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
SGD48.36
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
SGD58.22
Each
units
24 V dc Blower DC 30cfm - 120mm 120mm 31mm 120 x 120 x 31mm 3000rpm 49dB(A) Ball - Brushless
RS Stock No. 144-4135
BrandRS PRO
SGD26.11
Each
units
12 V dc Blower DC 2.4cfm - - 51.11mm 15mm - 3500rpm 32dB(A) Ball - Brushless
RS Stock No. 144-4136
BrandRS PRO
SGD31.62
Each
units
12 V dc Blower DC 4.2cfm - - 51.11mm 15mm - 5500rpm 38dB(A) Ball - Brushless
RS Stock No. 787-4025
BrandRS PRO
SGD56.03
Each
units
12 V dc Blower DC 30cfm - 120mm 120mm 31mm 120 x 120 x 31mm 2700rpm 49dB(A) Ball - Brushless
RS Stock No. 144-4137
BrandRS PRO
SGD45.22
Each
units
12 V dc Blower DC 7.45cfm - - - 15.2mm - 5000rpm 44dB(A) Ball - Brushless
RS Stock No. 787-4022
BrandRS PRO
SGD42.68
Each
units
24 V dc Blower DC 33cfm - 95.87mm - 33mm - 4000rpm 56dB(A) Ball - Brushless
RS Stock No. 787-8967
Mfr. Part No.FW1251-A1051C2AL
BrandARX
SGD20.43
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. 825-7803
Mfr. Part No.R4E225-AI01-10
Brandebm-papst
SGD359.57
Each
units
230 V ac Centrifugal AC 450m³/h R4E225 - 225mm - - 1430rpm 61dB(A) Ball - -
RS Stock No. 250-864
Mfr. Part No.RV40-18/12H
Brandebm-papst
SGD94.58
Each
units
12 V dc Centrifugal DC 24m³/h RV40 77.3mm 102.44mm 58.8mm 77.3 x 102.44 x 58.85mm 4800rpm 50dB Ball - Electronic
RS Stock No. 217-4204
Mfr. Part No.R2E220-AA40-05
Brandebm-papst
SGD409.72
Each
units
230 V ac Centrifugal AC 865m³/h R2E220 - 220mm 71mm - 2600rpm 73dB Ball - -
RS Stock No. 278-1565
Mfr. Part No.R2K150-AC01-15
Brandebm-papst
SGD286.54
Each
units
230 V ac Hot Gas AC 200m³/h R2K - 152mm 98.5mm - 2000rpm - Ball - -
RS Stock No. 332-5699
Mfr. Part No.QLZ06/1800-A304-2524LH-72
Brandebm-papst
SGD113.41
Each
units
230 V ac Tangential AC 150m³/h QLZ 96mm 257mm 83mm 96 x 257 x 83mm 1700rpm 48dB Sleeve - -
RS Stock No. 218-3208
Mfr. Part No.G2E120-AR77-01
Brandebm-papst
SGD467.47
Each
units
230 V ac Centrifugal AC 260m³/h G2E120 184mm 178mm 115mm 184 x 178 x 115mm 2350rpm 61dB Ball 68 x 100mm -
RS Stock No. 250-943
Mfr. Part No.RLF35-8/12N
Brandebm-papst
SGD96.66
Each
units
12 V dc Centrifugal DC 9.6m³/h RLF 35 51mm 51mm 15mm 51 x 51 x 15mm 6700rpm 55dB Ball 43 x 38mm Electronic
RS Stock No. 243-6423
Mfr. Part No.QG030-303/12
Brandebm-papst
SGD266.29
Each
units
12 V dc Tangential DC 139.4m³/h QG 030 47.5mm 363mm 50mm 47.5 x 363 x 50mm 3900rpm 51dB Ball - Electronic
RS Stock No. 892-3403
Mfr. Part No.119151-51
BrandAmetek
SGD2,543.85
Each
units
240 V ac Blower ac 305.82m³/h Windjammer - Bypass 5.7" 150mm 150mm - - - - - - Brushless
RS Stock No. 825-7683
Mfr. Part No.R2E220-AB06-05
Brandebm-papst
SGD316.63
Each
units
230 V ac Centrifugal AC 900 m³/h, 990m³/h R2E220 - 220mm 71mm 220 (Dia.) x 71 Dmm 2700 rpm, 3050rpm 74 dB(A), 75dB(A) Ball - -
RS Stock No. 787-8964
Mfr. Part No.FW1275-A1041C2AL
BrandARX
SGD25.11
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. 498-8601
Mfr. Part No.G2E085-AA01-01
Brandebm-papst
SGD337.30
Each
units
230 V ac Centrifugal AC 85m³/h G2E085 116.5mm 117.5mm 80mm 116.5 x 117.5 x 80mm 2350rpm 53dB Ball 58 x 66mm -