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Centrifugal Fans • Designs

Belt drive

Flexibility and precise speed control

  • Variable operating requirements

    Centrifugal fans with belt drive offer a flexible and adaptable solution for processes where different speeds are required.

    In contrast to the motor drive, the belt drive transmits the power of the motor to the fan impeller via a belt. This makes it easy to adapt the speed to the specific requirements of the respective application. By using belt pulleys, different ratios can be realized, which enables precise control of the fan performance.

    This design is ideal for applications where variable speeds and adaptable performance are required. It is also particularly suitable when a spatial separation of motor and fan is necessary or when space is limited.

  • Advantages of the belt drive
    • Flexible speed control
      The speed can be easily adjusted by changing the pulleys - ideal for variable requirements.
    • Easy maintenance
      The belt can be replaced quickly and the motor can be serviced independently of the fan.
    • Customizable gear ratio
      The performance of the fan can be precisely adjusted using different pulleys.
    • Spatial flexibility
      The motor and fan can be mounted separately, which is an advantage if space is limited.
    • Cost-efficient
      Belt drives offer flexibility and easy maintenance at low cost.
  • Technical specifications
    • Volume flow
      Up to 750,000 m³/h (single-flow)
      Up to 1,000,000 m³/h (double-flow)
    • Pressure increase
      Up to 15,000 Pa (single-stage)
      Up to 30,000 Pa (multi-stage)
    • Impeller dimensions
      400mm to 2,800mm
    • Performance range
      Without gearing up to 200kW
      With gearing up to 720kW
    • Operating temperatures
      Up to 900°C
    • Design
      Flying or mounted on both sides
    • Flow
      Single- or dual-suction
    • Installation
      With steel or concrete pedestal
    • Bearing
      Grease or oil-lubricated block or pedestal bearings
  • Technical specifications
    • Volume flow
      from 350m³/h
      to 1,900,000 m³/h (single inlet)
      to > 3,800,000 m³/h (double inlet)
    • Pressure increase
      up to 330 mbar (single-stage)
      up to 560 mbar (two-stage)
    • Impeller dimensions
      from 250 mm to 4,000 mm
    • Peripheral speed
      up to 280 m/s
    • Operating temperature
      from -52 °C to > 850 °C
    • Drive power
      from < 1 kW to > 6,000 kW
Frequently asked questions

Why choose centrifugal fans with belt drive?

When is a belt drive more suitable than a motor drive?

How often does a belt drive need to be serviced?

Can the belt drive be used in potentially explosive atmospheres?

Place your individual request with POLLRICH!

  • Our range of services

    We realize efficient and innovative centrifugal fans for our customers from the respective industries according to our motto “Living Productivity”. With our extensive experience and expert knowledge and using all of our expertise, we produce durable and reliable products and support your company with customer-centric service to keep your production processes running.

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