SWSI Boiler Fan - Coupling Driven Low Pressure G4-10 Centrifugal Blower
SWSI Boiler Fan
,440V Boiler Fan
Coupling Driven Low Pressure SWSI Boiler Fan — G4-10 / Y4-10 Series Centrifugal Blower
The SIMO Blower 4-10 is a coupling driven (D-type drive), low pressure, single width single inlet (SWSI) centrifugal fan engineered for the forced draft (FD) and induced draft (ID) systems of industrial steam boilers rated from 2 T/h to 670 T/h in thermal power plants and process plants. Two model families are produced on the same platform: the G4-10 ventilation fan for combustion air supply and general ventilation, and the Y4-10 induced draft fan for hot flue gas extraction. Impeller diameters run from 800 mm to 2,950 mm (No. 8D to No. 29.5D), covering air volumes up to 810,000 m³/h and total pressures up to 7,218 Pa.
The fan is also used for mine ventilation and general ventilation where no special requirements apply. It is mainly selected where large air flow, low noise and high efficiency are the design priorities, and it can transport clean gas, dusty gas, flammable gas, corrosive gas, powder and granular materials at normal or high temperature.
Key specifications at a glance
| Product type | SWSI centrifugal boiler fan / centrifugal blower (FD & ID duty) |
| Model series | G4-10 (ventilation / forced draft), Y4-10 (induced draft) |
| Model designation | SIMO Blower 4-10, No. 8D to No. 29.5D (impeller 800 mm – 2,950 mm) |
| Impeller support | SWSI — Single Width, Single Inlet, impeller overhung |
| Drive arrangement | Coupling driven (D-type), three phase AC motor |
| Air capacity | 16,156 – 810,000 m³/h (model dependent) |
| Total pressure | up to 7,218 Pa (low pressure series) |
| Motor power | 7.5 – 1,600 kW |
| Voltage options | 380V / 415V / 440V / 660V / 6KV / 10KV |
| Impeller | Dynamically balanced impeller |
| Brand / Origin | SIMO / Henan, China |
| Certification | CE, ISO 9001:2008, TUV |
| Minimum order | 1 set |
| Lead time | 15 – 35 days |
Where this SWSI boiler fan is used
Typical applications include building ventilation, mine ventilation, smoke evacuation, drying, clinker cooling, gas transport, transport of lightweight materials, blast and draft air of industrial boiler systems, air supply to kiln and incinerator systems, induced air systems, air purification equipment and industrial dust collector systems.
In boiler houses the G4-10 fan normally works as the forced draft (FD) fan feeding combustion air to the furnace, while the Y4-10 fan works as the induced draft (ID) fan pulling flue gas through the air preheater, economiser, dust collector and stack. The same platform is also applied in industrial kilns, blast furnaces, industrial waste heat recovery devices and the air purification system of electrolytic aluminium production lines.
Why overseas buyers select this model
Large air flow capability with low noise and high efficiency — the aerodynamic profile is optimised for continuous duty at high volume.
Coupling driven arrangement separates the motor from the hot gas stream, which suits high temperature ID duty and simplifies maintenance and bearing replacement.
Dynamically balanced impeller reduces vibration and extends bearing and shaft seal life in 24/7 boiler house operation.
Wide motor and voltage range from 380V up to 10KV, so the fan can be matched to the local grid without an extra transformer in most projects.
Handles clean, dusty, corrosive and high temperature gases as well as powder and granular material carry-over when the correct impeller material and wear protection are specified.
Factory direct supply with CE, ISO 9001:2008 and TUV certification, and a supply capacity of 500 sets per month for project and OEM schedules.
Technical data — G4-10 / Y4-10 performance table
Performance values below are the standard catalogue range for each impeller size. Rotation speed may be trimmed to your duty point; air capacity, total pressure and shaft power are quoted at the stated speed and gas density.
| Series | Model | Rotation Speed (r/min) | Total Pressure (Pa) | Air Capacity (m³/h) | Power (kW) |
|---|---|---|---|---|---|
| 4-10 | 8D | 1450 | 2104 ∼ 1400 | 16156 ∼ 30993 | 18.55 |
| 4-10 | 9D | 960 ∼ 1450 | 775 ∼ 2668 | 15229 ∼ 44128 | 11 ∼ 37 |
| 4-10 | 10D | 730 ∼ 1450 | 553 ∼ 3301 | 15886 ∼ 60533 | 7.5 ∼ 55 |
| 4-10 | 11D | 730 ∼ 1450 | 669 ∼ 4003 | 21144 ∼ 80570 | 11 ∼ 90 |
| 4-10 | 12D | 730 ∼ 1450 | 797 ∼ 4777 | 25661 ∼ 104600 | 15 ∼ 132 |
| 4-10 | 14D | 730 ∼ 1450 | 1086 ∼ 6541 | 43591 ∼ 166100 | 37 ∼ 315 |
| 4-10 | 16D | 580 ∼ 960 | 895 ∼ 3709 | 51699 ∼ 164150 | 45 ∼ 185 |
| 4-10 | 18D | 580 ∼ 960 | 1133 ∼ 4710 | 73610 ∼ 233730 | 75 ∼ 280 |
| 4-10 | 20D | 580 ∼ 960 | 1400 ∼ 5837 | 100970 ∼ 320610 | 110 ∼ 520 |
| 4-10 | 22D | 480 ∼ 960 | 1216 ∼ 6865 | 116000 ∼ 434000 | 140 ∼ 850 |
| 4-10 | 25D | 480 ∼ 730 | 1579 ∼ 5138 | 171000 ∼ 484000 | 165 ∼ 700 |
| 4-10 | 28D | 375 ∼ 730 | 1205 ∼ 6400 | 187000 ∼ 680000 | 320 ∼ 1250 |
| 4-10 | 29.5D | 596 ∼ 745 | 3236 ∼ 7218 | 348000 ∼ 810000 | 800 ∼ 1600 |
How to select the right boiler fan model
To size a G4-10 or Y4-10 fan correctly, our engineers need four duty values: required air capacity (m³/h), required total pressure (Pa), gas temperature at the fan inlet, and gas composition or dust loading. From these we verify the impeller size, rotation speed, motor power and shaft design, and confirm whether the standard carbon steel construction is suitable or a wear protected / corrosion resistant variant is needed.
Please also confirm supply voltage, frequency (50 or 60 Hz), installation altitude, direction of rotation and the fan arrangement (left or right hand, inlet box orientation), because these determine the final drawing, motor selection and foundation layout. For ID fan duty on high temperature flue gas, the drive arrangement and bearing cooling are reviewed against the actual gas temperature before the offer is released.
Ordering, packing and delivery
| Minimum Order Quantity | 1 set |
| Price | Negotiable, based on model, motor and material options |
| Payment Terms | T/T, L/C, payment term is negotiable |
| Supply Ability | 500 sets per month |
| Delivery Time | 15 – 35 days |
| Packaging | Export wooden case packing, steel pallet packing |
| Warranty | 1 year |
Frequently asked questions
Q: What is the MOQ of your company?
A: The MOQ is 1 set, so a single fan can be ordered for pilot projects, retrofits or spare replacement.
Q: How long is the delivery time?
A: Standard delivery is 15 to 35 days, depending on impeller size, motor specification and whether a custom voltage or material is required.
Q: What are your payment terms?
A: T/T and L/C are both accepted, and the payment term is negotiable for project orders.
Q: What warranty do you offer?
A: The warranty is 1 year.
Q: Is your company a factory or a trading company?
A: We have our own factory; our business type is factory plus trade, which is why we can support both single unit orders and OEM series production.
Q: Which voltages can the fan motor be supplied with?
A: 380V, 415V, 440V, 660V, 6KV and 10KV three phase AC motors are available, in 50 Hz or 60 Hz as required by the destination market.
Q: What information should I send to get a quotation?
A: Send the required air capacity in m³/h, total pressure in Pa, gas temperature, gas composition or dust content, supply voltage and frequency, and installation altitude. With these values we return a model selection and price the same working day.
Q: How is the fan packed for sea freight?
A: Fans are packed in export wooden cases and can be fixed on steel pallets for container loading; the impeller is blocked and the shaft is protected for long sea transport.
Q: Can you supply a complete FD and ID fan set for one boiler?
A: Yes. The G4-10 forced draft fan and the Y4-10 induced draft fan are built on the same platform, so both units for one boiler can be selected and shipped together with matched performance.
Request a quotation for the G4-10 / Y4-10 SWSI boiler fan
Send your duty point — air capacity, total pressure, gas temperature and supply voltage — and our engineering team will confirm the impeller size, motor power and delivery schedule, usually within one working day.
OEM impeller diameters, special voltages, wear protection and material upgrades for corrosive or dusty gas are available on request.
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