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. 892-1665
Mfr. Part No.DR083DC9Y/081572
BrandAmetek
HK$16,690.73
Each
units
115 V ac, 230 V ac Regenerative AC 30.70m³/h DR083 200.4mm 186.9mm 215.6mm 186.9 x 200.4 x 215.6mm - - - - -
RS Stock No. 826-1284
Mfr. Part No.G2E140-AI28-01
Brandebm-papst
HK$3,409.54
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. 826-1272
Mfr. Part No.G2E120-DO16-17
Brandebm-papst
HK$4,879.73
Each
units
230 V Centrifugal AC - G2E120 - - - - - - - - -
RS Stock No. 825-7853
Mfr. Part No.RER120-26/14/2TDP
Brandebm-papst
HK$1,095.21
Each
units
24 V dc Centrifugal DC 377m³/h RER120 - 120mm 54mm 120 (Dia.) x 54 Dmm 6100rpm 82dB Ball - -
RS Stock No. 860-0267
Mfr. Part No.R1G220-AB73-52
Brandebm-papst
HK$2,613.528
Each (In a Pack of 5)
units
48 V dc Centrifugal DC 1015m³/h R1G220 - - 71mm 220.9 (Dia.) x 71mm 3100rpm 73dB(A) Ball - Electronic
RS Stock No. 825-7746
Mfr. Part No.R2E250-RB02-11
Brandebm-papst
HK$2,790.95
Each
units
- Centrifugal AC 1335 m³/h, 1780 m³/h R2E250 - 250mm - - 2700 rpm, 2750 rpm 72 dB(A), 76 dB(A) Ball - -
RS Stock No. 825-7588
Mfr. Part No.R1G133-AA65-02
Brandebm-papst
HK$1,479.88
Each
units
48 V dc Centrifugal DC 360m³/h R1G133 - 133mm 91mm 133 (Dia.) x 91 Dmm 3900rpm 63dB(A) Ball - Electronic
RS Stock No. 813-575
Mfr. Part No.U64HM-006GK-2
BrandMicronel
HK$1,076.11
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. 223-089
Mfr. Part No.G2E108-AA01-50
Brandebm-papst
HK$1,362.19
Each
units
240 V ac Centrifugal AC 155m³/h G2E108 168mm 159mm 115mm 168 x 159 x 115mm 1650rpm 58dB Ball 66 x 97mm -
RS Stock No. 825-7901
Mfr. Part No.RG160-28/14NTDH
Brandebm-papst
HK$2,582.24
Each
units
24 V dc Centrifugal DC 370m³/h RG160 220mm 220mm 56mm 220 x 220 x 56mm 5000rpm 78dB Ball 203 x 203mm -
RS Stock No. 892-3572
Mfr. Part No.150402-50
BrandAmetek
HK$8,247.78
Each
units
24 V dc Blower DC 107.04m³/h Windjammer - Bypass 5.7" 149.4mm 149.4mm 187.5mm 149.4 x 149.4 x 187.5mm - - - - Brushless
RS Stock No. 892-3544
Mfr. Part No.150186-50
BrandAmetek
HK$10,064.91
Each
units
12 V dc Blower DC 270.99m³/h Nautilair 7.6" 189.5mm 204.22mm 136.7mm 204.22 x 189.5 x 136.7mm - - - - Brushless
RS Stock No. 787-4025
BrandRS PRO
HK$218.12
Each
units
12 V dc Blower DC 30cfm - 120mm 120mm 31mm 120 x 120 x 31mm 2700rpm 49dB(A) Ball - Brushless
RS Stock No. 825-7734
Mfr. Part No.R2E250-RA50-09
Brandebm-papst
HK$3,436.41
Each
units
230 V ac Centrifugal AC 1335 m³/h, 1780 m³/h R2E250 - 250mm - - 2700 rpm, 2750 rpm 72 dB(A), 76 dB(A) Ball - -
RS Stock No. 892-1832
Mfr. Part No.DR656D86X/080604
BrandAmetek
HK$59,861.40
Each
units
575 V ac Regenerative AC 130.18m³/h DR656 382.5mm 390.5mm - - - - Ball - -
RS Stock No. 191-9314
Mfr. Part No.9BMB24S201
HK$247.56
Each
units
24 V dc Blower DC 43.1cfm San Ace B97 97mm 97mm 33mm 97 x 97 x 33mm 5250rpm 59dB(A) - 71 x 71mm -
RS Stock No. 892-3471
Mfr. Part No.119379-05
BrandAmetek
HK$7,697.98
Each
units
24 V dc Blower DC 64.24m³/h Minijammer 5.0" 127mm 127mm 71.6mm 127 x 127 x 71.6mm - - - - Brushless
RS Stock No. 892-1794
Mfr. Part No.DR555K72/081099
BrandAmetek
HK$40,727.77
Each
units
230 V ac, 460 V ac Regenerative AC 317.11m³/h DR555 383mm 379mm 409mm 379 x 383 x 409mm - - Ball - -
RS Stock No. 892-3617
Mfr. Part No.150540-50
BrandAmetek
HK$23,046.80
Each
units
240 V ac Blower Ac - Nautilair 12.3" 314.73mm 332.83mm 222.25mm 332.83 x 314.73 x 222.25mm - - - - Brushless
RS Stock No. 251-148
Mfr. Part No.RER101-36/12NHH
Brandebm-papst
HK$978.85
Each
units
12 V dc Centrifugal DC 190m³/h RER101 - 101mm 51.7mm 101 x 51.7mm 5900rpm 74dB Ball - Electronic
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