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. 825-7835
Mfr. Part No.R4E355-AF13-09
Brandebm-papst
HK$2,982.03
Each
units
115 V ac Centrifugal AC 2740 m³/h, 3190 m³/h R4E355 - 355mm - - 1630rpm 68 dB(A), 70 dB(A) Ball - -
RS Stock No. 825-7636
Mfr. Part No.R2E133-BH72-13
Brandebm-papst
HK$1,255.40
Each
units
115 V ac Centrifugal AC 345m³/h R2E133 - 133mm - - 3300rpm 60dB(A) Ball - -
RS Stock No. 482-077
Mfr. Part No.RL90-18/50
Brandebm-papst
HK$725.98
Each
units
230 V ac Centrifugal AC 40m³/h RL90 120.6mm 120.6mm 37mm 120.6 x 120.6 x 37mm 2450rpm 56dB Sleeve 104.8 x 100.8mm -
RS Stock No. 825-7875
Mfr. Part No.RER175-42/18/2TDPU
Brandebm-papst
HK$3,758.61
Each
units
18 V dc Centrifugal DC 980m³/h RER175 - 175mm 69mm 175 (Dia.) x 69 Dmm 5400rpm 85dB Ball - -
RS Stock No. 802-9456
Mfr. Part No.R3G250-RE07-07
Brandebm-papst
HK$3,976.52
Each
units
230 V ac Centrifugal AC 1430m³/h RadiCal - 250 (Dia.)mm 99mm 250 (Dia.) x 99mm 2510rpm - Ball - Electronic
RS Stock No. 217-4197
Mfr. Part No.R2E180-CB28-01
Brandebm-papst
HK$1,323.17
Each
units
230 V ac Centrifugal AC 450m³/h R2E180 - 180mm 54.5mm - 2550rpm 64dB Ball - -
RS Stock No. 920-9196
Mfr. Part No.RER175-42/18/2TDMP
Brandebm-papst
HK$1,330.54
Each
units
48 V dc Centrifugal DC 865m³/h RER175 - 175 (Dia.)mm 69mm 175 (Dia.) 69mm 4800rpm - Ball - -
RS Stock No. 787-8960
Mfr. Part No.FW2451-A1051C2AL
BrandARX
HK$114.17
Each
units
24 V dc Blower DC 6.97m³/h CeraDyna 51mm 51mm 15mm 51 x 51 x 15mm 5500rpm 37dB(A) Sleeve - -
RS Stock No. 175-7066
Mfr. Part No.QG030-148/12
Brandebm-papst
HK$1,008.27
Each
units
12 V dc Tangential DC 75m³/h QG030 47.5mm 201mm 50mm 47.5 x 201 x 50mm 4400rpm 49dB Ball - Electronic
RS Stock No. 892-3500
Mfr. Part No.119498-00
BrandAmetek
HK$7,374.91
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. 892-3504
Mfr. Part No.119498-50
BrandAmetek
HK$7,375.14
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. 892-3507
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. 892-3566
Mfr. Part No.150400-50
BrandAmetek
HK$7,358.73
Each
units
24 V dc Blower DC 221.74m³/h Windjammer - Bypass 5.7" 149.4mm 149.4mm 153.5mm 149.4 x 149.4 x 153.5mm - - - - Brushless
RS Stock No. 892-3541
Mfr. Part No.150166
BrandAmetek
HK$6,244.18
Each
units
12 V dc Blower DC 64.22m³/h Minijammer 5.0" 127mm 127mm 71.6mm 127 x 127 x 71.6mm - - - - Brushless
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. 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. 860-0241
Mfr. Part No.R2E220-RA44-14
Brandebm-papst
HK$1,191.48
Each (In a Pack of 5)
units
115 V Centrifugal AC - R2E220 - - - - - - Ball - -
RS Stock No. 892-1677
Mfr. Part No.DR101Y86M/038938
BrandAmetek
HK$27,032.95
Each
units
575 V ac Regenerative AC 51.73m³/h DR101 211mm 199mm 292mm 199 x 211 x 292mm - - - - -
RS Stock No. 243-6439
Mfr. Part No.G2G085-AB04-10
Brandebm-papst
HK$2,128.64
Each
units
12 V dc Centrifugal DC 80m³/h G2G085 117mm 127mm 76mm 117 x 127 x 76mm 2300rpm 52dB Ball 58 x 66mm Electronic
RS Stock No. 892-3601
Mfr. Part No.150521-00
BrandAmetek
HK$10,033.11
Each
units
240 V ac Blower Ac 270.99m³/h Nautilair 7.6" 189.5mm 204.22mm 138.4mm 204.22 x 189.5 x 138.4mm - - - - Brushless
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