Centrifugal Fans

Centrifugal fans are also known as blowers and normally constructed as a fixed drum shape 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. You can find out more in our centrifugal fans guide.

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 to 11500 rpm.

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.

Centrifugal fans 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, backwards 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. 332-5728
Mfr. Part No.QLZ06/2400A74-3030LH-170
Brandebm-papst
HK$595.34
Each
units
230 V ac Tangential AC 170m³/h QLZ 96mm 324mm 83mm 96 x 324 x 83mm 2100rpm 47dB Sleeve - -
RS Stock No. 787-4025
BrandRS PRO
HK$324.24
Each
units
12 V dc Blower DC 30cfm - 120mm 120mm 31mm 120 x 120 x 31mm 2700rpm 49dB(A) Ball - Brushless
RS Stock No. 180-3030
Mfr. Part No.TF037C-2100-F
HK$2,095.62
Each
units
24 V dc Blower DC 1.6L/s TF037C 50.5mm 40.4mm 54mm 40.4 x 50.5 x 54mm 40000rpm 67dB(A) Ball - Brushless
RS Stock No. 787-4029
BrandRS PRO
HK$329.42
Each
units
24 V dc Blower DC 30cfm - 120mm 120mm 31mm 120 x 120 x 31mm 3000rpm 49dB(A) Ball - Brushless
RS Stock No. 191-9265
Mfr. Part No.109BC12GC7-1
HK$165.65
Each
units
12 V Blower Dc 4.4cfm San Ace B52 9BC - 52 Dia.mm 15mm 52x15mm - 43dB(A) Ball 38 x 43mm -
RS Stock No. 180-3031
Mfr. Part No.TF037C-2000-F
HK$2,590.82
Each
units
24 V dc Blower DC 1.6L/s TF037C 50.5mm 40.4mm 37.3mm 40.4 x 50.5 x 37.3mm 40000rpm 67dB(A) Ball - Brushless
RS Stock No. 191-9312
Mfr. Part No.9BMB24P2H01
HK$262.20
Each
units
24 V dc Blower DC 39.2cfm San Ace B97 97mm 97mm 33mm 97 x 97 x 33mm 4850rpm 66dB(A) - 71 x 71mm -
RS Stock No. 124-3362
Mfr. Part No.CREB225ST-92-00 17000468A
HK$1,887.51
Each
units
230 V ac Centrifugal AC 748cfm CREB225 225mm 225mm 136.5mm 225 x 225 x 136.5mm 3010rpm 71dB(A) Ball 125mm -
RS Stock No. 892-3493
Mfr. Part No.119384-52
BrandAmetek
HK$6,050.45
Each
units
24 V dc Blower DC 57.77m³/h Minijammer 5.0" 127mm 127mm 71.6mm 127 x 127 x 71.6mm - - - - Brushless
RS Stock No. 202-5420
Mfr. Part No.MF60151V1-1B000U-A99
BrandSunon
HK$200.82
Each
units
12 V Centrifugal Dc 5.7cfm MF - - - 60 x 60 x 15mm - - - - -
RS Stock No. 124-3363
Mfr. Part No.CREB250ST-92-00 17000469A
HK$2,118.48
Each
units
230 V ac Centrifugal AC 765cfm CREB250 250mm 250mm 125mm 250 x 250 x 125mm 2760rpm 71dB(A) Ball 125mm -
RS Stock No. 813-575
Mfr. Part No.U64HM-006GK-2
BrandMicronel
HK$1,050.49
Each
units
6 V dc Blower DC 4.9L/s U64HM 64mm 64mm 56.5mm 64 x 64 x 56.5mm 11300rpm 55dB(A) Sleeve - -
RS Stock No. 221-083
Mfr. Part No.RG160-28/14N
Brandebm-papst
HK$857.25
Each
units
24 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. 892-3421
Mfr. Part No.119153-51
BrandAmetek
HK$10,701.48
Each
units
240 V ac Blower Ac 237.68m³/h Windjammer - Bypass 5.7" 150mm 150mm - - - - - - Brushless
RS Stock No. 191-9266
Mfr. Part No.109BC24GC7-1
HK$165.65
Each
units
24 V Blower Dc 4.4cfm San Ace B52 9BC - 52 Dia.mm 15mm 52x15mm - 43dB(A) Ball 38 x 43mm -
RS Stock No. 825-7667
Mfr. Part No.R2E220-AA40-23
Brandebm-papst
HK$1,036.12
Each
units
230 V ac Centrifugal AC - R2E220 - 221.4mm 71mm 221.4 (Dia.) x 71 Dmm 2700rpm >70dB(A) Ball - -
RS Stock No. 825-7803
Mfr. Part No.R4E225-AI01-10
Brandebm-papst
HK$2,088.34
Each
units
230 V ac Centrifugal AC 450m³/h R4E225 - 225mm - - 1430rpm 61dB(A) Ball - -
RS Stock No. 830-3032
Mfr. Part No.R3G220-RC05-03
Brandebm-papst
HK$1,994.74
Each
units
230 V ac Centrifugal AC 1015m³/h RadiCal - 220 (Dia.)mm 71mm 220 (Dia.) x 71mm 2580rpm - Ball - Electronic
RS Stock No. 191-9268
Mfr. Part No.109BD24HC2
HK$363.61
Each
units
24 V Blower Dc 12.7cfm San Ace B76 9BD - 76 Dia.mm 30mm 76´30mm - 41.5dB(A) Ball 45.7 x 67.1mm -
RS Stock No. 191-9313
Mfr. Part No.9BMB24P2K01
HK$202.18
Each
units
24 V dc Blower DC 56.8cfm San Ace B97 97mm 97mm 33mm 97 x 97 x 33mm 6850rpm 57dB(A) - 71 x 71mm -