The Kobelco KNW Series oil-free rotary screw air compressor is designed, manufactured, assembled, and tested in the United States and is delivered ready for operation. The two-stage rotary screw compressor provides completely oil-free air because no oil is allowed in the compression chambers. A factory trained field representative will supervise installation and start-up. This same representative will also train your maintenance personnel in the operation and maintenance of the assembly. Our commitment is to provide a trouble free, reliable installation of which we can both be proud. Since 2010 these products have been constructed in a “green” facility that utilizes over 1000 solar panels to produce 52% of the company’s electricity; highlighting the company’s commitment to energy conservation and the environment. From their commitment to the environment to their commitment to customer service, you can be sure that your Kolbeco Oil Free Rotary Screw Air-Compressor will meet your compressed air needs.
Kobelco Oil Free Rotary Screw Air Compressors
BENEFITS OF OIL FREE COMPRESSORS
- Eliminates the cost to collect and dispose of oil laden condensate.
- Avoids the compressor oil separator element and the downstream filter replacement cost.
- Avoids the the extra energy cost to overcome the pressure drop in the compressor oil separator and downstream filtration. Oil-free compressors use less energy due to lower discharge pressure.
- Stops the contamination of desiccant in regenerative type air dryers.
- Eliminates the cost of make-up oil that must be added to oil-flooded compressors.
- Reduces the maintenance associated with regular oil changes. Oil-free compressors require the oil to be changed annually. Oil-flooded compressors generally require two or more oil changes per year because the ambient air is mixed with the oil. This causes contamination and reduced oil life during high ambient conditions.
- Oil-free compressors have the added value of low unloaded horsepower. They unload within two seconds of command to unload and consume approximately 18% of full load horsepower when unloaded. This results in significant energy savings compared to oil flooded compressors.
Available in Variable Speed and Fixed Speed Options
Our Kobelco Products
Air Cooled
Kobelco air cooled compressors employ a new patented Super Rotor design, which is acknowledged to be the most efficient, two-stage, oil-free rotary screw air compressor on the market. This new asymmetric rotor profile provides the lowest power consumption per cubic foot of compressed air.
Air Cooled
Water Cooled
The compressor air-end is a heavy-duty, two-stage design with each stage driven by a common gear. These components are arranged in a single modular design to form a compact unit which is mounted on vibration isolators to a structural steel base. No special foundation considerations are required.
Water Cooled
Fixed Speed
Precision machined timing gears are mounted on each rotor shaft to maintain accurate clearances between the rotors. The bearings are anti-friction type for long life and smooth operation. The electric motor is directly coupled to the input drive shaft through a flexible coupling.
50 Hz:
• H Series Air Cooled Two Stage, 24 to 2567 m3/hr
• H Series Water Cooled Two Stage 124 to 3572 m3/hr
60Hz:
• H Series Air Cooled Two Stage, 72 to 1552 cfm
• L Series Air Cooled Two Stage, 73 to 1559 cfm
• H Series Water Cooled Two Stage, 72 to 2155 cfm
• L Series Water Cooled Two Stage, 73 to 2389 cfm
Low Pressure, Single Stage, Fixed Speed -60hz
• S Series Air-Cooled Single Stage 35 psig max.
• S Series Water-cooled Singe Stage 35 psig max.
• H Series Air Cooled Two Stage, 24 to 2567 m3/hr
• H Series Water Cooled Two Stage 124 to 3572 m3/hr
60Hz:
• H Series Air Cooled Two Stage, 72 to 1552 cfm
• L Series Air Cooled Two Stage, 73 to 1559 cfm
• H Series Water Cooled Two Stage, 72 to 2155 cfm
• L Series Water Cooled Two Stage, 73 to 2389 cfm
Low Pressure, Single Stage, Fixed Speed -60hz
• S Series Air-Cooled Single Stage 35 psig max.
• S Series Water-cooled Singe Stage 35 psig max.
Fixed Speed
Variable Speed
The state-of-the-art programmable logic controller maximizes operating efficiency and versatility. Kobelco’s sound attenuated enclosure assures quiet operation. Doors are hinged and pinned allowing easy removal for inspection and maintenance.
60 Hz:
• H Series VFD, Air-Cooled Two Stage 60 to 1559 cfm
• H Series VFD, Water Cooled Two Stage 60 to 2155 cfm
• L Series VFD Air-Cooled Two Stage 60 to 1559 cfm
• L Series VFD Water Cooled Two Stage 60 to 2155 cfm
60 Hz:
• H Series VFD, Air-Cooled Two Stage 60 to 1559 cfm
• H Series VFD, Water Cooled Two Stage 60 to 2155 cfm
• L Series VFD Air-Cooled Two Stage 60 to 1559 cfm
• L Series VFD Water Cooled Two Stage 60 to 2155 cfm
Variable Speed