• Durability: Vinylester resin, UV protection, extended service life.
• Customizable: Computer strain analysis, G2.5 balance, low vibration risk.
• Easy Maintenance: Oil bath bearings, heat/corrosion resistant, cost-effective.
• Professional Team: Expert wind turbine guidance.
• High aerodynamic efficiency, low noise, corrosion resistance.
• Medium temp range: -20℃ to 80℃, ≤ humidity, ≤ 100mg/m3 dust content.
• Durable Fiberglass Build: Ensures long-lasting performance.
• Ethylene-based fiberglass blades optimize airflow.

Application

The 9-28 Series Centrifugal Fan is generally used for forging furnaces and high-pressure forced ventilation, and is widely used for material transportation. This type of centrifugal blower can transport air and non-corrosive, non-viscous gases. The temperature of the transported medium generally does not exceed 80 degrees Celsius; the dust and hard fine particles contained in the medium are not more than 150 mg/m³. This type of centrifugal blower can also be used as a high-temperature centrifugal fan for special occasions such as cement kiln decomposition process (machine number 16 or above), steel smelting, etc. (use heat-resistant, high-strength materials instead).

Flow rate and pressure range

The 9-28 Series Centrifugal Fan has a flow rate range: single suction is 200-30,000 m³/h; double suction is 2,200-600,000 m³/h. Pressure range: 3,430-19,700 Pa.

Type

① This type of centrifugal fan has two types: single suction and double suction. The machine numbers (No.) are 4, 4.5, 5, 5.6, 6.3, 7.1, 8, 9, 10, 11.2, 12.5, 14, 16, 17, 18, 20, 21, 22, 23, 24, a total of 20 machine numbers.

② This type of centrifugal blower can be made into two types: right-handed or left-handed. Looking from the motor side, if the impeller rotates clockwise, it is called a right-handed centrifugal fan, represented by "right"; if it rotates counterclockwise, it is called a left-handed centrifugal fan, represented by "left".

③ The outlet position of the centrifugal fan is indicated by the outlet angle of the casing. Both "right" and "left" can be made into 0°, 45°, 90°, 135°, 180°, and 225°, a total of 6 angles.

④ The centrifugal fan transmission modes are A type (No. 4-No. 6.3), D type (No. 7.1-No. 16), and E type.
 

Structure

Fans of No. 4-No. 6.3 are mainly composed of impeller, casing, air inlet, bracket, etc. Fans of No. 7.1-No. 24 are mainly composed of impeller, casing, air inlet, transmission part, etc. F-type transmission is mainly composed of impeller, casing, air inlet, air inlet box, transmission part, etc. Fans can also be equipped with adjustable doors according to user needs. The 9-28 Series Centrifugal Fan has 16 long blades and 16 short blades. After the impeller is formed, it is calibrated for static and dynamic balance, and runs smoothly and reliably. ② The casing is welded with ordinary steel plates into a volute casing. For high-temperature centrifugal fans, heat-resistant materials can be selected according to the temperature conditions, and the casing can also be made into split parts. ③ The air inlet is made into a convergent streamlined overall structure and fixed with a front cover assembly with bolts. ④ The dynamic transmission group consists of the main shaft, bearing box, coupling, etc. The main shaft can be made of high-quality steel or heat-resistant steel according to different uses. Ball bearings or sliding bearings are used. Ball bearings are lubricated with bearing grease, and sliding bearings are lubricated with thin oil.

Performance and Selection

The performance of this type of industrial centrifugal fan is converted according to the dimensionless operating point performance table of the centrifugal fan.

• The design and use units shall determine the machine number and required power from the performance table and select the motor according to the selected flow rate and total pressure. Other types of motors may also be selected, but the speed and power must be appropriate and shall be indicated when ordering.
• The performance of each speed in the performance table is divided into 8 operating points according to the flow rate. The performance table shall prevail when ordering.
• The performance of qualified centrifugal fans leaving the factory is that the total pressure value deviation is +5% at a given flow rate.
• The parameters provided in the performance table are calculated based on the standard state of the centrifugal fan inlet, that is, temperature t = 20°C, atmospheric pressure: p a = 10300 Pa, relative humidity φ is 50%, and gas density ρ = 1.2 kg/m³. If the centrifugal fan is not used under standard conditions, the performance should be calculated based on the standard conditions. About formula conversion.

No.	Rotationg Speed (r/min)	Full Pressure /Pa	Air Flow (m³/h)	Effiency(%)	Power/kW	Moter
						Mo.	Power/kW
4A	2900	3893 3884 3835 3776 3707 3629 3540 3452	2198 2473 2748 3022 3297 3572 3847 4122	81.5 82.6 82.6 82.0 81.1 80.0 78.3 76.4	3.35 3.71 4.07 4.44 4.81 5.17 5.55 5.95	Y112M-2 Y132S1-2 Y132S2-2	4 5.5(5.5) 7.5
4.5A	2900	4933 4623 4854 4776 4698 4599 4482 4374	3130 3521 3912 4303 4695 5086 5477 5868	81.5 82.6 82.6 82.0 81.1 80.0 78.3 76.4	6.05 6.70 7.34 8.00 8.68 9.34 10.01 10.73	Y132S2-2 Y160M1-2	7.5 11
5A	2900	6090 6071 6002 5894 5796 5678 5531 5394	4293 4830 5367 5903 6440 6977 7513 8050	81.5 82.6 82.6 82.0 81.1 80.0 78.3 76.4	10.24 11.34 12.45 13.55 14.70 15.81 16.95 18.15	Y160M2-2 Y160L-2	15 18.5
5.6A	2900	7640 7620 7522 7394 7277 7120 6943 6767	6032 6786 7540 8294 7048 7802 10555 11309	81.5 82.6 82.6 82.0 81.1 80.0 78.3 76.4	18.06 19.99 21.93 23.88 25.93 27.86 29.89 31.99	Y180M-2Y200L1-2Y200L2-2	223037
6.3A	2900	9670 9610 9523 9356 9209 9003 8787 8571	8588 9662 10735 11809 12882 13956 15029 16103	81.5 82.6 82.6 82.0 81.1 80.0 78.3 76.4	32.54 36.01 39.52 43.03 46.71 50.15 53.86 57.69	Y225M-2 Y250M-2 Y280S-2	45 55 75
7.1D	2900	12278 12249 12092 11886 11690 11445 11160 10886	12293 13829 15366 16903 18439 19976 21512 23049	81.5 82.6 82.6 82.0 81.1 80.0 78.3 76.4	60.35 66.83 73.30 79.84 86.61 73.13 99.92 107.02	Y280S-2 Y315S-2	15 110
8D	2900	15583 15554 15358 15093 14848 14524 14171 13818	17585 19783 21981 24180 26378 28576 30774 32972	81.5 82.6 82.6 82.0 81.1 80.0 78.3 76.4	109.57 121.39 133.18 145.03 157.37 169.06 181.50 194.33	Y315M1-2Y355M1-2	132 200
8D	1450	3893 3884 3835 3776 3707 3629 3540 3452	8793 9892 10991 12090 13189 14288 15387 16486	81.5 82.6 82.6 82.0 81.1 80.0 78.3 76.4	13.69 15.16 16.63 18.14 19.65 21.12 22.67 24.27	Y180M-4 Y200L-4	18.5 30
9D	1450	4933 4923 4854 4776 4698 4599 4482 4374	12519 14084 15649 17214 18779 20344 21908 23473	81.5 82.6 82.6 82.0 81.1 80.0 78.3 76.4	24.69 27.35 29.97 32.67 35.45 38.12 40.86 43.79	Y200L-4 Y225M-4	30 45
10D	1450	6090 6071 6002 5894 5796 5678 5531 5394	17173 19320 21466 23613 25759 27906 30053 32199	81.5 82.6 82.6 82.0 81.1 80.0 78.3 76.4	41.82 46.27 50.83 55.31 59.99 64.55 69.18 74.08	Y250M-4 Y280S-4	55 75
11.2D	1450	7640 7620 6522 7394 7277 7120 6943 6767	24127 27143 30158 33174 36190 39206 42222 45238	81.5 82.6 82.6 82.0 81.1 80.0 78.3 76.4	73.70 81.60 89.49 97.48 105.82 113.71 122.01 130.57	Y315S-4 Y315M1-4	110 32
11.2D	960	3344 3344 3295 3246 3187 3119 3040 2972	15974 17970 19967 21964 23960 25957 27954 29950	81.5 82.6 82.6 82.0 81.1 80.0 78.3 76.4	21.36 23.71 25.96 28.33 30.69 32.97 35.37 37.96	Y225M-6 Y250M-6	30 37
12.5D	1450	9513 9493 9375 9209 9062 8866 8650 8434	33541 37734 41926 46119 50311 54504 58697 62889	81.5 82.6 82.6 82.0 81.1 80.0 78.3 76.4	127.58 141.32 155.07 168.78 183.19 196.83 211.30 226.24	Y315M2-4 Y355M2-4	160 250
12.5D	960	4168 4158 4109 4040 3972 3884 3795 3697	22206 24982 27758 30534 33310 36085 38861 41637	81.5 82.6 82.6 81.0 81.1 80.0 78.3 76.4	37.01 40.98 45.00 49.03 53.16 57.08 61.38 65.66	Y280S-6 M315S-6	46 75
14D	1450	1935 11906 11759 11553 11366 11121 10847 10582	47123 53013 58903 64794 70684 76574 82465 88355	81.5 82.6 82.6 82.0 81.1 80.0 78.3 76.4	224.88 246.00 273.25 297.47 322.82 346.88 372.26 398.79	Y355M2-4	250

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