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. 434-9832
Mfr. Part No.QLK45/2400A32-2524L-58
Brandebm-papst
£57.50
Each
Units
230 V ac Tangential AC 190m³/h QLK 79mm 331mm 71mm 79 x 331 x 71mm 2300rpm - - 212 x 16.5mm -
RS Stock No. 813-597
Mfr. Part No.U97EM-012KK-3
BrandMicronel
£178.36
Each
Units
12 V dc Blower DC 9.5L/s U97EM 136mm 98mm 105mm 98 x 136 x 105mm 11300rpm 62dB(A) Ball - -
RS Stock No. 826-1317
Mfr. Part No.K3G097-AK34-43
Brandebm-papst
£344.76
Each
Units
26 V Centrifugal DC - K3G 097 - - - - - - - - -
RS Stock No. 826-1284
Mfr. Part No.G2E140-AI28-01
Brandebm-papst
£304.02
Each
Units
230 V Centrifugal AC 490m³/h G2E140 247.5mm 130mm 226.8mm 247.5 x 130 x 226.8mm 2350 rpm, 2400 rpm - Ball 105 x 115mm Electronic
RS Stock No. 243-6401
Mfr. Part No.QG030-198/12
Brandebm-papst
£79.97
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. 126-442
Mfr. Part No.PMB2475PNB4-AY(2).GN
BrandSunon
£16.97
Each
Units
24 V dc Blower DC 7.5cfm PMB 75.7mm 75.7mm 30mm 75.7 x 75.7 x 30mm 1900rpm 28dB(A) Ball 61.8 x 48.2mm Brushless
RS Stock No. 771-9114
Mfr. Part No.QG030-148/14
Brandebm-papst
£59.95
Each
Units
24 V dc Tangential DC 75m³/h QG030 47.5mm 50mm 201mm 47.5 x 50 x 201mm - 49dB(A) Ball - Electronic
RS Stock No. 826-1250
Mfr. Part No.G1G146-BA07-52
Brandebm-papst
£391.32
Each
Units
24 V dc Centrifugal DC - G1G 146 - - - - - - - - -
RS Stock No. 217-4181
Mfr. Part No.R2E133-BH66-05
Brandebm-papst
£102.21
Each
Units
230 V ac Centrifugal AC 290m³/h R2E - 133mm 91mm - 2800rpm 56dB Ball - -
RS Stock No. 175-7072
Mfr. Part No.QG030-303/14
Brandebm-papst
£78.42
Each
Units
24 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. 468-4731
Mfr. Part No.RL90-18/06
Brandebm-papst
£46.66
Each
Units
115 V ac Centrifugal AC 42m³/h RL90 120.6mm 120.6mm 37mm 120.6 x 120.6 x 37mm 2550rpm 60dB Ball 104.8 x 100.8mm -
RS Stock No. 825-7702
Mfr. Part No.R2E225-BD92-09
Brandebm-papst
£157.92
Each
Units
230 V ac Centrifugal AC 1340m³/h R2E225 - 225mm 99mm 225 (Dia.) x 99 Dmm 2950rpm 71dB(A) Ball - -
RS Stock No. 860-0311
Mfr. Part No.R2E140-AL40-05
Brandebm-papst
£127.83
Each
Units
230 V ac Centrifugal AC 385 (M2E 068-CF) m³/h, 485 (M2E 068-DF) m³/h R2E140 - - 74mm 140 (Dia.) x 74mm 1700 rpm, 2400 rpm 63 dB(A), 72 dB(A) Ball - -
RS Stock No. 126-408
Mfr. Part No.PMB2475PNB1-AY(2).GN
BrandSunon
£16.97
Each
Units
24 V dc Blower DC 13.6cfm PMB 75.7mm 75.7mm 30mm 75.7 x 75.7 x 30mm 3400rpm 43.5dB(A) Ball 61.8 x 48.2mm Brushless
RS Stock No. 250-971
Mfr. Part No.RL65-21/14H
Brandebm-papst
£38.30
Each
Units
24 V dc Centrifugal DC 61m³/h RL65 93.5mm 97mm 33mm 93.5 x 97 x 33mm 4900rpm 66dB Ball 71 x 71mm Electronic
RS Stock No. 860-0291
Mfr. Part No.G3G120-BB13-02
Brandebm-papst
£344.99
Each
Units
115 V ac Centrifugal AC - G3G120 190mm 178mm 115mm 190 x 178 x 115mm 2320rpm - Ball 68 x 100mm Electronic
RS Stock No. 739-6572
Mfr. Part No.SPD24B1QDN 19032364A
£56.65
Each
Units
24 V dc Blower DC 60cfm Spinnaker 161mm 161mm 50mm 161 x 161 x 50mm 2500rpm 57dB(A) Ball 127.9 x 144.27mm Brushless
RS Stock No. 813-575
Mfr. Part No.U64HM-006GK-2
BrandMicronel
£93.62
Each
Units
6 V dc Blower DC 4.9L/s U64HM 64mm 64mm 56.5mm 64 x 64 x 56.5mm 11300rpm 55dB(A) Sleeve - -
RS Stock No. 825-7591
Mfr. Part No.R1G175-AB63-02
Brandebm-papst
£181.65
Each
Units
24 V dc Centrifugal DC 565m³/h R1G175 - 175mm 69mm 175 (Dia.) x 69 Din 3100rpm 65dB(A) Ball - Electronic
RS Stock No. 126-177
Mfr. Part No.PMB1275PNB4-AY(2).GN
BrandSunon
£13.58
Each
Units
12 V dc Blower DC 7.5cfm PMB 75.7mm 75.7mm 30mm 75.7 x 75.7 x 30mm 1900rpm 28dB(A) Ball 61.8 x 48.2mm Brushless
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