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. 434-9848
Mfr. Part No.QLK45/1818A4-3030LH-16WT
Brandebm-papst
HK$1,061.45
Each
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230 V ac Tangential AC 220m³/h QLK 79mm 492mm 71mm 71 x 510 x 79mm 2050rpm - - - -
RS Stock No. 802-9456
Mfr. Part No.R3G250-RE07-07
Brandebm-papst
HK$2,874.09
Each
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230 V ac Centrifugal AC 1430m³/h RadiCal - 250 (Dia.)mm 99mm 250 (Dia.) x 99mm 2510rpm - Ball - Electronic
RS Stock No. 243-6417
Mfr. Part No.QG030-198/14
Brandebm-papst
HK$987.73
Each
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24 V dc Tangential DC 100m³/h QG030 47.5mm 258mm 50mm 47.5 x 258 x 50mm 4250rpm 51dB Ball - Electronic
RS Stock No. 233-9439
Mfr. Part No.G4E180-GS11-01
Brandebm-papst
HK$4,826.83
Each
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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. 217-4197
Mfr. Part No.R2E180-CB28-01
Brandebm-papst
HK$1,070.73
Each
units
230 V ac Centrifugal AC 450m³/h R2E180 - 180mm 54.5mm - 2550rpm 64dB Ball - -
RS Stock No. 243-6423
Mfr. Part No.QG030-303/12
Brandebm-papst
HK$860.54
Each
units
12 V dc Tangential DC 139.4m³/h QG030 47.5mm 363mm 50mm 47.5 x 363 x 50mm 3900rpm 51dB Ball - Electronic
RS Stock No. 482-077
Mfr. Part No.RL90-18/50
Brandebm-papst
HK$563.93
Each
units
230 V ac Centrifugal AC 40m³/h RL90 120.6mm 120.6mm 37mm 120.6 x 120.6 x 37mm 2450rpm 56dB Sleeve 104.8 x 100.8mm -
RS Stock No. 250-858
Mfr. Part No.RLF35-8/14N
Brandebm-papst
HK$531.73
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. 826-1109
Mfr. Part No.D2E097-CB01-02
Brandebm-papst
HK$1,952.62
Each
units
230 V Centrifugal AC - D2E 097 - - - - - - - - -
RS Stock No. 892-2087
Mfr. Part No.SE2B21A/080694
BrandAmetek
HK$6,032.77
Each
units
110 V ac, 115 V ac Regenerative SPA AC 5.8m³/h Minispiral 105.66mm 104.4mm 45.72mm 104.4 x 105.66 x 45.72mm 2850 rpm, 3400 rpm - Ball - -
RS Stock No. 892-3623
Mfr. Part No.150918-50
BrandAmetek
HK$3,945.66
Each
units
12 V dc Blower DC 39.31m³/h Microjammer 3.0" 74.7mm 77.7mm 88.1mm 77.7 x 74.7 x 88.1mm - - - - Brushless
RS Stock No. 876-5162
Mfr. Part No.D3G133-BF05-14
Brandebm-papst
HK$1,637.74
Each
units
- Centrifugal - - D3G133 - - - - - - Ball - -
RS Stock No. 175-7066
Mfr. Part No.QG030-148/12
Brandebm-papst
HK$1,008.27
Each
units
12 V dc Tangential DC 75m³/h QG030 47.5mm 201mm 50mm 47.5 x 201 x 50mm 4400rpm 49dB Ball - Electronic
RS Stock No. 332-4078
Mfr. Part No.D2E097-BI56-50
Brandebm-papst
HK$1,984.98
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. 468-4668
Mfr. Part No.RL48-19/14
Brandebm-papst
HK$419.46
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
RS Stock No. 223-095
Mfr. Part No.G2E140-AB17-50
Brandebm-papst
HK$3,067.75
Each
units
240 V ac Centrifugal AC 230m³/h G2E140 261mm 226mm 130mm 261 x 226 x 130mm 1400rpm 58dB Ball 105 x 115mm -
RS Stock No. 243-6401
Mfr. Part No.QG030-198/12
Brandebm-papst
HK$914.86
Each
units
12 V dc Tangential DC 100m³/h QG030 47.5mm 258mm 50mm 47.5 x 258 x 50mm 4250rpm 51dB Ball - Electronic
RS Stock No. 825-7875
Mfr. Part No.RER175-42/18/2TDPU
Brandebm-papst
HK$3,758.61
Each
units
18 V dc Centrifugal DC 980m³/h RER175 - 175mm 69mm 175 (Dia.) x 69 Dmm 5400rpm 85dB Ball - -
RS Stock No. 892-3437
Mfr. Part No.119155-06
BrandAmetek
HK$18,798.67
Each
units
240 V ac Blower Ac 455.33m³/h Windjammer - Bypass 5.7" 150mm 150mm - - - - - - Brushless
RS Stock No. 251-132
Mfr. Part No.REF100-11/14
Brandebm-papst
HK$749.32
Each
units
24 V dc Centrifugal DC 86m³/h REF100 - 104mm 24.9mm - 5400rpm 63dB Ball - Electronic
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