Rogers KNW Series Oil-Free Rotary Screw Air Compressor
Rogers KNW Series Oil-Free Air Compressors (formerly Kobelco KNW) are designed, manufactured, assembled and tested to be the longest lasting and most energy efficient oil-free, rotary screw air compressors in the world.
- Fixed Speed or VFD
- Air or Water-Cooled
- 20 - 500 HP
- 72 - 2400 SCFM
- 40 - 150 PSIG
The Rogers KNW Series is our oil-free rotary screw air compressor that is designed, engineered and assembled in Portland, Oregon.
Over 65 years of field experience in all industries has proven that the ROGERS KNW Series (formerly Kobelco KNW) rotary screw design is the preferred choice for reliability, energy efficiency and serviceability.
Two Stage Design
Heavy duty, two-stage compression module with thrust balancing for long bearing life in each stage. Designed, tested and manufactured in the USA. No other oil-free compressor manufacturer has made that commitment to the North American market.
ASTM 1144 steel rotors with exclusive PTFE coating on rotors and shafts for maximum efficiency and corrosion protection. Gears and bearings are lubricated by a unique motor driven oil pump that provides positive lubrication prior to start-up, through operation and after shutdown. This is an especially important feature for VFD models and not available on competitive offerings
Unique Design Features
Key design features ensure long air end life. All features may not be available on competitive models.
- Non contact maintenance free air and oil seals
- Thrust balance compensation
- Cooling jackets
- Dual vents to atmosphere ensure oil-free air
- Vacuum degassed thrust and radial bearings
- Premium AGMA rated gears
All models meet the requirements of NFPA 99 for use as a medical air compressor