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. 250-987
Mfr. Part No.RLF100-11/14
Brandebm-papst
TWD2,320.00
Each
units
24 V dc Centrifugal DC 64m³/h RLF100 127mm 127mm 25.4mm 127 x 127 x 25.4mm 5100rpm 64dB Ball 112 x 94.4mm Electronic
RS Stock No. 825-7762
Mfr. Part No.R2S175-AA07-39
Brandebm-papst
TWD5,049.20
Each (In a Pack of 10)
units
- Centrifugal AC 440m³/h R2S175 - 175mm - - 2350rpm 61dB(A) Ball - -
RS Stock No. 825-7686
Mfr. Part No.R2E220-AA44-98
Brandebm-papst
TWD5,028.00
Each
units
115 V ac Centrifugal AC - R2E220 - 221.4mm 71mm 221.4 (Dia.) x 71 Dmm 2700rpm >70dB(A) Ball - -
RS Stock No. 825-7677
Mfr. Part No.R2E220-AA44-23
Brandebm-papst
TWD3,906.00
Each
units
115 V ac Centrifugal AC - R2E220 - 221.4mm 71mm 221.4 (Dia.) x 71 Dmm 2700rpm >70dB(A) Ball - -
RS Stock No. 250-864
Mfr. Part No.RV40-18/12H
Brandebm-papst
TWD1,402.00
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. 126-133
Mfr. Part No.PMB2497PYB1-AY(2).GN
BrandSunon
TWD1,196.00
Each
units
24 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. 825-7667
Mfr. Part No.R2E220-AA40-23
Brandebm-papst
TWD3,723.00
Each
units
230 V ac Centrifugal AC - R2E220 - 221.4mm 71mm 221.4 (Dia.) x 71 Dmm 2700rpm 70dB(A) Ball - -
RS Stock No. 892-3774
Mfr. Part No.515134
BrandAmetek
TWD11,187.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 841-4895
Mfr. Part No.D3G146-AH50-11
Brandebm-papst
TWD11,067.00
Each
units
200 → 277 V ac Centrifugal AC 645m³/h D3G146 219mm 206mm 270mm 219 x 206 x 270mm 1700rpm - Ball 126 x 254mm Electronic
RS Stock No. 841-4898
Mfr. Part No.D3G146-HQ13-34
Brandebm-papst
TWD8,155.00
Each
units
230 V Centrifugal AC 1080m³/h D3G146 216mm 220mm 199mm 216 x 220 x 199mm 2400rpm - Ball 138 x 110mm Electronic
RS Stock No. 712-5241
Mfr. Part No.WT12B3 19031101A
TWD1,446.00
Each
units
12 V dc Blower DC 15cfm Whiffet 80mm 80mm 32mm 80 x 80 x 32mm 4000rpm 52.2dB(A) Ball 71.37 x 71.37mm Brushless
RS Stock No. 787-4029
BrandRS PRO
TWD939.00
Each
units
24 V dc Blower DC 30cfm - 120mm 120mm 31mm 120 x 120 x 31mm 3000rpm 49dB(A) Ball - Brushless
RS Stock No. 830-3032
Mfr. Part No.R3G220-RC05-03
Brandebm-papst
TWD7,984.00
Each
units
230 V ac Centrifugal AC 1015m³/h RadiCal - 220 (Dia.)mm 71mm 220 (Dia.) x 71mm 2580rpm - Ball - Electronic
RS Stock No. 217-4204
Mfr. Part No.R2E220-AA40-05
Brandebm-papst
TWD4,219.00
Each
units
230 V ac Centrifugal AC 865m³/h R2E220 - 220mm 71mm - 2600rpm 73dB Ball - -
RS Stock No. 126-127
Mfr. Part No.PMB4897PYB1-AY(2).GN
BrandSunon
TWD846.00
Each
units
48 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. 825-7706
Mfr. Part No.R2E225-BD92-19
Brandebm-papst
TWD8,917.00
Each
units
230 V ac Centrifugal AC 1340m³/h R2E225 - 225mm 99mm 225 (Dia.) x 99 Dmm 2950rpm 71dB(A) Ball - -
RS Stock No. 892-3396
Mfr. Part No.119104-01
BrandAmetek
TWD37,677.00
Each
units
120 V ac Blower Ac 222.57m³/h Windjammer - Bypass 5.7" 150mm 150mm 176.3mm 150 x 150 x 176.3mm - - - - Brushless
RS Stock No. 892-3465
Mfr. Part No.119378-01
BrandAmetek
TWD27,313.00
Each
units
24 V dc Blower DC 74.76m³/h Minijammer 5.0" 127mm 127mm 71.6mm 127 x 127 x 71.6mm - - - - Brushless
RS Stock No. 892-2065
Mfr. Part No.NC33A3G/037792
BrandAmetek
TWD109,518.00
Each
units
230 V ac Regenerative SPA AC 901.26m³/h Nautilair 273mm 184mm 306mm 184 x 273 x 306mm 2900 rpm, 3500 rpm - Ball 120.7 x 108mm -
RS Stock No. 468-4668
Mfr. Part No.RL48-19/14
Brandebm-papst
TWD1,302.00
Each
units
24 V dc Centrifugal DC 28m³/h RL48 75.5mm 75.2mm 27mm 75.5 x 75.2 x 27mm 4400rpm 57dB Ball 67.1 x 45.7mm Electronic