Model No. | Speed (rpm) | Pressure | Airflow | Power | |
3A | 2900 | 1142~716 | 1588~3049 | 1.5 | |
1450 | 285~175 | 794~1524 | 0.75 | ||
3.5A | 2900 | 1556~976 | 2522~4841 | 3 | |
1450 | 388~243 | 1261~2421 | 1.1 | ||
4A | 2900 | 2036~1276 | 3764~7226 | 5.5 | |
1450 | 506~318 | 1882~3613 | 1.1 | ||
4.5A | 2900 | 2582~1616 | 5360~10288 | 7.5 | |
1450 | 641~402 | 2680~5144 | 1.1 | ||
5A | 2900 | 3195~1998 | 7352~14113 | 11、15 | |
1450 | 792~497 | 3676~7057 | 2.2 | ||
6A | 1450 | 1142~716 | 6352~12194 | 4 | |
960 | 499~313 | 4206~8073 | 1.5 | ||
7C | 1800 | 2406~1506 | 12521~24038 | 15、18.5 | |
1600 | 1897~1189 | 11130~21367 | 11 | ||
1250 | 1155~724 | 8696~16693 | 5.5 | ||
1120 | 927~581 | 7791~14957 | 4 | ||
1000 | 738~463 | 6957~13354 | 3 | ||
900 | 598~375 | 6261~12019 | 3 | ||
800 | 472~296 | 5565~10683 | 2.2 | ||
710 | 372~233 | 4939~9482 | 1.5 | ||
8C | 1800 | 3150~1970 | 18691~35882 | 30、37 | |
1600 | 2483~1554 | 16614~31895 | 22 | ||
1250 | 1511~947 | 12980~24918 | 11 | ||
1120 | 1211~760 | 11630~22326 | 7.5 | ||
1000 | 965~605 | 10384~19934 | 5.5 | ||
900 | 781~490 | 9346~17941 | 4 | ||
800 | 617~387 | 8307~15947 | 3 | ||
710 | 486~305 | 7373~14153 | 2.2 | ||
630 | 382~240 | 6542~12558 | 1.5 | ||
10C | 1300 | 2551~1621 | 37328~50807 | 37 | |
1170 | 2063~1311 | 24595~45726 | 30 | ||
1040 | 1627~1035 | 21862~40645 | 18.5 | ||
940 | 1328~845 | 19760~36737 | 15 | ||
830 | 1034~658 | 17447~32438 | 11 | ||
740 | 822~523 | 15556~28921 | 7.5 | ||
660 | 653~416 | 13874~25794 | 5.5 | ||
580 | 504~321 | 12192~22667 | 4 | ||
520 | 405~258 | 10931~20322 | 3 | ||
12C | 1170 | 2980~1892 | 42500~79015 | 75 | |
1040 | 2349~1493 | 37778~70236 | 55 | ||
940 | 1916~1218 | 34145~63482 | 37 | ||
12C | 830 | 1492~949 | 30150~56053 | 22、30 | |
740 | 1185~754 | 26880~49975 | 18.5 | ||
660 | 942~599 | 23974~44572 | 15 | ||
580 | 727~463 | 21068~39170 | 11 | ||
520 | 584~372 | 18889~35118 | 7.5 | ||
470 | 477~304 | 17072~31741 | 5.5 | ||
420 | 381~242 | 15256~28364 | 4 | ||
Show only some parameters
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
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.
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.
🔧 Robust Carbon Steel Construction — Welded housing resists corrosion and mechanical stress for long-term durability in harsh environments.
⚙️ Precision-Balanced Radial Impeller — High-accuracy balancing ensures smooth, pulsation-free airflow and stable pressure performance.
🔄 Dual Drive Options — Available with direct drive or belt drive for flexible matching to motor power and speed requirements.
🔌 Standard Flange Mounting — Compatible with industrial ductwork and HVAC systems for seamless integration.
🔍 Easy Maintenance Access — Removable access panels and inspection hatches allow quick servicing without full disassembly.
🌍 Global Compliance Ready — Meets international mechanical safety and material standards for deployment in regulated industries.
📦 Factory Tested & Calibrated — Each unit undergoes pre-shipment testing for balance, leakage, and performance consistency.
🔩 Spare Parts Availability — Blades, bearings, and seals are stocked globally to minimize operational downtime.
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.
