Kobelco KNW Series air compressor brochures and product information. The heavy-duty air end design has proven itself consistently since Oil-free rotary screw Kobelco KNW air compressors are used in a variety of.

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Oil-free air is needed for critical systems such as HVAC and lab air. All oil-side piping is stainless steel and has SAE leak-free fittings.

Kobelco is a name you zeries trust. This Super Rotor design is why the Kobelco KNW Series is widely accepted as the most efficient two-stage, oil-free rotary screw air compressor on the market — not to mention that this novel new asymmetric rotor profile has the lowest power consumption per cubic foot of compressed air.

Universal Module for communication with facility management system. Fixed Speed or VFD.

Kobelco KNW Series – Rogers Machinery

We provide nationwide parts and service support through our authorized distributor network. About Rogers Machinery Company SinceRogers has provided industry with superior quality kn compressors, vacuum systems, blowers, pumps, parts, and accessories. Rogers Machinery Company, Inc. The powder coating is applied to the base, frame and enclosure.


The design increases gear and bearing life and is not offered on competitive models. VFD control provides a narrow system pressure band, reduces inrush at start-up, and allows more frequent stops and starts.

Kobelco KNW Series Oil-Free Rotary Screw Air Compressors

Sign up for our newsletter! Oil-free air required for painting, air tools, transport systems and component testing.

Oil-free air is used for critical instrument air requirements for fossil, nuclear and renewable facilities. We provide special packages for the rental market to meet demands of customers that have temporary or emergency needs for clean dry air. Required settings for pressure control, temperature alarms, and control time delays are viewable and may be modified using the touch screen. Internal turbulators provide optimum heat transfer with minimal pressure drop. The Kobelco KNW Series’ compressor air end is a heavy-duty, two-stage design in which both stages are driven by a common gear.

Leak-Free Fittings on Oil Circuit. The compressor will not operate until oil pressure is established. Air-cooled heat exchangers are made of heavy-duty aluminum with a special coating and are designed for all published operating conditions.

Kobelco KNW Series®

Heavy Duty Air End Design. Thrust balance pistons on each stage provide maximum air end life. Unloaded horsepower is guaranteed and repeatable. The valve is designed for 1, load-unload cycles and is easily serviced.


Competitors use carbon rings with single vents and no thrust balance. The valve is a positive-closing disc type with orifices, using spring and air pressure to activate.

The Kobelco KNW Series can be custom built to your specifications and is also available as a standard design package.

Sign up for our newsletter! Simply stated, our KNW Series delivers percent oil-free air for all critical, specialized applications. We also provide air system energy audits, air dryers, filters, receivers, and sequencers. Messages are sent to direct the operator for service, pre-alarms, and alarms, and will be shown when necessary. All values are also available for remote monitoring.

Kobelco KNW Series | World Leader in Oil-free, Rotary Screw Air Compressors

The labyrinth type seal used on the drive end ensures leak-free operation. State of the art IO-Link Communication. Standard air cooled heat exchangers.