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Tough and ready for anything

Our bare block blowers provide maximum flexibility. The OMEGA series blowers with their three-lobe rotors minimize pulsation and include a wide range of rotary lobe blowers for stationary and mobile applications. They are manufactured in state-of-the-art, climate-controlled CNC production facilities and are rigorously tested at full load.
OMEGA Series Bare Rotary Lobe Blowers
Unit of Measure
Items OMEGA Series Bare Rotary Lobe Blowers
1567
OMEGA Series 21P Model 176 Cubic Feet Per Minute (cfm) Maximum Flow Delivery Bare Rotary Lobe Blower
List Price QUOTE
OMEGA Series Bare Rotary Lobe Blowers
1568
OMEGA Series 22P Model 223 Cubic Feet Per Minute (cfm) Maximum Flow Delivery Bare Rotary Lobe Blower
List Price QUOTE
OMEGA Series Bare Rotary Lobe Blowers
1569
OMEGA Series 23P Model 297 Cubic Feet Per Minute (cfm) Maximum Flow Delivery Bare Rotary Lobe Blower
List Price QUOTE
OMEGA Series Bare Rotary Lobe Blowers
1570
OMEGA Series 24P Model 374 Cubic Feet Per Minute (cfm) Maximum Flow Delivery Bare Rotary Lobe Blower
List Price QUOTE
OMEGA Series Bare Rotary Lobe Blowers
1571
OMEGA Series 41P Model 438 Cubic Feet Per Minute (cfm) Maximum Flow Delivery Bare Rotary Lobe Blower
List Price QUOTE
Description N/A Superior Quality and Performance

Kaeser's OMEGA line of positive displacement blowers has a well-earned reputation for unmatched efficiency and reliability. OMEGA blowers are designed for operation in a wide range of conditions (from 15 psig to 15" HgV) with reduced pulsation and lower noise levels. When it comes to blower design and construction, Kaeser never compromises on quality. Our rigid quality control and testing procedures ensure optimum performance and durability
Brands N/A Kaeser Compressors
Model N/A 21P N/A 22P N/A 23P N/A 24P N/A 41P
Maximum Flows Delivery N/A 176 cfm N/A 223 cfm N/A 297 cfm N/A 374 cfm N/A 438 cfm
Maximum Speed N/A 6200 rpm N/A 6000 rpm N/A 5800 rpm N/A 5450 rpm N/A 5000 rpm
Maximum Pressure Drop N/A 15 psig N/A 15 psig N/A 15 psig N/A 11.6 psig N/A 15 psig
Maximum Vacuume Pressure Drop N/A 15 inHgV
Maximum Drive Power N/A 13 hp N/A 17 hp N/A 20 hp N/A 21 hp N/A 31 hp
Length1 N/A 12-3/4 in N/A 14-3/16 in N/A 16-5/16 in N/A 18-7/8 in N/A 15-9/16 in
Width N/A 8-1/8 in N/A 9-1/8 in N/A 10-1/8 in N/A 8-1/8 in N/A 11-13/16 in
Height N/A 6-11/16 in N/A 6-11/16 in N/A 6-11/16 in N/A 6-11/16 in N/A 9-7/16 in
Connection Flange (DN PN 6) N/A 50 mm N/A 65 mm N/A 65 mm N/A 80 mm N/A 80 mm
Adapter Connection2 N/A 2 in. National Pipe Thread (NPT) N/A 2-1/2 in. National Pipe Thread (NPT) N/A 2-1/2 in. National Pipe Thread (NPT) N/A 3 in. National Pipe Thread (NPT) N/A 3 in. National Pipe Thread (NPT)
Weight N/A 71 lb N/A 79 lb N/A 93 lb N/A 112 lb N/A 190 lb
Advantages N/A
  • Long service life:
    Heavy-duty cylinder roller bearings completely absorb the continuously changing radial gas-forces that are exerted on the rotors. Service life of up to 100,000 hours is possible with the included bearings.
  • High flow rate = High-efficiency
    Thanks to precision manufacturing we achieve minimal flank clearance, which results in reduced capacity losses through gap losses.
Economical - Thanks to Low Life Cycle Costs N/A Our comprehensive approach to life cycle cost management: Superior efficiency, easy operation, service-friendliness, and the latest in technology to keep performance high well into the future.
OMEGA P Rotary Lobe Blower N/A Field of application

Whether stationary or mobile, and in both vacuum and pressure operation – our rotary blowers ensure excellent performance for a wide range of applications. For example:
  • In water management (e.g. for aeration of sedimentation tanks)
  • Forced air generation (drying, cooling, separation...)
  • Combustion air supply
  • For pneumatic conveying of powdered and granular bulk materials
Rotary Lobe Blowers for Nitrogen Conveying Model OMEGA PN N/A Field of application

Some bulk materials have to be conveyed in a nitrogen atmosphere within a closed system.
Leakage from system components - including rotary blowers - must therefore be kept to an absolute minimum.
PN series blowers were specially developed for these applications. They are available with three different drive shaft rotary lead-through seals, including a wear-free sliding ring seal.
Vacuum Blower with Pre-inlet Cooling: Model OMEGA PV N/A Field of application
  • For use in low vacuum ranges up to 1.5 psi (a) or 13 psig pressure differential.
  • Vacuum intake capacity: up to 4238 cfm
Application examples
  • Mobile use, e.g. in tanker trucks and suction vehicles.
How it works

If vacuum (yellow) occurs between the rotor and the casing, ambient air (blue) enters the blower block via so-called pre-inlet channels as the rotors continue to turn.

The two volume flows subsequently combine and the arising compression heat is dissipated throughout a much larger volume of trapped air. This approach therefore achieves the same discharge temperatures that are produced by normal blower blocks.
Vapor Compression Blowers: Model OMEGA B N/A Field of application
  • Specially designed for steam compression in vacuum operations in combination with water injection cooling.
Options
  • Rotors and block casings: cast stainless steel or chromium-nickel cast iron.
  • Several options for internal seals for rotary transmission lead-through (corrosion-resistant and wear-free).
  • Various special seals for drive shaft rotary lead-through for different working environments.
  • Conveying direction: Vertical, from top to bottom (adjustable for different set-ups).
Rotary Lobe Vacuum Pumps: WVC Type N/A Field of application
  • For fine-vacuum applications
  • Nominal flow capacity up to 4002 cfm
  • Dry compression
  • For use in pumping units in conjunction with a booster pump for increased suction power and vacuum pressure.
Reduced pumping time through frequency converter.
  • The optional frequency converter allows simultaneous activation of a rotary lobe vacuum pump and booster pump at atmospheric pressure.
OMEGA P Rotary Lobe Blowers -How They work N/A As the rotors turn, air in the inlet is trapped between the rotor lobes and the casing. When the advancing lobe reaches the lip of an eccentric bore hole in the casing, this "pre-inlet channel" allows gradual equalization of pressure between the trapped inlet air and the air drawn in from the discharge side. Pressure equalization in two-lobe blocks occurs abruptly as the advancing lobe crosses the lip of the discharge port. This is the main reason why three-lobe blocks generate significantly less pulsation than two-lobe blocks. The air is then finally pushed out against the pressure in the pipe work.
Applications N/A Kaeser's OMEGA Series blower blocks are used in a wide range of applications including pneumatic conveying, drinking and wastewater treatment (filter cleaning and aeration), liquid homogenization, forced air systems for combustion equipment, and much more. Whatever your needs are, you can trust that Kaeser's blowers will meet them and exceed your expectations.
Additional Information N/A
  • Highly versatile rotary blowers - in stationary and mobile versions, suitable for both vacuum and pressure operation - for air and nitrogen conveying applications (OMEGA P and PN).
  • Blower with primary components made from chromium-nickel alloy for vacuum distillation / process water recycling (OMEGA B).
  • Vacuum blowers with pre-inlet cooling - suitable for alternating vacuum and pressure operation in tanker trucks and suction vehicles (OMEGA PV).
  • Rotary lobe vacuum pumps for fine vacuum applications (OMEGA WVC) in combination with a booster pump.
Innovation you can trust
With a cutting edge research and development team committed to building industry-leading products, Kaeser continues to deliver better solutions to meet our customers' process air needs. Kaeser's expertise and world-wide reputation for superior reliability and efficiency offer superior performance and peace of mind.

Versatile and easy installation
Omega blowers can be mounted horizontally or vertically to suit the specific application and are easily installed into a machine's design. Additionally, our design and applications team is always ready to assist with proper selection and installation. Omega blocks are also available as complete blower packages with integrated controls and a suite of system sensors for the best in efficiency, monitoring, and reliability.

Heavy duty design
All OMEGA blowers share a durable design that includes rigid casings, cast bearing supports, and one-piece rotors. The substantial casing construction and proprietary port design ensure smooth, quiet operation at all speeds. The precision machined, case-hardened, straight-cut timing gears and oversized cylindrical roller bearings provide years of reliable service. Piston ring seals ensure optimum internal sealing and oil-free air.

Rugged reliability
Kaeser's blower blocks meet our rigorous "built for a lifetime" standard. Designed and built with Kaeser's generations of manufacturing experience, you can rest assured that they will continue to deliver the exceptional reliability you expect from Kaeser. As a matter of fact, each bare blower comes with an unbeatable 24-month warranty and a 60-month warranty when installed in one of Kaeser's blower packages.
Note N/A Specifications are subject to change without notice.
  • 1 Without drive shaft
  • 2 Optional