4-73 Series Centrifugal Exhaust Blower Fan – High-Power Industrial Ventilation Blower

• Customization: Available
• Application: Ventilation Fan
• Type: Mine Fan
• Model NO.: 4-73
• Phase: Three
• Operation Condition: Indoor
• Usage: Protection
• Winding Form: Single Layer & Tightly Wound Type
• Insulating Medium: Epoxy Resin
• Installation: Extension Type
• Magnetic Circuit Structure: Combined Type
• Voltage Transformation Principle: Electromagnetic Type
• Life Time: 40000h+
• Type of Protection: IP55 / IP65
• Rotor: Electrophoresis
• After-Sales Service Provided: Online
• Color: Green, Red, Blue, Yellow, Purple, Silver etc.
• Transport Package: Wooden Packing
• Specification: Different models, different sizes
• Trademark: HNDING
• Origin: Shandong, China
• HS Code: 8414593000
• Production Capacity: 10, 0000 Units/Year
• Package Size: 1455.00cm * 1150.00cm * 1250.00cm
• Package Gross Weight: 1050.000kg

Product Description

4-73 Series Centrifugal Exhaust Blower Fan – High-Power Industrial Ventilation Blower

The 4-73 Series Centrifugal Exhaust Blower Fan delivers exceptional ventilation performance for industrial facilities, manufacturing plants, and large-scale commercial spaces. Engineered for high-pressure airflow and maximum efficiency, this heavy-duty blower fan is ideal for HVAC systems, fume extraction, dust collection, and process cooling where reliable air movement is critical.

Why Choose the 4-73 Series?
 Proven Reliability – Built for 24/7 continuous operation in extreme conditions.
 Low Maintenance – Sealed bearings and easy-access panels for hassle-free servicing.
 Compliance Ready – Meets ISO, OSHA, and ASHRAE standards for industrial safety.

The 4-73 Series Centrifugal Exhaust Blower Fan is the ultimate solution for high-power industrial airflow needs. Contact us for custom sizing, motor options, and technical support to match your exact requirements.

Specification

Applications

HVAC & Ventilation Systems – Provides powerful air exchange in factories, warehouses, and large buildings.
Dust & Fume Extraction – Effectively removes wood dust, metal particles, chemical fumes, and smoke.
Process Cooling & Drying – Supports industrial ovens, kilns, and drying systems.
Mining & Chemical Plants – Handles corrosive gases and high-temperature airflows.

Key Configurations

High-Power Industrial Performance – Robust motor (customizable from 1.5kW to 250kW) generates high static pressure and CFM for large-scale ventilation.

 Durable & Corrosion-Resistant – Constructed with stainless steel, galvanized steel, or coated alloys for long-lasting operation in harsh environments.

 Energy-Efficient Operation – Aerodynamically optimized impeller design reduces power consumption while maintaining strong airflow.

 Low Noise & Vibration – Precision-balanced fan wheel ensures quiet, smooth operation even at high speeds.

 Versatile Mounting Options – Designed for roof, wall, or ducted installation to fit your facility's layout.

 Customizable Configurations – Available in explosion-proof (ATEX), high-temperature, and variable-speed models.

Right elevation

Left elevation

Front elevation

Technical Specifications

(Custom configurations available upon request.)

4-72 centrifugal fan performance table
Machine Number	Rotating Speed r/min	Flow m3/h	Full Pressure Pa	Full Pressure %	Full Pressure KW	Required power KW	Electric motor
							Model	Power kw
3.2A	2900	1688	1300	69.3	0.88	1.23	Y90L-2 (B35)	2.2
		1955	1263	73.2	0.93	1.31
		2209	1220	75.5	0.99	1.38
		2476	1160	76.8	1.03	1.34
		2729	1091	76.9	1.07	1.39
		2996	1006	75.6	1.1	1.43
		3250	918	73.2	1.13	1.47
		3517	792	69.3	1.11	1.45
4A	2900	4012	2014	77	2.89	3.47	Y132S1-2 (B35)	5.5
		4506	1969	80.3	3.05	3.66
		4973	1915	82.5	3.18	3.82
		5468	1830	84.1	3.28	3.94
		5962	1723	84.6	3.35	4.02
		6457	1606	83.7	3.42	4.11
		6924	1459	81.4	3.43	4.11
		7419	1320	77.5	3.49	4.19
4.5A	2900	5712	2554	77	5.21	6	Y132S2-2(B35)	7.5

Drawings & Dimensions

Detailed CAD drawings and dimensional diagrams are available for download here or upon inquiry. Our engineering team can provide tailored designs to meet specific project requirements.

After Sales Service

Standard Warranty: 18 months or 5,000 operating hours (whichever comes first).
Extended Warranty: Optional coverage up to 36 months.
Global Support: 24/7 technical assistance and spare parts supply.
Training: On-site or remote operation/maintenance training.

Company Profile

Zibo HengDing Fan Co., Ltd.

Zibo Hengding Fan Co., Ltd. is located in Industrial Park, Beijiao Town, Zhoucun District, Zibo City, Shandong Province, China. The company covers an area of 12,000 square meters and a construction area of 8,000 square meters. The company has total assets of 32 million RMB and 186 employees, 46 engineers, and technicians. It has passed ISO9001 quality management system certification and has maintained long-term technical cooperation relationships with many colleges and universities, such as Xi'an Jiaotong University, Tianjin Nankai University, and so on. Now, it has developed into a modern ventilation equipment manufacturing enterprise with first-class testing and producing equipment, high-quality and excellent production molds, strong scientific research and development strength, a strict quality management system, and gradually perfected development. The company has 18 years of production experience, with an annual output of 7,000 sets of ventilators.

Why chose us?

Other Products

 Zero Ignition Risk – Non-sparking materials and hermetically sealed motor.
Global Compliance – Meets ATEX (EU), IECEx (global), and MSHA (US) standards.
Rugged Durability – Withstands high humidity, corrosive gases, and vibrations.
 Custom Configurations – Adjust size, airflow, voltage, and control systems (VFD/IoT).
 3-Year Warranty – Backed by 24/7 technical support.

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FAQ

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Q: What's the lead time for orders?
A: Standard models ship in 5–10 days; customized units require 10–30 days.

Q: Do you provide after-sales service overseas?
A: Yes, we have partnered service centers in key regions.

Q: Can I request a customized bucket size?
A: Absolutely! We offer tailored attachments.

Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).

Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.