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. 126-414
Mfr. Part No.GB1205PKV1-8AY.GN
BrandSunon
R 278.74
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. 787-8964
Mfr. Part No.FW1275-A1041C2AL
BrandARX
R 220.82
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. 250-943
Mfr. Part No.RLF35-8/12N
Brandebm-papst
R 495.85
Each
units
12 V dc Centrifugal DC 9.6m³/h RLF35 51mm 51mm 15mm 51 x 51 x 15mm 6700rpm 55dB Ball 43 x 38mm Electronic
RS stock no. 126-420
Mfr. Part No.PMB1297PYB1-AY(2).GN
BrandSunon
R 265.80
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. 332-4078
Mfr. Part No.D2E097-BI56-50
Brandebm-papst
R 3,379.32
Each
units
230 V ac Centrifugal AC 435m³/h D2E 097 165mm 146mm 162mm 165 x 162 x 146mm 1950rpm 58dB Ball 88 x 168mm -
RS stock no. 217-4248
Mfr. Part No.R2S133-AE17-05
Brandebm-papst
R 795.56
Each
units
230 V ac Centrifugal AC 280m³/h R2S133 - 133mm 91mm - 2780rpm 55dB Ball - -
RS stock no. 126-436
Mfr. Part No.PMB1212PLB2-A(2).GN
BrandSunon
R 355.89
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
R 199.26
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. 250-987
Mfr. Part No.RLF100-11/14
Brandebm-papst
R 744.67
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. 250-858
Mfr. Part No.RLF35-8/14N
Brandebm-papst
R 433.57
Each
units
24 V dc Centrifugal DC 9.6m³/h RLF35 51mm 51mm 15mm 51 x 51 x 15mm 6700rpm 55dB Ball 43 x 38mm Electronic
RS stock no. 233-9439
Mfr. Part No.G4E180-GS11-01
Brandebm-papst
R 9,291.42
Each
units
230 V ac Centrifugal AC 910m³/h G4E180 332mm 296mm 183mm 332 x 296 x 183mm 1170rpm 66dB Ball 258 x 163mm -
RS stock no. 250-864
Mfr. Part No.RV40-18/12H
Brandebm-papst
R 508.40
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. 825-7608
Mfr. Part No.R1G190-AB27-02
Brandebm-papst
R 4,664.23
Each
units
24 V dc Centrifugal DC 620m³/h R1G190 - 190mm 68.5mm 190 (Dia.) x 68.5 Dmm 2950rpm 68dB(A) Ball - Electronic
RS stock no. 218-3191
Mfr. Part No.G2E140-AL40-01
Brandebm-papst
R 5,035.19
Each
units
230 V ac Centrifugal AC 385m³/h G2E140 247mm 226mm 130mm 247 x 226 x 130mm 1650rpm 63dB Ball 105 x 115mm -
RS stock no. 218-3208
Mfr. Part No.G2E120-AR77-01
Brandebm-papst
R 3,487.48
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. 825-7594
Mfr. Part No.R1G175-AB75-24
Brandebm-papst
R 2,895.62
Each
units
12 V dc Centrifugal DC 565 m³/h, 695 m³/h R1G175 - 175mm - - 3100 rpm, 4000 rpm 65 dB(A), 72 dB(A) Ball - Electronic
RS stock no. 468-4652
Mfr. Part No.RL48-19/12
Brandebm-papst
R 496.35
Each
units
12 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
RS stock no. 332-4107
Mfr. Part No.G2E120-AR77-A6
Brandebm-papst
R 2,630.23
Each
units
230 V ac Centrifugal AC 255m³/h G2E120 184mm 178mm 115mm 184 x 178 x 115mm 2350rpm 61dB Ball 68 x 100mm -
RS stock no. 787-8967
Mfr. Part No.FW1251-A1051C2AL
BrandARX
R 176.65
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. 514-2963
Mfr. Part No.RLF100-11/12
Brandebm-papst
R 1,138.34
Each
units
12 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