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. 787-8967
Mfr. Part No.FW1251-A1051C2AL
BrandARX
SGD17.81
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. 825-7803
Mfr. Part No.R4E225-AI01-10
Brandebm-papst
SGD367.78
Each
units
230 V ac Centrifugal AC 765m³/h R4E225 - 225mm - - 1660rpm 61dB(A) Ball - -
RS Stock No. 250-864
Mfr. Part No.RV40-18/12H
Brandebm-papst
SGD65.55
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. 217-4204
Mfr. Part No.R2E220-AA40-05
Brandebm-papst
SGD292.93
Each
units
230 V ac Centrifugal AC 865m³/h R2E220 - 220mm 71mm - 2600rpm 73dB Ball - -
RS Stock No. 278-1565
Mfr. Part No.R2K150-AC01-15
Brandebm-papst
SGD108.97
Each
units
230 V ac Hot Gas AC 200m³/h R2K - 152mm 98.5mm - 2000rpm - Ball - -
RS Stock No. 218-3208
Mfr. Part No.G2E120-AR77-01
Brandebm-papst
SGD359.92
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. 332-5699
Mfr. Part No.QLZ06/1800-A304-2524LH-72
Brandebm-papst
SGD97.76
Each
units
230 V ac Tangential AC 150m³/h QLZ 96mm 257mm 83mm 96 x 257 x 83mm 1700rpm 48dB Sleeve - -
RS Stock No. 250-943
Mfr. Part No.RLF35-8/12N
Brandebm-papst
SGD75.67
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. 826-1317
Mfr. Part No.K3G097-AK34-43
Brandebm-papst
SGD680.94
Each
units
26 V Centrifugal DC - K3G 097 - - - - - - - - -
RS Stock No. 830-3029
Mfr. Part No.R2E225-RA92-09
Brandebm-papst
SGD282.03
Each
units
230 V ac Centrifugal AC 1195m³/h R2E225 - 225 (Dia.)mm 99mm 225 (Dia.) x 99mm 2500rpm - Ball - -
RS Stock No. 841-4902
Mfr. Part No.D4E225-CC01-54
Brandebm-papst
SGD1,272.80
Each
units
230 V Centrifugal AC 2615m³/h D4E 225 370mm 327mm 341mm 370 x 327 x 341mm 1090rpm - Ball 284 x 321mm Electronic
RS Stock No. 243-6423
Mfr. Part No.QG030-303/12
Brandebm-papst
SGD207.98
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. 892-3403
Mfr. Part No.119151-51
BrandAmetek
SGD2,176.02
Each
units
240 V ac Blower Ac 305.82m³/h Windjammer - Bypass 5.7" 150mm 150mm - - - - - - Brushless
RS Stock No. 787-8964
Mfr. Part No.FW1275-A1041C2AL
BrandARX
SGD21.88
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. 825-7683
Mfr. Part No.R2E220-AB06-05
Brandebm-papst
SGD270.10
Each
units
230 V ac Centrifugal AC 900 m³/h, 990 m³/h R2E220 - 220mm 71mm 220 (Dia.) x 71 Dmm 2700 rpm, 3050 rpm 74 dB(A), 75 dB(A) Ball - -
RS Stock No. 892-3762
Mfr. Part No.515132
BrandAmetek
SGD251.27
Each
units
- - - - - - - - - - - - - -
RS Stock No. 482-077
Mfr. Part No.RL90-18/50
Brandebm-papst
SGD130.41
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. 617-4501
Mfr. Part No.FE1Q230-060-04
Brandebm-papst
SGD496.92
Each
units
230 V ac Tangential AC 340m³/h FE1Q 169mm 483mm 88mm 169 x 483 x 88mm 2390rpm 54dB Ball 76.2 x 465.1mm -
RS Stock No. 825-7756
Mfr. Part No.R2E280-AE52-05
Brandebm-papst
SGD567.55
Each
units
230 V ac Centrifugal AC 2110m³/h R2E280 - 280mm 125mm 280 (Dia.) x 125 Dmm 2700rpm 76dB(A) Ball - -
RS Stock No. 498-8601
Mfr. Part No.G2E085-AA01-01
Brandebm-papst
SGD287.37
Each
units
230 V ac Centrifugal AC 85m³/h G2E085 116.5mm 117.5mm 80mm 116.5 x 117.5 x 80mm 2350rpm 53dB Ball 58 x 66mm -
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