Centrifugal Fans

Centrifugal fans are also known as blowers and normally constructed as a fixed drum shape composed with a number of fan blades (impellers), the impellers rotate and blow air or gas from one place to another. Centrifugal fans are used wherever airflow is needed for aspirating, cooling, ventilating and conveying. Centrifugal fans can be single or multi-stage blowers: Single stage blowers are ideal when a uniform airflow is required, Multi-stage is more suited when a varying airflow is required at a fixed pressure.

Features and Benefits

Various IP ratings are available, including IP68, if it needs to be placed in a harsh environment. A choice of different fan speeds from 780 rpm all the up to 11500 rpm. Both backward and forward facing fan blades

Factors to consider when choosing:

  • Pressure requirements
  • Flow requirements
  • Gas consumption
  • Inlet temperature
  • Ambient Temperature
  • Operating altitude of the blower

Where are blowers used?

Blowers are widely used in all manner of everyday items, such as:

  • HVAC systems
  • Dust control
  • Pressure Blowers
  • Air Conditioners
  • Vacuum cleaners
  • Air conveyor systems

What is the difference between a centrifugal fan and an axial fan?

Axial fans are used for high flow rates and low pressures with flow rate parallel to the axis of the fan. The blades of these fans are available in different shapes such as aerofoil, sickle paddle, and various pitch. They are commonly used for cooling and ventilation.

In Centrifugal fans the airflow changes direction twice, once when it enters the fan and secondly when it leaves the fan, These fans have paddle blades forward curved blades, backward curved blades and radial blades. Centrifugal fans move air radially. The airflow created passes through a system of tubes or ducts which creates a higher pressure airflow, making them ideal for high-pressure applications such as cooling and heating systems, dust control, transporting materials and air conveyor systems.


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Description Price Supply Voltage Blower Type AC or DC Operation Air Flow Series Height Width Depth Dimensions Fan Speed Noise Level Bearing Type Mounting Hole Spacing Commutation Type
RS Stock No. 217-4248
Mfr. Part No.R2S133-AE17-05
Brandebm-papst
HK$589.18
Each
units
230 V ac Centrifugal AC 280m³/h R2S133 - 133mm 91mm - 2780rpm 55dB Ball - -
RS Stock No. 892-1734
Mfr. Part No.DR404RDNT/036439
BrandAmetek
HK$16,316.19
Each
units
- Remote Drive Regenerative - 283.73m³/h DR404 293.1mm 292.1mm 309.9mm 292.1 x 293.1 x 309.9mm - - - - -
RS Stock No. 871-9686
Mfr. Part No.R2D180-AL10-13
Brandebm-papst
HK$2,344.948
Each (In a Pack of 10)
units
- Centrifugal AC - R2D180 - 180mm - - - - - - -
RS Stock No. 892-1841
Mfr. Part No.DR757CK72X/081172
BrandAmetek
HK$56,954.73
Each
units
230 V ac, 460 V ac Regenerative AC 550.77m³/h DR757 443mm 426mm 471mm 426 x 443 x 471mm - - Ball - -
RS Stock No. 221-077
Mfr. Part No.RG160-28/12N
Brandebm-papst
HK$1,577.83
Each
units
12 V dc Centrifugal DC 209m³/h RG160 220mm 220mm 56mm 220 x 220 x 56mm 2850rpm 66dB Ball 203 x 203mm Electronic
RS Stock No. 892-2071
Mfr. Part No.SE24RE21 (080847)
BrandAmetek
HK$16,387.11
Each
units
24 → 32 V dc Regenerative SPA DC 14.18m³/h Minispiral HDC 71.6mm 103.4mm 106.9mm 103.4 x 71.6 x 106.9mm 4400 → 8750rpm - Ball - -
RS Stock No. 892-1839
Mfr. Part No.DR656K72X/080602
BrandAmetek
HK$42,047.26
Each
units
230 V ac, 460 V ac Regenerative AC 130.18m³/h DR656 382.5mm 390.5mm 406.4mm 390.5 x 382.5 x 406.4mm - - Ball - -
RS Stock No. 2509574428
Mfr. Part No.OAB800AN-11-1B
BrandOrion
HK$375.90
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508127421
Mfr. Part No.OAB800AN-22-1WB
BrandOrion
HK$375.90
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2509569909
Mfr. Part No.116637-53
BrandAmetek
HK$7,211.12
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508127443
Mfr. Part No.OAB190-22-1
BrandOrion
HK$974.68
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508416513
Mfr. Part No.RER10136/14N/2HHA20184
Brandebm-papst
HK$1,231.72
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2509574440
Mfr. Part No.OAB800AN-11-3B
BrandOrion
HK$375.90
Each
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- - - - - - - - - - - - - -
RS Stock No. 2509574513
Mfr. Part No.OAB908AN-11-1/2
BrandOrion
HK$957.88
Each
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- - - - - - - - - - - - - -
RS Stock No. 2509574579
Mfr. Part No.OAB220-11-1
BrandOrion
HK$1,019.20
Each
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- - - - - - - - - - - - - -
RS Stock No. 2509574686
Mfr. Part No.ODB7530-12HB
BrandOrion
HK$257.60
Each
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- - - - - - - - - - - - - -
RS Stock No. 2509574709
Mfr. Part No.ODB9733-12HB
BrandOrion
HK$257.60
Each
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