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Specifications

Model No.	Speed(rpm)	Pressure(Pa)	Airflow(m³/h)	Power(kw)
2.8A	2900	994~606	1131~2356	15
3.6A	2900	1578~989	2664~5268	3
3.6A	1450	393~247	1332~2634	1.1
4A	2900	2014~1320	4012~7419	5.5
4A	1450	501~329	2006~3709	1.1
5A	2900	3187~2019	7728~15455	15
5A	1450	790~502	3864~7728	2.2
6A	1450	1139~724	6677~13353	4
6A	960	498~317	4420~8841	1.5
10D	1450	3202~2532	40441~56605	55
	960	1395~1104	26775~37476	18.5
	730	805~637	20360~28497	7.5
12D	960	2013~1593	46267~64759	45
12D	730	1160~919	35182~49244	18.5
8C	1800	3143~2302	19646~36427	30、37
	1600	2478~1816	17463~32380	22、30
	1250	1507~1106	13643~25297	11
	1120	1209-887	12224~22666	7.5、11
	1000	963~707	10914~20237	5.5、7.5
	900	779~572	9823~18213	4、5.5
	800	615~452	8732~16190	3
	710	485~356	7749~14368	2.2、3
	630	381~280	6876~12749	2.2
12C	1120	2746~2172	53979~75552	75
	900	1767~1399	43375~60712	37
	800	1395~1104	38556~53966	22、30
	710	1097~869	34218~47895	18.5
	630	863~684	30362~42498	15
	500	543~430	24097~33728	7.5
	450	440~348	21687~30356	4、5.5
16B	900	3157~2497	102810~143910	132、160
	800	2489~1969	91392~137920	110
	710	1957~1549	81110~113520	75
	630	1538~1218	71971~100730	55
	500	967~766	57120~79950	30
	400	618~490	45696~63960	15
	315	383~303	35985~50368	7.5
20B	710	3069~2427	158410~221730	220
	560	1902~1505	124950~174890	110
	500	1514~1199	111560~156150	75
	400	967~766	89250~124920	37
	355	761~603	79209~110860	30
	250	377~299	55781~78076	11

Show only some parameters

Product Introduction

Rotation Form

Viewed from the motor‑side end, an impeller rotating clockwise is defined as a right‑hand fan, marked “Right”; an impeller rotating counter‑clockwise is defined as a left‑hand fan, marked “Left”.

The outlet direction of the fan is specified by the casing outlet angle.

• For Model 4‑72 fans No.2.8‑6: Only one outlet orientation is manufactured before delivery. Please specify the required outlet position at the time of order.

• Outlet angle adjustment range for No.2.8‑12: 0°~225°, in intervals of 45°.

• Outlet angle adjustment range for No.3.2‑6: 0°~225°, in intervals of 45°.

• Three fixed outlet positions (0°, 90°, 180°) are available for No.16‑20, which are non‑adjustable and shall be specified when ordering.

Four drive types are available: A, B, C, D.

• No.2.8‑6 of 4‑72 fans adopt Type‑A drive

• No.8‑12 adopt Type‑C / D drive

• No.16‑20 adopt Type‑B drive

Structural Features

Fans No.2.8‑6 are mainly composed of impeller, casing and inlet nozzle, directly coupled to the motor.Fans No.8‑20 contain the above‑mentioned components plus the drive assembly.

(1) The impeller consists of 10 backward‑inclined airfoil‑shaped blades, curved front plate and flat rear plate. It is fabricated from copper‑plate or cast‑aluminum alloy, and treated with static‑balance and dynamic‑balance correction. It delivers favorable aerodynamic performance, high efficiency and smooth‑running operation.

(2) Two casing configurations are available:

• No.2.8‑12: The volute casing is manufactured as an integral, non‑detachable unit.

• No.16‑20: Split‑type casing, divided along the horizontal centerline, fastened with bolts.

(3) The integral converged inlet nozzle is mounted on the side of fan casing, connected axially in parallel. Its curved‑profile cross‑section enables smooth gas entry into the impeller with low flow loss.

(4) The drive assembly is made up of main shaft, bearing housing, rolling bearings, belt pulley or coupling.

Performance & Selection

This manual only provides dimensionless performance tables and curves for fan No.10.

The dimensional performance parameters for fans larger than No.10 can be calculated from these data.

Advantages

🔹 Robust Construction — Built with heavy-duty carbon steel housing and reinforced mounting brackets to withstand continuous industrial use and harsh environmental conditions.

🔹 Stable Airflow Performance — Radial blade design delivers consistent, non-pulsating airflow ideal for ducted systems and pressurized environments.

🔹 Easy Installation & Integration — Flanged inlet/outlet ports and standardized mounting holes allow quick setup with common ductwork and motor configurations.

🔹 Low Maintenance Requirements — Accessible inspection panels and service hatches enable routine cleaning and bearing checks without full disassembly.

🔹 Quiet Operation — Vibration-dampening mounts and balanced impeller design reduce operational noise, making it suitable for sensitive environments.

🔹 Wide Compatibility — Works with standard AC motors, belt drives, or direct-drive setups — flexible for retrofits or new builds.

🔹 Proven Reliability — Decades of industry use and adherence to classic mechanical design principles ensure long service life with minimal downtime.

🔹 Cost-Effective Solution — Simple mechanical structure, fewer moving parts, and high availability of replacement components lower total ownership cost.

Applications

Industrial HVAC Systems – Primary air movement in heating, ventilation, and air conditioning networks for factories and production facilities.
Factory Exhaust and Fresh Air Supply – Removing stale air, heat, and airborne contaminants while introducing filtered outdoor air.
Warehouse and Logistics Center Ventilation – Maintaining air quality and temperature uniformity in large storage spaces with high ceilings.
Commercial Building Air Circulation – Supporting HVAC distribution in offices, retail stores, shopping malls, schools, and hospitals.
• Workshop and Manufacturing Facility Airflow – Providing consistent ventilation in machining, assembly, welding, and packaging areas.
Agricultural and Livestock Barn Ventilation – Regulating temperature, humidity, and ammonia levels in animal housing and crop storage facilities.
Kitchen Exhaust Systems – Removing cooking fumes, grease-laden air, and excess heat when paired with appropriate filtration and ductwork.
Mechanical Room Pressurization – Maintaining positive or negative pressure in boiler rooms, generator enclosures, and electrical rooms.
Process Cooling and Fume Extraction – Supporting industrial drying, cooling, and localized fume removal operations.
Underground Parking and Tunnel Ventilation – Ensuring safe air quality and visibility in enclosed vehicular spaces.
Dust Collection Systems – Moving dust-laden air to collection units in woodworking, cement, and bulk material handling facilities.
Paint Booth Ventilation – Providing controlled airflow for overspray removal and worker safety in finishing operations.

4-72 High Efficiency Centrifugal Fan

4‑72 centrifugal fan is used for ventilation of general factories and large‑scale buildings. It conveys air and other non‑self‑ignitable, harmless and non‑corrosive gases. No sticky substances are permitted in the gas. The content of dust and hard‑granular solids shall not exceed 150 mg/m³, and the gas temperature shall not exceed 80 ℃.Featuring a robust carbon steel housing, precision-balanced impeller, and low noise operation, this fan delivers stable airflow and consistent static pressure under continuous duty conditions. Equipped with standard flange connections for easy duct attachment and accessible inspection ports for simplified maintenance, the 4-72 series offers long service life with minimal upkeep. Suitable for general ventilation, exhaust, air circulation, and process cooling applications in a wide range of industrial and commercial environments.

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Specifications

Model No.	Speed(rpm)	Pressure(Pa)	Airflow(m³/h)	Power(kw)
2.8A	2900	994~606	1131~2356	15
3.6A	2900	1578~989	2664~5268	3
3.6A	1450	393~247	1332~2634	1.1
4A	2900	2014~1320	4012~7419	5.5
4A	1450	501~329	2006~3709	1.1
5A	2900	3187~2019	7728~15455	15
5A	1450	790~502	3864~7728	2.2
6A	1450	1139~724	6677~13353	4
6A	960	498~317	4420~8841	1.5
10D	1450	3202~2532	40441~56605	55
	960	1395~1104	26775~37476	18.5
	730	805~637	20360~28497	7.5
12D	960	2013~1593	46267~64759	45
12D	730	1160~919	35182~49244	18.5
8C	1800	3143~2302	19646~36427	30、37
	1600	2478~1816	17463~32380	22、30
	1250	1507~1106	13643~25297	11
	1120	1209-887	12224~22666	7.5、11
	1000	963~707	10914~20237	5.5、7.5
	900	779~572	9823~18213	4、5.5
	800	615~452	8732~16190	3
	710	485~356	7749~14368	2.2、3
	630	381~280	6876~12749	2.2
12C	1120	2746~2172	53979~75552	75
	900	1767~1399	43375~60712	37
	800	1395~1104	38556~53966	22、30
	710	1097~869	34218~47895	18.5
	630	863~684	30362~42498	15
	500	543~430	24097~33728	7.5
	450	440~348	21687~30356	4、5.5
16B	900	3157~2497	102810~143910	132、160
	800	2489~1969	91392~137920	110
	710	1957~1549	81110~113520	75
	630	1538~1218	71971~100730	55
	500	967~766	57120~79950	30
	400	618~490	45696~63960	15
	315	383~303	35985~50368	7.5
20B	710	3069~2427	158410~221730	220
	560	1902~1505	124950~174890	110
	500	1514~1199	111560~156150	75
	400	967~766	89250~124920	37
	355	761~603	79209~110860	30
	250	377~299	55781~78076	11