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. 892-2078
Mfr. Part No.SE2B21 (081901)
BrandAmetek
HK$4,496.09
Each
units
110 V ac, 115 V ac Regenerative AC - - 105.66mm 104.4mm 45.72mm 105.66 x 104.4 x 45.72mm 2850 rpm, 3400 rpm - Ball - -
RS Stock No. 826-1294
Mfr. Part No.G2E180-EH03-01
Brandebm-papst
HK$4,368.35
Each
units
230 V Centrifugal AC 400m³/h G2E180 283mm 125mm 261mm 283 x 125 x 261mm 1950 rpm, 2150 rpm - Ball 120 x 110mm Electronic
RS Stock No. 841-4905
Mfr. Part No.G2E180-EH03-01
Brandebm-papst
HK$4,368.35
Each
units
230 V ac Centrifugal AC 755m³/h G2E180 283mm 261mm 125mm 283 x 261 x 125mm 1950rpm - Ball 120 x 110mm Electronic
RS Stock No. 250-943
Mfr. Part No.RLF35-8/12N
Brandebm-papst
HK$328.96
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. 617-4501
Mfr. Part No.FE1Q230-060-04
Brandebm-papst
HK$2,050.90
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. 841-4898
Mfr. Part No.D3G146-HQ13-34
Brandebm-papst
HK$2,834.98
Each
units
230 V Centrifugal AC 1080m³/h D3G146 216mm 220mm 199mm 216 x 220 x 199mm 2400rpm - Ball 138 x 110mm Electronic
RS Stock No. 332-4113
Mfr. Part No.G2E140-AI28-A5
Brandebm-papst
HK$4,266.02
Each
units
230 V ac Centrifugal AC 485m³/h G2E140 247mm 226mm 130mm 247 x 226 x 130mm 2400rpm 72dB Ball - -
RS Stock No. 860-0302
Mfr. Part No.R4E355-AK05-09
Brandebm-papst
HK$4,240.40
Each
units
- Centrifugal AC - R4E355 - - - - - - Ball - -
RS Stock No. 787-8964
Mfr. Part No.FW1275-A1041C2AL
BrandARX
HK$98.06
Each
units
12 V dc Blower DC 16.58m³/h CeraDyna 75mm 75mm 15mm 75 x 75 x 15mm 4800rpm 54.4dB(A) CeraDyna A - Electronic
RS Stock No. 825-7831
Mfr. Part No.R4E355-AF05-09
Brandebm-papst
HK$3,238.84
Each
units
230 V ac Centrifugal AC 2740 m³/h, 3190 m³/h R4E355 - 355mm 170.5mm 355 (Dia.) x 170.5 Dmm 1630rpm 68 dB(A), 70 dB(A) Ball - -
RS Stock No. 514-2979
Mfr. Part No.RG130/0800-3612 010201
Brandebm-papst
HK$1,537.25
Each
units
230 V ac Hot Gas AC 115m³/h RG130 176mm 178mm 98mm 176 x 178 x 98mm 8000rpm 55dB Ball - Electronic
RS Stock No. 813-597
Mfr. Part No.U97EM-012KK-3
BrandMicronel
HK$1,551.11
Each
units
12 V dc Blower DC 34.5m³/h U97EM 136mm 98mm 105mm 136 x 98 x 105mm 11300rpm 62dB Ball 88 x 42mm -
RS Stock No. 696-3566
Mfr. Part No.D4E146-LV19-14
Brandebm-papst
HK$1,704.10
Each
units
230 V ac Centrifugal AC 565m³/h D4E146 216mm 203mm 203mm 216 x 203 x 272mm 780rpm 46dB Ball 100 x 247mm -
RS Stock No. 841-4886
Mfr. Part No.D2E146-HT59-02
Brandebm-papst
HK$2,175.08
Each
units
230 V Centrifugal AC 910m³/h D2E 146 216mm 220mm 199mm 216 x 220 x 199mm 1600rpm - Ball 138 x 110mm Electronic
RS Stock No. 332-5734
Mfr. Part No.QLZ06/3000A105-3038LH-63
Brandebm-papst
HK$612.78
Each
units
230 V ac Tangential AC 230m³/h QLZ 96mm 395mm 83mm 96 x 395 x 83mm 1600rpm 48dB Sleeve - -
RS Stock No. 841-4902
Mfr. Part No.D4E225-CC01-54
Brandebm-papst
HK$6,882.26
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. 332-5683
Mfr. Part No.QLZ06/1800 A297-2518L-93UK
Brandebm-papst
HK$438.90
Each
units
230 V ac Tangential AC 130m³/h QLZ 96mm 251mm 83mm 96 x 251 x 83mm 1400rpm 40dB Sleeve 154 x 16.5mm -
RS Stock No. 217-4204
Mfr. Part No.R2E220-AA40-05
Brandebm-papst
HK$1,218.57
Each
units
230 V ac Centrifugal AC 865m³/h R2E220 - 220mm 71mm - 2600rpm 73dB Ball - -
RS Stock No. 860-0204
Mfr. Part No.D2E133-DM47-01
Brandebm-papst
HK$2,303.27
Each
units
230 V ac Centrifugal AC 495m³/h D2E133 213mm 204mm 270mm 213 x 204 x 270mm 2200rpm >70dB(A) Ball 126 x 254mm -
RS Stock No. 126-436
Mfr. Part No.PMB1212PLB2-A(2).GN
BrandSunon
HK$245.06
Each
units
12 V dc Blower DC 61m³/h PMB 120mm 120mm 32mm 120 x 120 x 32mm 2500rpm 53.8dB Ball 105 x 105mm Electronic