GY4-68 Centrifugal Blower
The GY4-48 centrifugal ventilation fan is mainly designed for the ventilation and air intake systems of steam boilers with an evaporation capacity of up to 230 t/h in thermal power plants.
It can also be used for mine ventilation and general ventilation applications, provided the performance requirements are similar and no special conditions are involved.
This fan series features high efficiency, low noise, and strong structural reliability.
Specifications:
Pressure range: 863 – 6693 Pa
Air volume: 16 985 – 96429 m³/h
Impeller diameter: Approx. 800 – 1600 mm
Speed: 580 – 1450 r/min
Drive type: Belt drive / Direct coupling
Cooling method: Air cooling（Water or oil cooling optional）
Applicable boiler capacity: ≤ 230 t/h steam boiler
Main features: High efficiency, low noise, high structural strength, suitable for industrial boilers, mine ventilation, and general ventilation systems.
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 | 8D | 1450 | 2177~1481 | 16985~30134 | 18.5 |
| 2 | 9D | 1450 | 2756~1873 | 24183~42906 | 30 |
| 2 | 9D | 960 | 1206~824 | 16101~28407 | 11 |
| 3 | 10D | 1450 | 3403~2315 | 33173~58856 | 55 |
| 3 | 10D | 960 | 1491~1010 | 21963~38966 | 15 |
| 3 | 10D | 730 | 863~588 | 16701~29631 | 7.5 |
| 4 | 11.2D | 1450 | 4276~2903 | 46606~82688 | 90 |
| 4 | 11.2D | 960 | 1873~1275 | 30856~54745 | 30 |
| 4 | 11.2D | 730 | 1079~736 | 23464~41629 | 15 |
| 5 | 12.5D | 1450 | 5325~3619 | 64791~114592 | 160 |
| 5 | 12.5D | 960 | 2334~1589 | 42879~76160 | 45 |
| 5 | 12.5D | 730 | 1353~912 | 32619~57872 | 22 |
| 6 | 14D | 1450 | 6679~4531 | 91027~161499 | 250, 315 |
| 6 | 14D | 960 | 2923~1974 | 60266~106924 | 90 |
| 6 | 14D | 730 | 1697~1147 | 45827~81307 | 37 |
| 7 | 16D | 960 | 3825~2599 | 89960~159066 | 160 |
| 7 | 16D | 730 | 2207~1501 | 68407~121367 | 75 |
| 7 | 16D | 580 | 1393~951 | 54351~96429 | 45 |
| 1 | 8D | 1450 | 1540~1059 | 15889~29038 | 15 |
| 2 | 9D | 1450 | 1952~1344 | 22623~41345 | 22, 30 |
| 2 | 9D | 960 | 853~588 | 14978~27374 | 7.5 |
| 3 | 10D | 1450 | 2413~1657 | 31033~56715 | 45 |
| 3 | 10D | 960 | 1059~726 | 20546~37549 | 15 |
| 3 | 10D | 730 | 608~422 | 15623~28553 | 5.5 |
| 4 | 11.2D | 1450 | 3021~2079 | 43599~79681 | 75 |
| 4 | 11.2D | 960 | 1324~912 | 28866~52754 | 22 |
| 4 | 11.2D | 730 | 765~530 | 21950~40115 | 11 |
| 5 | 12.5D | 1450 | 3766~2589 | 60611~110772 | 110, 132 |
| 5 | 12.5D | 960 | 1648~1138 | 40129~73339 | 37 |
| 5 | 12.5D | 730 | 951~657 | 30155~55768 | 18.5 |
| 6 | 14D | 1450 | 4727~3246 | 85145~155627 | 250 |
| 6 | 14D | 960 | 2069~1422 | 56378~103306 | 75 |
| 6 | 14D | 730 | 1197~824 | 42871~78350 | 30 |
| 7 | 16D | 960 | 2707~1854 | 84156~153803 | 110, 132 |
| 7 | 16D | 730 | 1559~1079 | 63994~116594 | 55 |
| 7 | 16D | 580 | 991~677 | 50844~92922 | 45 |
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.
