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. 787-4013
BrandRS PRO
£22.43
Each
Units
24 V dc Blower DC 10cfm - 75mm 75mm 30mm 75 x 75 x 30mm 3000rpm 38dB(A) Ball - Brushless
RS Stock No. 787-4029
BrandRS PRO
£28.90
Each
Units
24 V dc Blower DC 30cfm - 120mm 120mm 31mm 120 x 120 x 31mm 3000rpm 49dB(A) Ball - Brushless
RS Stock No. 787-4025
BrandRS PRO
£29.75
Each
Units
12 V dc Blower DC 30cfm - 120mm 120mm 31mm 120 x 120 x 31mm 2700rpm 49dB(A) Ball - Brushless
RS Stock No. 787-4022
BrandRS PRO
£19.82
Each
Units
24 V dc Blower DC 33cfm - 95.87mm - 33mm - 4000rpm 56dB(A) Ball - Brushless
RS Stock No. 144-4135
BrandRS PRO
£14.24
Each
Units
12 V dc Blower DC 2.4cfm - - 51.11mm 15mm - 3500rpm 32dB(A) Ball - Brushless
RS Stock No. 144-4136
BrandRS PRO
£14.66
Each
Units
12 V dc Blower DC 4.2cfm - - 51.11mm 15mm - 5500rpm 38dB(A) Ball - Brushless
RS Stock No. 144-4137
BrandRS PRO
£13.97
Each
Units
12 V dc Blower DC 7.45cfm - - - 15.2mm - 5000rpm 44dB(A) Ball - Brushless
RS Stock No. 126-414
Mfr. Part No.GB1205PKV1-8AY.GN
BrandSunon
£13.49
Each
Units
12 V dc Blower DC 5.7cfm GB 50mm 50mm 20mm 50 x 50 x 20mm 5200rpm 35dB(A) Vapo 43 x 40mm Brushless
RS Stock No. 126-420
Mfr. Part No.PMB1297PYB1-AY(2).GN
BrandSunon
£26.88
Each
Units
12 V dc Blower DC 30.5cfm PMB 97.2mm 94.4mm 33mm 94.4 x 97.2 x 33mm 3600rpm 55.8dB(A) Ball 78 x 64mm Brushless
RS Stock No. 787-8967
Mfr. Part No.FW1251-A1051C2AL
BrandARX
£9.52
Each
Units
12 V dc Blower DC 6.97m³/h CeraDyna 51mm 51mm 15mm 51 x 51 x 15mm 5500rpm 37dB(A) Sleeve - -
RS Stock No. 787-8964
Mfr. Part No.FW1275-A1041C2AL
BrandARX
£11.70
Each
Units
12 V dc Blower DC 16.58m³/h CeraDyna 75mm 75mm 15mm 75 x 75 x 15mm 4500rpm 51.3dB(A) Sleeve 80.8mm -
RS Stock No. 126-391
Mfr. Part No.PMB1275PNB1-AY(2).GN
BrandSunon
£18.23
Each
Units
12 V dc Blower DC 13.6cfm PMB 75.7mm 75.7mm 30mm 75.7 x 75.7 x 30mm 3400rpm 43.5dB(A) Ball 67.1 x 45.7mm Brushless
RS Stock No. 126-436
Mfr. Part No.PMB1212PLB2-A(2).GN
BrandSunon
£32.53
Each
Units
12 V dc Blower DC 35.9cfm PMB 120mm 120mm 32mm 120 x 120 x 32mm 2500rpm 53.8dB(A) Ball 105 x 105mm Brushless
RS Stock No. 787-8960
Mfr. Part No.FW2451-A1051C2AL
BrandARX
£10.69
Each
Units
24 V dc Blower DC 6.97m³/h CeraDyna 51mm 51mm 15mm 51 x 51 x 15mm 5500rpm 37dB(A) Sleeve - -
RS Stock No. 813-597
Mfr. Part No.U97EM-012KK-3
BrandMicronel
£181.04
Each
Units
12 V dc Blower DC 9.5L/s U97EM 136mm 98mm 105mm 98 x 136 x 105mm 11300rpm 62dB(A) Ball - -
RS Stock No. 739-6572
Mfr. Part No.SPD24B1QDN 19032364A
£57.78
Each
Units
24 V dc Blower DC 60cfm Spinnaker 161mm 161mm 50mm 161 x 161 x 50mm 2500rpm 57dB(A) Ball 127.9 x 144.27mm Brushless
RS Stock No. 813-575
Mfr. Part No.U64HM-006GK-2
BrandMicronel
£99.78
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. 126-177
Mfr. Part No.PMB1275PNB4-AY(2).GN
BrandSunon
£20.30
Each
Units
12 V dc Blower DC 7.5cfm PMB 75.7mm 75.7mm 30mm 75.7 x 75.7 x 30mm 1900rpm 28dB(A) Ball 61.8 x 48.2mm Brushless
RS Stock No. 381-1320
Mfr. Part No.U97EM-024KK-3
BrandMicronel
£198.94
Each
Units
24 V dc Blower DC 9L/s U97EM 136mm 98mm 105mm 98 x 136 x 105mm 10500rpm 60dB(A) Ball - -
RS Stock No. 892-3620
Mfr. Part No.150908-50
BrandAmetek
£366.83
Each
Units
24 V dc Blower DC 45.07m³/h Microjammer 3.0" 74.7mm 77.7mm 88.1mm 77.7 x 74.7 x 88.1mm - - - - Brushless