Description
High Efficiency Low Noise Axial Fan
Designed for reliable and powerful ventilation in demanding industrial environments. The LWAF35-11 is engineered with heavy-duty steel blades and a high-power all-copper motor to deliver massive air volume while ensuring whisper-quiet, stable operation.
Key Technical Features
Built for rigorous industrial safety, low-noise efficiency, and reliable high-volume air delivery.
Thickened Steel Blades
Heavy-duty, precision-balanced steel blades deliver superior aerodynamics, powerful airflow, and exceptional running stability.
All-Copper Motor
Thickened copper-core coils provide strong power, high efficiency, and low temperature rise for an extended service life.
Safety Mesh Guard
High-strength safety mesh effectively minimizes hazards and prevents foreign objects from entering the blade chamber.
Thickened Casing
Carbon steel casing finished with a protective paint coating repels oil/dirt, offering outstanding shockproof performance.
Technical Specifications
LWAF35-11 Series dimensional parameters and performance data across standard models.
Dimensions (mm) - Selected Models
| Model | D1 (Inner Dia) | A | B | L (Length) | Weight (kg) |
|---|---|---|---|---|---|
| LWAF35-11-2.8A | 293 | 350 | 350 | 295 | 10.9 |
| LWAF35-11-3.55A | 369 | 440 | 440 | 340 | 18.0 |
| LWAF35-11-4.5A | 464 | 540 | 540 | 390 | 20.5 |
| LWAF35-11-5.6A | 575 | 640 | 640 | 420 | 42.0 |
| LWAF35-11-7.1A | 724 | 810 | 810 | 555 | 71.0 |
| LWAF35-11-9A | 905 | 1005 | 1005 | 645 | 140.0 |
| LWAF35-11-11.2A | 1140 | 1240 | 1240 | 815 | 247.0 |
Performance Data - Selected Models
| Model | Speed (r/min) | Flow Rate (m³/h) | Total Pressure (Pa) | Matching Motor (kw) |
|---|---|---|---|---|
| LWAF35-11-2.8A-0.25-2P-1-001 | 2900 | 2921 | 186 | 0.25 |
| LWAF35-11-3.55A-0.75-2P-1-001 | 2900 | 5965 | 300 | 0.75 |
| LWAF35-11-4.5A-0.37-4P-1-001 | 1450 | 6070 | 120 | 0.37 |
| LWAF35-11-5.6A-1.1-4P-1-001 | 1450 | 11682 | 186 | 1.10 |
| LWAF35-11-7.1A-3-4P-1-001 | 1450 | 23815 | 300 | 3.00 |
| LWAF35-11-9A-3-6P-1-001 | 960 | 32119 | 211 | 3.00 |
| LWAF35-11-11.2A-7.5-6P-1-001 | 960 | 61091 | 337 | 7.50 |
Thickened Carbon Steel Casing
The fan housing is built to endure the harshest factory conditions. Constructed from thickened carbon steel, the casing features high hardness and excellent resistance to deformation under continuous load.
The entire surface is precisely cut, formed, and finished with a premium protective paint coating that repels industrial oil and dirt, while simultaneously delivering outstanding shockproof and drop-proof performance.
- High hardness steel — Excellent resistance to operational deformation
- Protective paint coating — Repels industrial oil, dirt, and rust
- Shockproof performance — Endures bumps and vibrations in active sites
Thickened Steel Fan Blades
The impeller is crafted from heavy-duty, high-strength steel. Each blade assembly undergoes strict dynamic testing to ensure it is precision-balanced before it leaves the factory.
This superior aerodynamic profile allows the fan to deliver powerful airflow while maintaining whisper-quiet operation. The combination of rigid design and high-strength material guarantees exceptional running stability over long operational cycles.
- Heavy-duty steel blades — High strength and durability
- Precision-balanced — Ensures whisper-quiet, stable operation
- Superior aerodynamics — Maximizes powerful volumetric airflow
High Airflow Performance
Whether used for exhausting heat or supplying fresh oxygen, the LWAF35-11 series excels in massive volume delivery. The large-diameter axial fan blades are calibrated to generate powerful, concentrated airflow.
This capability allows the fan to quickly improve air circulation in expansive areas (up to 61,000 m³/h), providing highly efficient and rapid ventilation for stifling or smoke-filled industrial environments.
- Large-diameter blades — Available up to 1140 mm inner diameter
- Massive air volume — Delivers over 61,000 m³/h
- Quick air circulation — Rapidly clears heat, smoke, and stuffy air
High-Power All-Copper Motor
At the heart of the LWAF35-11 fan is a high-power industrial motor. Equipped with thickened copper-core coils, the motor provides superior conductivity and highly efficient energy transfer.
This optimized electrical design delivers strong power while keeping the temperature rise exceptionally low. The result is a highly reliable drive system that ensures durable performance and a long service life, even under 24/7 continuous duty.
- Thickened copper-core coils — Maximizes electrical efficiency
- Low temperature rise — Protects the motor during continuous duty
- Durable performance — Guarantees a long operational service life
Flexible Installation Options
Industrial layouts are complex, and ventilation equipment must be adaptable. The LWAF35-11 series accommodates a wide range of installation requirements across different applications.
The unit is primarily available in two versatile configurations: the 'Duct Type' featuring flanged ends for seamless integration into existing pipeline systems, and the 'Fixed Type' housed in a robust square cabinet for standalone or structural mounting.
- Duct Type — Flanged cylindrical design for inline pipe connections
- Fixed Type — Square cabinet design for secure floor or structural mounting
- Highly Adaptable — Fits seamlessly into complex HVAC setups
Safety Mesh Guard Design
Safety is paramount when operating high-volume industrial machinery. The LWAF35-11 series comes equipped with a high-strength protective mesh guard securely installed over the blade chamber.
This robust metal barrier effectively minimizes potential hazards by preventing hands, loose clothing, or tools from making accidental contact with the spinning impeller, while simultaneously guaranteeing that foreign objects cannot enter and damage the internal components.
- High-strength construction — Resists impacts and bending
- Minimizes hazards — Prevents accidental contact with the impeller
- Protects internal parts — Stops foreign objects from entering
Stable & Low Noise Operation
Industrial fans do not have to be disruptively loud. The LWAF35-11 series prioritizes acoustic comfort through a meticulously balanced rotor and blade design.
By eliminating imbalance, the unit drastically reduces mechanical vibration and aerodynamic noise. This ensures whisper-quiet and smooth operation, making it ideal for maintaining a comfortable auditory environment during extended working shifts.
- Balanced fan design — Drastically reduces operational vibration
- Acoustic optimization — Lowers aerodynamic noise generation
- Smooth operation — Ideal for continuous, extended working hours
Wide Industrial Applications
A versatile and quiet solution for high-volume air delivery and exhaust in diverse industrial areas.
Factory Workshops
Provides powerful exhaust for production lines without disrupting the auditory environment of workers.
Warehouses
Ensures massive cross-ventilation to prevent heat buildup and moisture in expansive storage spaces.
Construction Sites
Rugged design allows for easy positioning to dry paint, clear dust, or supply fresh air to active builds.
Basements & Underground
Efficiently clears exhaust emissions and stagnant, humid air from enclosed lower-level areas.
Tunnel Ventilation
Utilizes duct installation types to push fresh oxygen deep into long excavation or transit tunnels.
Equipment Cooling
Delivers a high-velocity, localized air stream to rapidly cool down overheating heavy machinery and motors.
Confined Space
Ensures a safe breathing atmosphere inside storage tanks, silos, and manholes prior to maintenance entry.
Maintenance Areas
Quickly extracts welding fumes and chemical odors, providing a safe working environment for service teams.
LONGWELL — Trusted Industrial Fan Manufacturer Since 1990
Founded in 1990 in Yuyao, Ningbo, LONGWELL has grown into a vertically integrated ventilation technology group. We engineer standard and explosion-proof fan and motor systems with 4,000 m²+ of manufacturing floor, dedicated aerodynamics labs, and a global export network.
Every LONGWELL fan is built on automated lines, featuring computer-balanced impellers and 100% run-testing before shipment. We are certified to ISO 9001:2015 and ISO 14001, ensuring the highest standards of safety and reliability for hazardous and industrial applications.
Production & Quality Control
Strict quality control, automated assembly, and robust packaging ensure your fans arrive ready for action.
Global Market Presence
LONGWELL exhaust fans are the preferred choice for EPC contractors and industrial clients worldwide.
Trusted by Leading Brands
We supply reliable industrial ventilation solutions to top-tier global manufacturers.
Professional & Certified
Our products meet stringent international safety, quality, and performance standards.
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View Product →Frequently Asked Questions
Quick answers about the LWAF35-11 High-Efficiency Low Noise Axial Fan.
How does the LWAF35-11 achieve its low-noise performance?
The fan achieves whisper-quiet operation through thickened, heavy-duty steel blades that are precision-balanced using strict dynamic testing. This superior aerodynamic design minimizes mechanical vibration, ensuring smooth operation during extended working hours.
What material is the fan casing made of?
The casing is constructed from thickened carbon steel. It is precisely cut and formed with a smooth, spray-painted finish, offering excellent wear resistance, rust protection, and high hardness for extended industrial durability.
What are the installation options for this fan series?
The LWAF35-11 series offers flexible installation options to suit different facility layouts. It is primarily available in 'Duct Type' for inline pipe integration and 'Fixed Type' for standalone or structural mounting.
Is the internal motor protected?
Yes, the unit features a high-strength safety mesh guard design. This protective barrier prevents accidental contact with the impeller and effectively stops foreign objects from entering the fan, ensuring safe and durable service.
What is the airflow capacity of the LWAF35-11 series?
This series is built for massive air volume. With inner diameters ranging from 293mm up to 1140mm, the fans can deliver airflow rates starting from 1,464 m³/h all the way up to an impressive 61,091 m³/h for the largest model.
Need a Quote or Custom Specifications?
Tell us your airflow, static pressure, and installation requirements — our engineers will size the right LWAF35-11 model and provide a quote within 1 business day.
