GY7-41 Centrifugal blower
The fan features high efficiency, high total pressure, low noise, a smooth performance curve, and a wide range of efficient operation. It uses backward-curved blades for improved performance.
At its optimal working point, the fan reaches a full-pressure efficiency of 86.5%, and the noise index is LS = 11.5 dB(A) — both of which are among the best levels compared to domestic industrial boiler fans.
Specifications:
▪ Pressure range: 1299 – 4980 Pa
▪ Air volume: 3521 – 77029 m³/h
▪ Speed: 1450 – 3000 r/min
▪ Impeller diameter : 450 – 1250 mm
▪ Drive type: Direct / Belt / Coupling drive
▪ Cooling method: Air cooling (Water or oil cooling optional)
CONFIGURATION OPTIONS
1. CONSTRUCTION & MATERIALS
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Impeller: Carbon steel; optional FRP, stainless steel, rubber lining, wear-resistant or ceramic coating.
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Casing / Damper: Standard carbon steel; optional FRP or stainless steel.
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Main Shaft: High-strength alloy steel.
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Bearings: ZWZ / SKF / FAG / NSK.
2.SYSTEM & ACCESSORIES
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Motor: High-efficiency Chinese brand or ABB / Siemens / WEG.
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Optional Parts: Base frame, silencer, flexible joint, damper, rain cover, shock absorber, sensors, inverter, soft starter, monitoring instruments.
| Serial Number | Machine Number | Rotating Speed (r/min) | Full Pressure (Pa) | Air Volume (m³/h) | Power (kW) |
|---|---|---|---|---|---|
| 1 | 4.5C | 3000 | 2652~2136 | 3643~7285 | 7.5 |
| 1 | 4.5C | 2900 | 2478~1996 | 3521~7042 | 5.5~7.5 |
| 1 | 4.5C | 2570 | 1946~1567 | 3120~6241 | 4.0~5.5 |
| 1 | 4.5C | 2340 | 1613~1299 | 2841~5682 | 3.0~4.0 |
| 1 | 4.5C | 2750 | 3451~2779 | 6435~12866 | 15~18.5 |
| 2 | 5.6C | 2500 | 2852~2297 | 5850~11670 | 11~15 |
| 2 | 5.6C | 2200 | 2099~1779 | 5148~10296 | 7.5~11 |
| 2 | 5.6C | 2000 | 1825~1470 | 4680~9360 | 5.5~7.5 |
| 2 | 5.6C | 2400 | 4225~3402 | 11445~22890 | 37 |
| 3 | 7.1C | 2350 | 4051~3262 | 11207~22409 | 30~37 |
| 3 | 7.1C | 2130 | 3328~2680 | 10158~20315 | 22~30 |
| 3 | 7.1C | 2000 | 2934~2363 | 9538~19075 | 18.5~22 |
| 3 | 7.1C | 1930 | 4390~3536 | 18746~37493 | 55~75 |
| 4 | 9C | 1800 | 3819~3075 | 17484~34967 | 45~55 |
| 4 | 9C | 1700 | 3406~2743 | 16512~33025 | 37~45 |
| 4 | 9C | 1570 | 2905~2340 | 15250~30499 | 30~37 |
| 4 | 9C | 1700 | 4105~3386 | 24363~48726 | 75 |
| 5 | 10C | 1620 | 3819~3075 | 21585~43170 | 55~75 |
| 5 | 10C | 1510 | 3318~2672 | 20119~40238 | 45~55 |
| 5 | 10C | 1900 | 3843~2289 | 19200~37400 | 90 |
| 6 | 8D | 1460 | 1985~1599 | 9960~19920 | 15 |
| 7 | 9D | 1470 | 2547~2051 | 14278~28557 | 22 |
| 8 | 10D | 1480 | 3187~2567 | 19719~39439 | 32~37 |
| 9 | 11D | 1480 | 3856~3106 | 24409~48819 | 45~55 |
| 10 | 11.2D | 1480 | 4215~3395 | 26678~53358 | 75~90 |
| 11 | 12.5D | 1480 | 4980~4010 | 38514~77029 | 110~132~160 |
Professional Support Throughout Every Stage — From Selection to After-Sales Maintenance
At Dajing blower, we are dedicated to providing clients with a comprehensive, one-to-one service experience.
Our process covers every stage — pre-sale technical consultation, in-sale production tracking, and after-sale “Private Manager” support — ensuring efficiency, safety, and customer satisfaction.
Expert Technicians for Your Equipment Needs
Each customer is assigned a professional engineer responsible for model selection and technical consultation. We use advanced CAD and CAPP software to provide accurate blower designs and simulate performance for various working conditions.
In-Sale: Full-Process Tracking Service
Your designated project manager monitors the entire process — from material selection, manufacturing, and testing, to shipment and installation. We ensure every blower meets strict quality standards and delivery deadlines.
After-Sale: Private Manager Service
After delivery, Dajing provides 24/7 “Private Butler” after-sales support. Our service follows the “1224 Standard”: respond within 1 hour, provide feedback within 2 hours, and resolve within 24 hours.
