Description
External Rotor Corner Exhaust Fan
Engineered for powerful air extraction in demanding industrial environments. The LWWEX-OR features a high-efficiency external rotor motor and thickened carbon steel casing, integrating rain and insect protection for a robust, space-saving exterior wall installation.
Key Technical Features
Engineered for heavy-duty extraction, exterior durability, and reliable air delivery.
Thickened Casing
Carbon steel housing with a precision spray-painted finish ensures extended durability and rust protection.
Copper Ex Motor
Explosion-proof pure copper motor securely sealed to lower routine maintenance burdens.
High-Efficiency
Optimized impeller blade angles deliver smoother, stable airflow while reducing operating load.
Weather Proof
Sloped exterior design channels rainwater away, while dense metal mesh prevents insect and debris entry.
Technical Specifications
LWWEX-OR Series dimensional parameters and performance data across standard models.
Dimensions (mm) - Selected Models
| Model | A | B | C | D | E | F | Weight (kg) |
|---|---|---|---|---|---|---|---|
| LWWEX-OR-2A | 271 | 200 | 206 | 331 | 4-Φ8 | Φ200 | 13.0 |
| LWWEX-OR-3A | 341 | 200 | 256 | 401 | 4-Φ8 | Φ300 | 18.0 |
| LWWEX-OR-4A | 481 | 200 | 357 | 541 | 4-Φ8 | Φ400 | 27.7 |
| LWWEX-OR-5A | 591 | 200 | 433 | 651 | 4-Φ8 | Φ500 | 39.0 |
| LWWEX-OR-6A | 671 | 200 | 490 | 731 | 4-Φ8 | Φ600 | 52.0 |
Performance Data
| Model | Voltage (V) | Power (W) | Speed (r/min) | Air Volume (m³/h) | Total Pressure (Pa) | Noise dB(A) |
|---|---|---|---|---|---|---|
| LWWEX-OR-2A-0.07-2P-1-001 | 220 | 70 | 2650 | 1080 | 180 | 57 |
| LWWEX-OR-3A-0.18-2P-1-001 | 220 | 180 | 2550 | 3300 | 260 | 67 |
| LWWEX-OR-4A-0.19-4P-1-001 | 220 | 190 | 1420 | 4800 | 150 | 68 |
| LWWEX-OR-5A-0.37-4P-1-001 | 220 | 370 | 1400 | 8850 | 200 | 74 |
| LWWEX-OR-6A-0.75-4P-1-001 | 220 | 750 | 1400 | 13000 | 270 | 78 |
Thickened Carbon Steel Casing
Built to withstand constant exposure in heavy industrial zones, the main body is constructed from thickened carbon steel. It is precisely cut and formed to ensure a smooth, flat surface with structural integrity.
The exterior features a durable spray-painted finish, offering excellent wear resistance, rust protection, and high hardness. This extends the exhaust fan's durability and protects internal components from harsh outdoor elements.
- Heavy-duty construction — Thickened steel prevents warping under pressure
- Spray-painted finish — Strong rust and corrosion resistance
- Extended durability — Withstands tough exterior industrial environments
Powerful Air Extraction
The LWWEX-OR series is engineered to quickly remove hot, stale, and odorous air from your facility. By rapidly extracting contaminated air, it vastly improves indoor airflow.
With high-efficiency volumetric exchange, this corner exhaust fan creates a significantly safer and more comfortable working environment for production floors, chemical plants, and logistics centers.
- High-volume exhaust — Capacities up to 13,000 m³/h
- Quick heat removal — Prevents equipment and workspace overheating
- Improves air quality — Clears out stale and odorous air rapidly
High-Efficiency Impeller Design
The fan incorporates a high-efficiency impeller featuring optimized blade angles and carefully engineered airflow passages. This specific aerodynamic profile ensures optimal air intake and expulsion.
This design delivers smoother, more stable air output while simultaneously reducing the operating load on the motor, translating to lower energy consumption and less mechanical wear over long operational cycles.
- Optimized blade angles — Maximizes airflow stability
- Smooth air passage — Reduces aerodynamic turbulence
- Lower motor load — Enhances overall energy efficiency
Space-Saving Wall Installation
Maximizing operational floor space is critical in modern facilities. The LWWEX-OR features a square wall-mounted structure engineered to fit directly into a reserved wall opening.
By mounting securely within the wall profile, the fan keeps critical indoor aisles, walkways, and equipment areas entirely clear, making it an ideal exhaust solution for tight production environments.
- Direct wall mount — Fits perfectly into standard reserved openings
- Zero floor footprint — Keeps warehouse and factory aisles clear
- Secure fitment — Robust structural frame secures tightly to the exterior wall
Explosion-Proof Pure Copper Motor
At the core of the LWWEX-OR is a high-performance explosion-proof motor built with pure copper coils. This ensures strong sealing, excellent heat dissipation, and sufficient power to maintain continuous airflow output.
The external rotor design allows the motor to directly drive the impeller. This eliminates the need for belts or complex transmission parts, drastically lowering routine maintenance burdens and improving system reliability.
- Pure copper coils — Superior conductivity and thermal stability
- External rotor direct-drive — Compact, highly efficient, and low maintenance
- Explosion-proof sealing — Rated for safe operation in demanding zones
Insect & Rain Proof Cover
Built specifically for exterior wall exposure, the unit integrates a durable protective hood. The sloped design quickly channels rainwater away from the fan opening, preventing moisture ingress.
Beneath the hood, a dense metal mesh provides a physical barrier that helps prevent insects, leaves, and larger outdoor debris from entering the ventilation system, guaranteeing long-lasting protection.
- Sloped weather hood — Deflects rain and shields the internal motor
- Dense metal mesh — Blocks bugs, leaves, and large debris
- Exterior ready — Ensures reliable outdoor operation year-round
Low Noise, Stable Operation
Despite its powerful extraction capabilities, the LWWEX-OR is engineered for acoustic stability. The optimized fan structure and balanced external rotor mechanism significantly reduce mechanical vibration and operating noise.
This stable, low-noise profile makes the exhaust fan highly suitable for continuous, all-day ventilation in workshops, warehouses, and equipment rooms without causing excessive noise fatigue for personnel.
- Vibration reduction — Rigid housing and balanced external rotor
- Continuous duty — Stable operation for long industrial shifts
- Worker comfort — Controlled noise output in busy environments
Ideal for Industrial Applications
The LWWEX-OR series provides safe, high-volume exhaust for facilities requiring heavy-duty exterior wall ventilation.
Factory Workshops
Removes heat and stale air, maintaining a comfortable temperature and improving air quality for workers.
Warehouses & Logistics
Provides massive exhaust airflow to prevent heat and moisture buildup in expansive storage facilities.
Oil & Gas Facilities
Safely extracts volatile fumes using its explosion-proof motor design, suited for refineries and processing sites.
Chemical Processing
Reliably exhausts corrosive vapors and hazardous gases, meeting strict industrial safety standards.
Painting & Coating
Reliable extraction of flammable paint fumes where spark-resistant exhaust components are required.
Battery Manufacturing
Prevents the dangerous accumulation of explosive off-gases during battery charging and assembly.
Pump & Equipment Rooms
Extracts excess heat generated by heavy machinery to prevent critical equipment overheating.
Hazardous Material Storage
Continuous, spark-resistant ventilation prevents the buildup of toxic or combustible vapors in enclosed zones.
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, including our EX-rated explosion-proof series, 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 installation.
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 LWWEX-OR External Rotor Corner Exhaust Fan.
What is the benefit of the external rotor motor design?
The external rotor design allows the motor to directly drive the impeller. This creates a highly compact structure, reduces mechanical transmission losses, and significantly lowers routine maintenance burdens compared to belt-driven alternatives.
Is the LWWEX-OR suitable for outdoor weather exposure?
Yes, it is specifically designed for exterior wall installation. The unit features an integrated insect and rain-proof cover with a sloped design that quickly channels rainwater away, while a dense metal mesh blocks leaves and debris.
What material is the casing made of?
The main casing is constructed from precisely cut and formed thickened carbon steel. It is finished with a protective spray-paint coating that provides excellent wear resistance, rust protection, and high hardness.
Does this fan take up indoor floor space?
No. The square wall-mounted structure fits directly into a reserved wall opening. This space-saving installation keeps your indoor aisles, walkways, and equipment areas entirely clear.
What is the maximum airflow capacity of this series?
The LWWEX-OR series includes models with impeller diameters from 200mm up to 600mm, delivering powerful air extraction volumes ranging from 1,080 m³/h up to 13,000 m³/h.
Need a Quote or Custom Specifications?
Tell us your airflow, static pressure, and facility requirements — our engineers will size the right LWWEX-OR model and provide a quote within 1 business day.
