Centrifugal Fan Manufacturer โ High Static Pressure Blowers
Industrial centrifugal fans and blowers for ducted ventilation, high-resistance airflow, and process cooling. Forward-curved, backward-curved, and double-inlet designs. AC, EC, and DC drive options. Sizes ร133mm to ร630mm.
- CE
- UL
- cUL
- RoHS
Browse Centrifugal Fans by Specification
Centrifugal fans (blowers) draw air in axially and discharge it at 90ยฐ, generating 5โ20ร more static pressure than axial fans โ the right choice for any application with ducting, filtration, or airflow resistance. Hongbo manufactures three types: forward-curved (high airflow, low noise, ideal for HVAC), backward-curved (high efficiency and pressure, ideal for clean process air and dust collection), and double-inlet (compact, high-volume, ideal for fan coils and AHUs). Sizes ร133โ630mm with AC induction, EC, or DC brushless drive. Custom housings, discharge angles, and flanges available.
Centrifugal Fan Specifications Overview
All performance values measured per AMCA 210 / ISO 5801 in our calibrated airflow chamber. Download the full datasheet
for installation drawings and certification documents.
| Model | Size (mm) | Voltage (VAC) | Power (W) | Speed(RPM) | Airflow (CFM) |
| HB17565-AC | ร175 x 65 | 110, 220V | 51/56 | 2750/3100 | 288/335 |
| HB19061-AC | ร190 x 61 | 110, 220V | 70/90 | 2600/2950 | 336/365 |
| HB22064-AC | ร220 x 64 | 110, 220V | 90/98 | 2600/2950 | 512/583 |
| HB22589-AC | ร225 x 89 | 110, 220V | 120/180 | 2500/2700 | 706/789 |
| HB25086-AC | ร250 x 86 | 110, 220V | 120/210 | 2400/2500 | 854/878 |
- Forward, backward & double-inlet impellers
- AC, EC, and DC drive options
- Galvanized steel or aluminum housing
- Dynamic balancing to ISO 1940 G6.3
- 8 standard discharge orientations
- Operating temp: -20ยฐC to +70ยฐC
- IP54 standard, IP55 optional
- Custom inlet/outlet flanges available
Where Hongbo Centrifugal Fans Are Used
Selected to deliver continuous-duty reliability across the industries where downtime is not an option.
Forward-curved blowers for residential and commercial AHUs, fan coil units, and packaged rooftop units.
Backward-curved fans deliver the high static pressure to overcome HEPA filters, bag houses, and cyclones.
High-temperature centrifugal fans (up to 200ยฐC) for paint curing, food drying, and powder-coating ovens.
Backward-curved EC fans for pharma, semiconductor, and biosafety cabinets โ low particulate, Modbus control.
Compact double-inlet blowers for commercial entrance air curtains and overhead door heaters.
Forced-draft centrifugal fans for industrial burners, boilers, and combustion processes.
What Our Clients Say
Their old fan stalled against filter resistance. Our HB-BC310 held airflow through loaded filters, restoring extraction performance.
Dust Collector Builder
Industrial Filtration | Turkey
A unit maker needed a quiet, low-cost blower for packaged AHUs. Our HB-FC225 met airflow and noise targets at competitive cost.
Rooftop Unit OEM
HVAC Equipment | Mexico
A coating line needed 180ยฐC continuous operation. Our high-temp build ran the curing oven without bearing degradation.
Coating Line Integrator
Industrial Ovens | Italy
Why Manufacturers Choose Hongbo Motor
Centrifugal fans (blowers) draw air in axially and discharge it at 90ยฐ, generating 5โ20ร more static pressure than axial fans โ the right choice for any application with ducting, filtration, or airflow resistance. Hongbo manufactures three types: forward-curved (high airflow, low noise, ideal for HVAC), backward-curved (high efficiency and pressure, ideal for clean process air and dust collection), and double-inlet (compact, high-volume, ideal for fan coils and AHUs). Sizes ร133โ630mm with AC induction, EC, or DC brushless drive. Custom housings, discharge angles, and flanges available.
In-house motor winding, die-casting, injection molding, and assembly in Zhejiang. Monthly capacity 800,000+ units across the centrifugal fan line.
Anechoic chamber, calibrated airflow chamber, 100% Hi-POT testing, ISO 1940 G6.3 rotor balance on every batch.
CE ยท UL / cUL ยท TรV ยท RoHS ยท REACH ยท EAC ยท ISO 9001:2015. Certified for NA, EU, Japan, and SE Asia.
In-house tool shop for custom frames and impellers. DFM review, 3D modeling, and prototypes within 7โ10 days.
Stock models ship in 7 days. Custom orders 25โ35 days for volume. Real-time production photos and QC reports.
Active supplier to OEMs across HVAC, telecom, power, and medical in Germany, USA, India, Turkey, Brazil and beyond.
Our Production Environment
We are factory direct sales, from consumers to stores to wholesalers to agents to general distributors to factory merchants,ย choose us to save a lot of intermediate links, to bring you the maximum profit margin!
Frequently Asked Questions
No fixed MOQ. We accept orders of any size โ from a few pieces for prototyping up to container-scale volume production. Many long-term customers start with a small trial order of Centrifugal Fans to validate fit before scaling up. Tell us your quantity and we’ll quote accordingly.
Yes โ samples are free. You only cover the courier cost (typically $30โ60 via DHL/FedEx, 3โ5 days door to door). Standard-model samples dispatch within 7 days of your request so you can evaluate real performance before committing.
We accept T/T (telegraphic transfer / bank wire). For new orders the standard arrangement is a deposit with the balance before shipment; exact split is confirmed on the proforma invoice. Terms can be discussed for established repeat customers.
All Hongbo Centrifugal Fans carry a 24-month warranty from the shipment date. Verified manufacturing defects are replaced free of charge in your next shipment or credited. Our field return rate is below 0.5%, and we run full root-cause analysis on any batch-level issue.
Standard models ship from stock within 7 days. Bulk orders of 5,000โ20,000 units take 25โ35 days. We confirm a firm ship date on the proforma invoice and send production progress photos at the midpoint of manufacturing.
Yes. You’re welcome to send BV, SGS, TรV, or your own QC team to inspect before shipment. We also provide our own AQL 1.0 inspection report and 100% Hi-POT test records with every shipment at no extra charge.
An axial fan moves air parallel to its shaft (high airflow, low pressure). A centrifugal fan turns flow 90ยฐ through a scroll, generating 5โ20ร higher static pressure. Use centrifugal whenever there’s ducting or filtration; see ourย AC Axial Fanย page for free-air cooling.
Forward-curved: highest airflow at lowโmedium pressure, quieter, lower cost โ ideal for HVAC. Backward-curved: higher pressure, much higher efficiency (60โ75%), non-overloading โ ideal for filtered/variable-resistance systems like dust collection.
Yes โ EC centrifugal fans support 0โ10V/PWM/Modbus, up to 75% efficiency, and EU ErP compliance. Recommended for any new HVAC or data center design. See ourย EC Fanย page.
Yes โ continuous operation up to 200ยฐC ambient with special bearings and class-H insulation. Used in industrial ovens, exhaust hoods, and combustion air supply.
Yes โ every standard model ships with a verified P-Q (pressure vs airflow) curve measured in our calibrated AMCA-style chamber. Custom designs are measured before shipment.
Your OEM Order, Step by Step
From first inquiry to shipped goods. Most customers move from spec to sample in under two weeks.
Contact Information
Share your fan size, voltage, airflow target and order quantity. Hongbo will reply with model suggestions, pricing and sample information.
sales@growwinco.com
86-13917731369, 86-19921915162
86-13917731369
6~8th Floor, No. 1988 Dongfang Road, Pudong Area, Shanghai 200120
Send Your Inquiry
If you have any questions, please do not hesitate to contact us.
