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. 825-7904
Mfr. Part No.RG160-28/18N
Brandebm-papst
HK$1,384.52
Each
units
48 V dc Centrifugal DC 209m³/h RG160 220mm 220mm 56mm 220 x 220 x 56mm 2850rpm 66dB Ball 203 x 203mm -
RS Stock No. 860-0257
Mfr. Part No.G1G133-DE19-02
Brandebm-papst
HK$2,856.58
Each (In a Pack of 5)
units
24 V dc Centrifugal DC 225m³/h G1G133 180mm 171mm 81mm 180 x 171 x 81mm 2000rpm 64dB(A) Ball - Electronic
RS Stock No. 892-1671
Mfr. Part No.DR101Y9M/038936
BrandAmetek
HK$19,704.03
Each
units
115 V ac, 230 V ac Regenerative AC 51.73m³/h DR101 211mm 199mm 292mm 199 x 211 x 292mm - - - - -
RS Stock No. 892-2096
Mfr. Part No.SL2P90/036018
BrandAmetek
HK$45,735.06
Each
units
380 V ac, 460 V ac Regenerative SPA AC 100.14m³/h SPIRAL Simplex SL2 253.2mm 309.1mm 199.1mm 309.1 x 253.2 x 199.1mm - - Ball 44.5 x 76.2mm -
RS Stock No. 892-1738
Mfr. Part No.DR454R58M/080481
BrandAmetek
HK$30,599.48
Each
units
115 V ac, 230 V ac Regenerative AC 200.28m³/h DR454 343mm 318mm 367mm 318 x 343 x 367mm - - Ball - -
RS Stock No. 825-7850
Mfr. Part No.RER100-25/14
Brandebm-papst
HK$491.26
Each
units
24 V dc Centrifugal DC - RER100 - 100mm 32mm 100 (Dia.) x 32 Dmm 5400rpm - Ball - -
RS Stock No. 892-3835
Mfr. Part No.516515
BrandAmetek
HK$7,791.10
Each
units
- - - - - - - - - - - - - -
RS Stock No. 860-0239
Mfr. Part No.R2E190-RA50-21
Brandebm-papst
HK$905.93
Each (In a Pack of 5)
units
115 V Centrifugal AC - R2E190 - - - - - - Ball - -
RS Stock No. 180-3034
Mfr. Part No.TF029B-1000-F
HK$1,342.37
Each
units
12 → 27 V dc Blower DC 1.6L/s TF029B 41.5mm 49.44mm 33.6mm 49.44 x 41.5 x 33.6mm 36000rpm 65dB(A) Ball - Brushless
RS Stock No. 825-7617
Mfr. Part No.R1G225-AF07-52
Brandebm-papst
HK$2,556.40
Each
units
24 V dc Centrifugal DC 1130m³/h R1G225 - 225.3mm 99mm 225.3 (Dia.) x 99 Dmm 2700rpm 67dB(A) Ball - Electronic
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. 825-7686
Mfr. Part No.R2E220-AA44-98
Brandebm-papst
HK$1,485.41
Each
units
115 V ac Centrifugal AC - R2E220 - 221.4mm 71mm 221.4 (Dia.) x 71 Dmm 2700rpm >70dB(A) Ball - -
RS Stock No. 892-3507
Mfr. Part No.119494-00
BrandAmetek
HK$7,328.92
Each
units
12 V dc Blower DC 18.57m³/h Microjammer 3.0" 114mm 102.9mm 70.6mm 102.9 x 114 x 70.6mm - - - - Brushless
RS Stock No. 892-2084
Mfr. Part No.SL2P2/036000
BrandAmetek
HK$27,627.37
Each
units
115 V ac Regenerative SPA AC 100.14m³/h SPIRAL Simplex SL2 253.2mm 309.1mm 199.1mm 309.1 x 253.2 x 199.1mm - - Ball 44.5 x 76.2mm -
RS Stock No. 892-3412
Mfr. Part No.119152-01
BrandAmetek
HK$15,179.96
Each
units
240 V ac Blower Ac 305.82m³/h Windjammer - Bypass 5.7" 150mm 150mm - - - - - - Brushless
RS Stock No. 826-1290
Mfr. Part No.G2E150-BA52-07
Brandebm-papst
HK$1,531.62
Each
units
- Centrifugal AC - G2E 150 - - - - - - - - -
RS Stock No. 825-7718
Mfr. Part No.R2E225-BD92-37
Brandebm-papst
HK$2,511.39
Each
units
230 V ac Centrifugal AC 1340m³/h R2E225 - 225mm 99mm 225 (Dia.) x 99 Dmm 2950rpm 71dB(A) Ball - -
RS Stock No. 251-126
Mfr. Part No.REF100-11/12
Brandebm-papst
HK$613.25
Each
units
12 V dc Centrifugal DC 86m³/h REF100 - 104mm 24.9mm - 5400rpm 63dB Ball - Electronic
RS Stock No. 892-1687
Mfr. Part No.DR14RDNT/081475
BrandAmetek
HK$88,683.34
Each
units
- Remote Drive Regenerative - 1468.72m³/h DR14RD 674.1mm 592.3mm 250.7mm 592.3 x 674.1 x 250.7mm - - - - -
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 - - - - -