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. 250-858
Mfr. Part No.RLF35-8/14N
Brandebm-papst
£22.68
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. 251-148
Mfr. Part No.RER101-36/12NHH
Brandebm-papst
£85.16
Each
Units
12 V dc Centrifugal DC 190m³/h RER101 - 101mm 51.7mm 101 x 51.7mm 5900rpm 74dB Ball - Electronic
RS Stock No. 233-9439
Mfr. Part No.G4E180-GS11-01
Brandebm-papst
£468.47
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. 841-4905
Mfr. Part No.G2E180-EH03-01
Brandebm-papst
£387.86
Each
Units
230 V ac Centrifugal AC 755m³/h G2E180 283mm 261mm 125mm 283 x 261 x 125mm 1950rpm - Ball 120 x 110mm Electronic
RS Stock No. 826-1294
Mfr. Part No.G2E180-EH03-01
Brandebm-papst
£477.35
Each
Units
230 V Centrifugal AC 400m³/h G2E180 283mm 125mm 261mm 283 x 125 x 261mm 1950 (50 Hz) rpm, 2150 (60 Hz) rpm - Ball 120 x 110mm Electronic
RS Stock No. 332-4113
Mfr. Part No.G2E140-AI28-A5
Brandebm-papst
£311.76
Each
Units
230 V ac Centrifugal AC 485m³/h G2E140 247mm 226mm 130mm 247 x 226 x 130mm 2400rpm 72dB Ball - -
RS Stock No. 218-3191
Mfr. Part No.G2E140-AL40-01
Brandebm-papst
£254.14
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. 243-6445
Mfr. Part No.G2G085-AB02-01
Brandebm-papst
£174.40
Each
Units
24 V dc Centrifugal DC 80m³/h G2G085 117mm 127mm 76mm 117 x 127 x 76mm 2500rpm 53dB Ball 58 x 66mm Electronic
RS Stock No. 332-5683
Mfr. Part No.QLZ06/1800 A297-2518L-93UK
Brandebm-papst
£49.93
Each
Units
230 V ac Tangential AC 130m³/h QLZ 96mm 251mm 83mm 96 x 251 x 83mm 1400rpm 40dB Sleeve 154 x 16.5mm -
RS Stock No. 332-5728
Mfr. Part No.QLZ06/2400A74-3030LH-170
Brandebm-papst
£52.04
Each
Units
230 V ac Tangential AC 170m³/h QLZ 96mm 324mm 83mm 96 x 324 x 83mm 2100rpm 47dB Sleeve - -
RS Stock No. 841-4886
Mfr. Part No.D2E146-HT59-02
Brandebm-papst
£206.74
Each
Units
230 V Centrifugal AC 910m³/h D2E 146 216mm 220mm 199mm 216 x 220 x 199mm 1600rpm - Ball 138 x 110mm Electronic
RS Stock No. 825-7762
Mfr. Part No.R2S175-AA07-39
Brandebm-papst
£113.21
Each (In a Pack of 10)
Units
- Centrifugal AC 440m³/h R2S175 - 175mm - - 2350rpm 61dB(A) Ball - -
RS Stock No. 841-4918
Mfr. Part No.G3G160-AC50-01
Brandebm-papst
£463.16
Each
Units
200 → 277 V ac EC Dual Inlet AC - G3G 262mm 227mm 130mm 262 x 227 x 130mm 2150rpm - Ball 105 x 115mm Electronic
RS Stock No. 434-9826
Mfr. Part No.QLK45/1800A118-2518L-73RH
Brandebm-papst
£54.56
Each
Units
230 V ac Tangential AC 125m³/h QLK 79mm 265mm 71mm 79 x 265 x 71mm 2200rpm - - - -
RS Stock No. 813-525
Mfr. Part No.RG90-18/56
Brandebm-papst
£46.11
Each
Units
230 V ac Centrifugal AC 54m³/h RG90 135mm 135mm 38mm 135 x 135 x 38mm 2200rpm 58dB Ball 122 x 122mm -
RS Stock No. 434-9848
Mfr. Part No.QLK45/1818A4-3030LH-16WT
Brandebm-papst
£103.03
Each
Units
230 V ac Tangential AC 220m³/h QLK 79mm 492mm 71mm 71 x 510 x 79mm 2050rpm - - - -
RS Stock No. 841-4909
Mfr. Part No.G3G146-FK07-02
Brandebm-papst
£413.49
Each
Units
200 → 240 V ac Centrifugal AC 650m³/h G3G 248.5mm 227mm 130mm 248.5 x 227 x 130mm 2320rpm 70dB Ball 105 x 115mm Electronic
RS Stock No. 787-8960
Mfr. Part No.FW2451-A1051C2AL
BrandARX
£9.98
Each
Units
24 V dc Blower DC 6.97m³/h CeraDyna 51mm 51mm 15mm 51 x 51 x 15mm 5500rpm 37.5dB(A) CeraDyna A 43.2 x 38.3mm Electronic
RS Stock No. 813-569
Mfr. Part No.RG160-28/56S
Brandebm-papst
£101.14
Each
Units
230 V ac Centrifugal AC 202m³/h RG160 220mm 220mm 56mm 220 x 220 x 56mm 2750rpm 66dB(A) Ball 203 x 203mm -
RS Stock No. 802-9447
Mfr. Part No.R3G133-RA01-03
Brandebm-papst
£133.98
Each
Units
230 V ac Centrifugal AC 280m³/h RadiCal - 133 (Dia.)mm 65mm 133 (Dia.) x 65mm 3770rpm - Ball - Electronic
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