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 SPA AC 5.8m³/h Minispiral 105.66mm 104.4mm 45.72mm 104.4 x 105.66 x 45.72mm 2850 rpm, 3400 rpm - Ball - -
RS Stock No. 892-3380
Mfr. Part No.119101-01
BrandAmetek
HK$9,913.66
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. 892-2087
Mfr. Part No.SE2B21A/080694
BrandAmetek
HK$5,143.55
Each
units
110 V ac, 115 V ac Regenerative SPA AC 5.8m³/h Minispiral 105.66mm 104.4mm 45.72mm 104.4 x 105.66 x 45.72mm 2850 rpm, 3400 rpm - Ball - -
RS Stock No. 892-3425
Mfr. Part No.119154-51
BrandAmetek
HK$10,785.58
Each
units
240 V ac Blower Ac 237.86m³/h Windjammer - Bypass 5.7" 150mm 150mm - - - - - - Brushless
RS Stock No. 892-3437
Mfr. Part No.119155-06
BrandAmetek
HK$16,027.22
Each
units
240 V ac Blower Ac 455.33m³/h Windjammer - Bypass 5.7" 150mm 150mm - - - - - - Brushless
RS Stock No. 892-3623
Mfr. Part No.150918-50
BrandAmetek
HK$3,364.02
Each
units
12 V dc Blower DC 39.31m³/h Microjammer 3.0" 74.7mm 77.7mm 88.1mm 77.7 x 74.7 x 88.1mm - - - - Brushless
RS Stock No. 892-1891
Mfr. Part No.EN404AR58ML/038173
BrandAmetek
HK$25,872.86
Each
units
115 V ac, 230 V ac Regenerative AC 166.9m³/h EN404 416.8mm 257.3mm 311.2mm 257.3 x 416.8 x 311.2mm - - Ball - -
RS Stock No. 892-3415
Mfr. Part No.119152-52
BrandAmetek
HK$10,865.24
Each
units
240 V ac Blower Ac 305.82m³/h Windjammer - Bypass 5.7" 150mm 150mm - - - - - - Brushless
RS Stock No. 892-3504
Mfr. Part No.119498-50
BrandAmetek
HK$6,287.84
Each
units
24 V dc Blower DC 12.74m³/h Microjammer 3.3" 83.6mm 112.2mm 69.7mm 112.2 x 83.6 x 69.7mm - - - - Brushless
RS Stock No. 892-1750
Mfr. Part No.DR505AS86M/037544
BrandAmetek
HK$33,948.06
Each
units
575 V ac Regenerative AC 250.35m³/h DR505 366.5mm 345.2mm 365mm 345.2 x 366.5 x 365mm - - Ball - -
RS Stock No. 892-1895
Mfr. Part No.EN656M72XL (080059)
BrandAmetek
HK$38,949.66
Each
units
230 V ac, 460 V ac Regenerative AC 353.82m³/h EN656 492mm 391.7mm 382.5mm 391.7 x 492 x 382.5mm - - Ball - -
RS Stock No. 892-3386
Mfr. Part No.119003-01
BrandAmetek
HK$2,990.27
Each
units
- - - - - - - - - 4228rpm - - - -
RS Stock No. 892-1680
Mfr. Part No.DR14DW72MW (081476)
BrandAmetek
HK$167,352.71
Each
units
230 V ac Regenerative AC 1752.45m³/h DR14 701mm 446.3mm 801.4mm 446.3 x 701 x 801.4mm - - - - -
RS Stock No. 892-1766
Mfr. Part No.DR505K72M/037551
BrandAmetek
HK$31,667.52
Each
units
230 V ac, 460 V ac Regenerative AC 250.35m³/h DR505 366.5mm 345.2mm 397mm 345.2 x 366.5 x 397mm - - Ball - -
RS Stock No. 892-3598
Mfr. Part No.150436-50
BrandAmetek
HK$7,178.52
Each
units
24 V dc Blower DC 107.04m³/h Windjammer - Bypass 5.7" 149.4mm 149.4mm 137.5mm 149.4 x 149.4 x 137.5mm - - - - Brushless
RS Stock No. 892-3611
Mfr. Part No.150561-01
BrandAmetek
HK$9,700.58
Each
units
120 V ac Blower Ac 262.41m³/h Nautilair 7.6" 189.5mm 204.22mm 138.4mm 204.22 x 189.5 x 138.4mm - - - - Brushless
RS Stock No. 892-2071
Mfr. Part No.SE24RE21 (080847)
BrandAmetek
HK$13,971.21
Each
units
24 → 32 V dc Regenerative SPA DC 14.18m³/h Minispiral HDC 71.6mm 103.4mm 106.9mm 103.4 x 71.6 x 106.9mm 4400 → 8750rpm - Ball - -
RS Stock No. 892-1696
Mfr. Part No.DR202Y72M/080565
BrandAmetek
HK$17,054.96
Each
units
230 V ac, 460 V ac Regenerative AC 86.78m³/h DR202 254mm 245mm 299mm 245 x 254 x 299mm - - - - -
RS Stock No. 892-1740
Mfr. Part No.DR454R86M/080482
BrandAmetek
HK$31,105.11
Each
units
575 V ac Regenerative AC 200.28m³/h DR454 343mm 318mm - - - - Ball - -
RS Stock No. 892-1753
Mfr. Part No.DR505AS72M/037543
BrandAmetek
HK$21,872.91
Each
units
230 V ac, 460 V ac Regenerative AC 250.35m³/h DR505 366.5mm 345.2mm 374mm 345.2 x 366.5 x 374mm - - Ball - -