compressors and see how the Kaishan team can help you better meet your goals. Contact us today.