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. 841-4911
Mfr. Part No.R2E190-RA26-05
Brandebm-papst
HK$776.87
Each
units
230 V ac Centrifugal AC 540m³/h RadiCal - 190 (Dia.)mm 68.5mm 190 (Dia.) x 68.5mm 2350rpm 58dB Ball - Electronic
RS Stock No. 126-436
Mfr. Part No.PMB1212PLB2-A(2).GN
BrandSunon
HK$261.48
Each
units
12 V dc Blower DC 35.9cfm PMB 120mm 120mm 32mm 120 x 120 x 32mm 2500rpm 53.8dB(A) Ball 105 x 105mm Brushless
RS Stock No. 217-4254
Mfr. Part No.R2S175-AB56-01
Brandebm-papst
HK$1,033.17
Each
units
230 V ac Centrifugal AC 445m³/h R2S175 - 175mm 69mm - 2350rpm 61dB Ball - -
RS Stock No. 250-864
Mfr. Part No.RV40-18/12H
Brandebm-papst
HK$494.93
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. 332-4107
Mfr. Part No.G2E120-AR77-A6
Brandebm-papst
HK$1,926.08
Each
units
230 V ac Centrifugal AC 255m³/h G2E120 184mm 178mm 115mm 184 x 178 x 115mm 2350rpm 61dB Ball 68 x 100mm -
RS Stock No. 126-414
Mfr. Part No.GB1205PKV1-8AY.GN
BrandSunon
HK$83.91
Each
units
12 V dc Blower DC 5.7cfm GB 50mm 50mm 20mm 50 x 50 x 20mm 5200rpm 35dB(A) Vapo 43 x 40mm Brushless
RS Stock No. 278-1565
Mfr. Part No.R2K150-AC01-15
Brandebm-papst
HK$556.41
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
HK$2,014.47
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. 825-7847
Mfr. Part No.R4E400-AP15-10
Brandebm-papst
HK$5,001.22
Each
units
115 V ac Centrifugal AC 3150m³/h R4E400 - 400mm - - 1300 rpm, 1480 rpm, 1500 rpm 68dB(A) Ball - -
RS Stock No. 434-9832
Mfr. Part No.QLK45/2400A32-2524L-58
Brandebm-papst
HK$657.80
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. 826-1118
Mfr. Part No.D2E133-AM47-01
Brandebm-papst
HK$2,613.58
Each
units
230 V Centrifugal AC 700m³/h D2E 133 180mm 254mm 171.5mm 180 x 254 x 171.5mm 2100rpm 59dB Ball 92 x 238mm Electronic
RS Stock No. 825-7702
Mfr. Part No.R2E225-BD92-09
Brandebm-papst
HK$2,080.21
Each
units
230 V ac Centrifugal AC 1340m³/h R2E225 - 225mm 99mm 225 (Dia.) x 99 Dmm 2950rpm 71dB(A) Ball - -
RS Stock No. 498-8550
Mfr. Part No.R2E 180-AS77-05
Brandebm-papst
HK$1,234.74
Each
units
230 V ac Centrifugal AC 570m³/h R2E180 180mm 180mm 78mm 180 (Dia.) x 78mm 2300rpm 63dB Ball 58 x 58mm -
RS Stock No. 175-7072
Mfr. Part No.QG030-303/14
Brandebm-papst
HK$1,181.04
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. 892-3380
Mfr. Part No.119101-01
BrandAmetek
HK$11,628.07
Each
units
120 V ac Blower Ac 238.76m³/h Windjammer - Bypass 5.7" 150mm 150mm 153.7mm 150 x 150 x 153.7mm - - - - Brushless
RS Stock No. 434-9826
Mfr. Part No.QLK45/1800A118-2518L-73RH
Brandebm-papst
HK$624.17
Each
units
230 V ac Tangential AC 125m³/h QLK 79mm 265mm 71mm 79 x 265 x 71mm 2200rpm - - - -
RS Stock No. 826-1225
Mfr. Part No.FE1Q-115-060-01
Brandebm-papst
HK$2,222.11
Each
units
115 V ac Tangential AC - FE1Q - - - - - - - - -
RS Stock No. 233-9451
Mfr. Part No.D2E133-AM47-23
Brandebm-papst
HK$2,825.11
Each
units
230 V ac Centrifugal AC 710m³/h D2E 133 198mm 171.5mm 254mm 198 x 171.5 x 254mm 1800rpm 59dB Ball 92 x 238mm -
RS Stock No. 468-4652
Mfr. Part No.RL48-19/12
Brandebm-papst
HK$411.16
Each
units
12 V dc Centrifugal DC 28m³/h RL48 75.5mm 75.2mm 27mm 75.5 x 75.2 x 27mm 4400rpm 57dB Ball 67.1 x 45.7mm Electronic
RS Stock No. 876-5162
Mfr. Part No.D3G133-BF05-14
Brandebm-papst
HK$1,637.74
Each
units
- Centrifugal - - D3G133 - - - - - - Ball - -
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