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Side Channel Blowers

Our products Operating principle
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Types of side channel blowers

SAMOS side channel blowers are available in single- and two-stage versions. In single-stage side channel blowers, the pumped medium is discharged after one rotation, while two-stage versions convey it to the second stage after one rotation. This leads to higher differential pressures.

The die-cast aluminum or cast-iron construction makes SAMOS very robust. The impeller is made of aluminum alloy and is dynamically balanced. Thus, our side channel blowers generate very low vibration and noise levels. The large variety of sizes provides the opportunity to choose the perfect SAMOS for any application, both technically and economically.

Product series
Nominal pumping speed
Version
SAMOS SB
50-1,600 m3/h
single- and two-stage
SAMOS SI
40-2,200 m3/h
single- and two-stage
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The economical solution

SAMOS

Applications

Side channel blowers are used in various industries. They are suitable for applications ranging from pneumatic conveying to medical suction systems.

Each industry and application has different needs. To find out which vacuum solution fits your needs best, get in touch with our Busch experts.

Find out more about how side channel technology is used in different applications.

Your application is not mentioned? Check out our product finder!

FAQ

What is a side channel blower?

Side channel blowers can be used to generate vacuum and overpressure. They transfer the kinetic energy of a rotating impeller to the pumped medium and convert it into pressure. The impeller is mounted directly on the shaft of the motor. Together with the specially shaped housing, it forms the side channel. The pumped medium is suctioned in and compressed in the side channel.

In single-stage side channel blowers, the pumped medium is discharged after one rotation. Two-stage versions convey it to the second stage after one rotation, leading to higher differential pressures.

Side channel blowers are the ideal choice for all applications that require constant gas flows. They are used for various applications in industries ranging from biogas handling to food processing.

How does a side channel blower work?

SAMOS side channel blowers transfer kinetic energy of a rotating impeller to the pumped medium and convert it into pressure. The impeller is mounted directly on the shaft of the motor. Together with the specially shaped housing it forms the side channel.

The pumped medium is suctioned in and compressed in the side channel. Single-stage side channel blowers discharge the pumped medium after one rotation. Two-stage versions convey it to the second stage after one rotation. Here, it is compressed again and discharged afterwards. This leads to higher differential pressures.

Side channel blowers can be used to generate both, vacuum and blast air.

  • Illustration of side channel technology

    Illustration of side channel technology

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    Illustration of side channel technology

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Vacuum generation in side channel blowers explained in three steps

1. Inlet

  • The impeller rotates, creating a flow of air.
  • The pumped medium is drawn in through the inlet.

2. Compression

  • Kinetic energy from the rotating impeller is transferred to the pumped medium, converting it into pressure.
  • Compression is carried out once in single-stage versions and twice in two-stage versions to achieve higher vacuum levels.

3. Outlet

  • Once compressed, the pumped medium is released via the outlet.

  • Inlet

    Inlet

  • Compression

    Compression

  • Outlet

    Outlet

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    Inlet

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    Compression

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    Outlet

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What is the difference between a side channel blower and a regenerative blower?

Side channel blowers and regenerative blowers are two names for the same thing. Thus, there are no differences between them.

What are the advantages and disadvantages of side channel blowers?

Side channel blowers from Busch are reliable, robust and cost-efficient. They have several benefits:

  • Environmentally friendly dry technology
  • Nearly maintenance-free
  • Energy-efficient motor
  • High differential pressures and pumping speeds
  • Low noise levels

All side channel blowers from Busch operate with an open impeller. This avoids the accumulation of dust and other debris between the blades, which could happen with a closed impeller. Such buildups can cause imbalance, vibrations, or bearing failures.

How do I select the appropriate vacuum solution?

Several factors have to be considered when selecting the right vacuum solution. These factors vary depending on the application and the specific needs of your process.

Use our product finder to find your ideal vacuum pump. Or contact us to find out which vacuum solution fits your needs best. Our Busch experts are happy to help!

What makes Busch one of the leading manufacturers of side channel blowers?

Our SAMOS side channel blowers are characterized by operational stability and minimal maintenance or downtimes thanks to their dry and contact-free operating principle. Their open impeller prevents the accumulation of material which can result in bearing failures, imbalances, and vibrations. Additionally, we provide a wide range of accessories to further optimize your process.