4-68 Centrifugal blower
The 4-68 centrifugal blower is a meritorious product in the history of China’s blower industry. With its high efficiency, energy saving, low noise and stability, it has provided reliable ventilation solutions for many industrial and life fields in the past few decades. Although more new models and high-efficiency blowers have appeared, 4-68 blowers still play an important role in many occasions because of their mature technology, controllable cost and convenient maintenance.
Specifications:
Pressure range: 720–6531 Pa
Air volume: 1966–194495 m³/h
Power: 15 kW–1600 kW
Drive type: Direct drive / Coupling drive / Belt drive
Cooling method: Water cooling / Oil cooling (optional)
CONFIGURATION OPTIONS
1. CONSTRUCTION & MATERIALS
Impeller: Carbon steel; optional materials include FRP, stainless steel, rubber lining, wear-resistant coating, or ceramic coating.
Casing/Volute: Standard material is carbon steel; optional materials include FRP or stainless steel.
Main shaft: High-strength alloy steel.
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 No | Rotating Speed (r/min) | Full Pressure (Pa) | Air Volume (m³/h) | Power (kW) |
|---|---|---|---|---|---|
| 1 | 2.8A | 2900 | 970~657 | 1131~2262 | 1.1 |
| 1 | 2.8A | 1450 | 245~166 | 565~1131 | 0.55 |
| 2 | 3.15A | 2900 | 1245~853 | 1825~3435 | 1.5 |
| 2 | 3.15A | 1450 | 313~215 | 912~1718 | 0.55 |
| 3 | 3.55A | 2900 | 1608~1108 | 2708~5013 | 3.0 |
| 3 | 3.55A | 1450 | 402~274 | 1354~2507 | 0.55 |
| 4 | 4A | 2900 | 2069~1431 | 3984~7281 | 4.0 |
| 4 | 4A | 1450 | 519~353 | 1992~3641 | 0.75 |
| 5 | 4.5A | 2900 | 2657~1833 | 5790~10485 | 7.5 |
| 5 | 4.5A | 1450 | 666~460 | 2895~5242 | 1.1 |
| 6 | 5A | 2900 | 3314~2304 | 8050~14490 | 15.0 |
| 6 | 5A | 1450 | 823~578 | 4025~7245 | 2.2 |
| 7 | 6.3D | 1450 | 1323~921 | 8320~14761 | 5.5 |
| 7 | 6.3D | 960 | 578~402 | 5508~9773 | 2.2 |
| 8 | 8D | 1450 | 2157~1500 | 17585~30774 | 18.5 |
| 8 | 8D | 960 | 941~657 | 11643~20375 | 5.5 |
| 8 | 8D | 730 | 549~382 | 8853~15403 | 3.0 |
| 9 | 10D | 1450 | 3442~2422 | 35420~61179 | 55.0 |
| 9 | 10D | 960 | 1510~1059 | 23450~40505 | 18.5 |
| 9 | 10D | 730 | 872~617 | 17832~30801 | 7.5 |
| 10 | 12.5D | 960 | 2353~1657 | 45800~79111 | 55.0 |
| 10 | 12.5D | 730 | 1363~961 | 34828~60157 | 22.0 |
| 11 | 6.3C | 2240 | 3159~2196 | 12852~22803 | 22.0 |
| 11 | 6.3C | 2000 | 2510~1755 | 11476~20359 | 15.0 |
| 11 | 6.3C | 1800 | 2040~1422 | 10328~18324 | 11.0 |
| 11 | 6.3C | 1600 | 1608~1117 | 9180~16287 | 7.5 |
| 11 | 6.3C | 1400 | 1235~863 | 8032~14251 | 5.5 |
| 11 | 6.3C | 1250 | 980~686 | 7172~12724 | 4.0 |
| 11 | 6.3C | 1120 | 784~549 | 6426~11401 | 3.0 |
| 11 | 6.3C | 1000 | 627~441 | 5737~10179 | 2.2 |
| 11 | 6.3C | 900 | 509~353 | 5164~9162 | 1.5 |
| 11 | 6.3C | 800 | 402~284 | 4590~8144 | 1.1 |
| 12 | 8C | 1800 | 3314~2314 | 21830~38202 | 37.0 |
| 12 | 8C | 1600 | 2618~1833 | 19404~33958 | 30.0 |
| 12 | 8C | 1400 | 2009~1401 | 16799~29713 | 18.5 |
| 12 | 8C | 1250 | 1597~1117 | 15159~26528 | 15.0 |
| 12 | 8C | 1120 | 1284~892 | 13583~23770 | 11.0 |
| 12 | 8C | 1000 | 1019~715 | 12128~21224 | 7.5 |
| 12 | 8C | 900 | 833~578 | 10915~19101 | 5.5 |
| 12 | 8C | 800 | 657~460 | 9702~16979 | 4.0 |
| 12 | 8C | 710 | 519~362 | 8611~15069 | 3.0 |
| 12 | 8C | 630 | 402~284 | 7641~13371 | 2.2 |
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.
