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KROF OIL-FREE TWO-STAGE
Rotary Compressors

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KROF TWO-STAGE OIL-FREE
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, oil-free air solutions have 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.

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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With its innovative design and practical functionality, the Kaishan two-stage, oil-free air compressor is a standout choice for businesses looking to optimize their operations with easy maintenance 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
MODEL POWER FLOW (CFM) SOUND dBA WEIGHT DIMENSIONS (LxWxH)
  HP 100 psi 125 psi 150 psi   lbs kg in mm Connection Size
KROF-30 30                  
KROF-40 40       (in development)          
KROF-50 50                  
KROF-60 60 341 299 274 78 7960 3488 121x73x87 3070x1860x2210 DN 65
KROF-75 75 405 356 326 78 7780 3529 121x73x87 3070x1860x2210 DN 65
KROF-100 100 535 470 430 78 7840 3556 121x73x87 3070x1860x2210 DN 65
KROF-125 125 561 554 492 84 9860 4472 136x76x89 3452x1930x2260 DN 80
KRSP-150 150 689 681 602 84 9940 4509 136x76x89 3452x1930x89 DN 80
KRSP-200 200 898 892 823 84 10220 4636 136x76x89 3452x1930x2260 DN 80
KRSP-250 250                  
KRSP-300 300       COMING MID-2025!          
KRSP-350 300                  
KRSP-400 400                  
KROF 50 HZ
MODEL POWER FLOW (m³/min) SOUND WEIGHT DIMENSIONS (LxWxH)
  kW 7 bar 8 bar 10 bar dBA  lbs kg in mm Connection Size
KROF-22 22                  
KROF-30 30       (in development)          
KROF-37 37                  
KROF-45 45 9.7 8.5 7.8 78 7960 3488 121x73x87 3070x1860x2210 DN 65
KROF-55 55 11.5 10.1 9.2 78 7780 3529 121x73x87 3070x1860x2210 DN 65
KROF-75 75 15.1 13.3 12.2 78. 7840 3556 121x73x87 3070x1860x2210 DN 65
KROF-90 90 14.3 16.1 14.8 84 9860 4472 136x76x89 3452x1930x2260 DN 80
KRSP-110 110 17.7 19.5 18.1 84 9940 4509 136x76x89 3452x1930x89 DN 80
KRSP-132 132 21.1 23.3 21.5 84 10105 4584 136x76x89 3452x1930x2260 DN 80
KRSP-145 145 26.3 24.6 22.2 84 10105 4584 136x76x89 3452x1930x2260 DN 80
KRSP-160 160 25.0 27.0 25.8 84 10220 4636 136x76x89 3452x1930x2260 DN 80
KRSP-190 160                  
KRSP-225 160       COMING MID-2025!          
KRSP-260 160                  
KRSP-315 160                  
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.