Description
External Rotor Energy-saving Centrifugal Fan
Advanced external rotor motor and precision forward curved impellers engineered for high static pressure, smooth air discharge, and low operating noise in demanding industrial ventilation systems.
Why Choose the LWERC Series
Engineered with high-efficiency external rotor motors and aerodynamic forward-curved blades for stable industrial air delivery.
Forward Curved Impeller
Optimized blade geometry converts motor power into stable airflow and high pressure, reducing turbulence and energy loss.
All-Copper Motor
Thickened copper-core windings ensure low operational temperature rise, high electrical efficiency, and dependable long life.
Metal Protective Mesh
Rugged inlet guard prevents accidental contact with moving parts and blocks oversized foreign debris from entering the housing.
Low Noise Operation
Precision housing structure and dynamic balancing keep operating noise strictly controlled at 62 dB(A) for indoor environments.
Product Specifications
Complete performance parameters and dimensional data for LWERC series centrifugal fans (220V single-phase & 380V three-phase).
| Model | Voltage (V) | Power (W) | Speed (r/min) | Air Volume (m³/min) | Total Pressure (Pa) | Noise dB(A) |
|---|---|---|---|---|---|---|
| LWERC-1A-0.06-2P-1-001 | 220 | 60 | 2600 | 3.2 | 280 | 62 |
| LWERC-1A-0.06-2P-3-002 | 380 | 60 | 2600 | 3.2 | 280 | 62 |
| LWERC-2A-0.12-2P-1-001 | 220 | 120 | 2600 | 3.6 | 300 | 62 |
| LWERC-2A-0.12-2P-3-002 | 380 | 120 | 2600 | 3.6 | 300 | 62 |
| LWERC-3A-0.18-2P-1-001 | 220 | 180 | 2600 | 3.9 | 320 | 62 |
| LWERC-3A-0.18-2P-3-002 | 380 | 180 | 2600 | 3.9 | 320 | 62 |
| LWERC-4A-0.2-2P-1-001 | 220 | 200 | 2600 | 8.5 | 400 | 62 |
| LWERC-4A-0.2-2P-3-002 | 380 | 200 | 2600 | 8.5 | 400 | 62 |
| LWERC-5A-0.24-2P-1-001 | 220 | 240 | 2600 | 9.2 | 430 | 62 |
| LWERC-5A-0.24-2P-3-002 | 380 | 240 | 2600 | 9.2 | 430 | 62 |
| Model | A1 | A2 | A3 | A4 | B1 | B2 | B3 | B4 | N1-D1 | A | B | C | D | E | F | G | H | I | J | K | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LWERC-1A | 100 | 78 | 63 | / | 80 | 58 | 46 | / | 4-Φ8 | 176 | 225 | 183 | 66 | 80 | 100 | 107 | 185 | 124 | 130 | 150 | 2.8 |
| LWERC-2A | 100 | 78 | 63 | / | 80 | 58 | 46 | / | 4-Φ8 | 176 | 225 | 183 | 66 | 80 | 100 | 107 | 185 | 124 | 130 | 150 | 2.8 |
| LWERC-3A | 118 | 102 | 78 | 48 | 118 | 100 | 82 | 50 | 12-Φ4 | 206 | 263 | 220 | 92 | 80 | 100 | 129 | 203 | 133 | 130 | 150 | 4.5 |
| LWERC-4A | 118 | 102 | 78 | 48 | 118 | 100 | 82 | 50 | 12-Φ4 | 206 | 263 | 220 | 92 | 80 | 100 | 129 | 203 | 133 | 130 | 150 | 4.5 |
| LWERC-5A | 118 | 102 | 78 | 48 | 118 | 100 | 82 | 50 | 12-Φ4 | 206 | 263 | 220 | 92 | 80 | 100 | 129 | 203 | 133 | 130 | 150 | 4.5 |
Forward Curved Impeller
The optimized blade arrangement converts motor power into stable airflow and strong static pressure, helping reduce airflow turbulence, operating noise, and energy loss for efficient, reliable ventilation.
Each impeller is precision balanced to ensure smooth rotation, high static pressure output, and long-term mechanical reliability under continuous industrial operation.
- Optimized blade angles — higher airflow efficiency and static pressure
- Low turbulence design — minimizes internal aerodynamic loss
- Dynamic balancing — reduces vibration for quiet continuous duty
Large Air Outlet Design
The wide rectangular outlet enables smoother air discharge, reduces airflow resistance, and supports stable ventilation while allowing easy connection to standard industrial air ducts.
Designed to integrate seamlessly into equipment cabinets, HVAC duct networks, and ventilation housings without restricting velocity.
- Wide rectangular discharge — lowers exit velocity pressure loss
- Easy duct connection — fits standard ducting flanges securely
- Smooth airflow discharge — maintains uniform velocity profile
All-Copper Motor
Thickened copper-core wires ensure low temperature rise, high electrical efficiency, and long-lasting operation, delivering ultra-strong airflow under heavy industrial loads.
The external rotor construction integrates the motor directly into the impeller hub for optimal cooling and a compact footprint.
- Thickened copper windings — superior electrical conductivity and durability
- Low temperature rise — ensures 24/7 continuous duty reliability
- External rotor structure — compact, balanced, and efficient cooling
Metal Protective Mesh & Low Noise
The inlet guard helps prevent accidental contact with rotating components and reduces the risk of larger objects entering the fan, while optimized internal structure keeps operating noise down to 62 dB(A).
Engineered for safe operation in workshops, commercial equipment rooms, and ventilation enclosures where safety and acoustic comfort are essential.
- Sturdy inlet guard — blocks debris and enhances operational safety
- 62 dB(A) acoustic control — low noise for indoor workstations
- Vibration damping — stable housing structure for continuous running
Wide Industrial Applications
Designed for reliable continuous ventilation across HVAC systems, equipment cooling, and industrial enclosures.
HVAC Ventilation Systems
Delivers stable air distribution across commercial and industrial building duct networks.
Industrial Equipment Cooling
Provides high static pressure to cool heavy-duty machinery and industrial installations.
Machinery & Electrical Cabinets
Extracts localized heat from control panels and electrical enclosures effectively.
Drying & Heating Equipment
Maintains high-temperature resistant airflow circulation in drying systems.
Kitchen Exhaust Systems
Reliable grease and fume extraction for commercial and industrial kitchens.
Air Purification Equipment
Pushes air through multi-stage filtration units in environmental cleaning systems.
Printing & Packaging Machinery
Supplies precise cooling and drying air jets for high-speed automated production.
Factory Workshops & Warehouses
Continuous air exchange to remove stale air and control indoor climate.
LONGWELL — Trusted Industrial Fan Manufacturer Since 1990
Founded in 1990 in Yuyao, Ningbo — the heart of China’s advanced manufacturing belt — LONGWELL has grown from a precision fan component workshop into a vertically integrated ventilation technology group. Today we engineer AC, DC and EC fan and motor systems with 4,000 m²+ of manufacturing floor, dedicated aerodynamics and CFD simulation labs, and a global export network spanning Europe, the Americas and Asia-Pacific.
From material selection to final balancing, every LONGWELL fan is built on automated lines, computer-balanced impellers and 100% run-test before shipment. We are certified to ISO 9001:2015 and ISO 14001, with CE, UL/ETL, RoHS and EAC compliance, and performance tested to the AMCA 210/211 method.
Production & Delivery
Automated lines, computer-balanced impellers and 100% run-test ensure every LWERC fan ships ready for installation.
Global Market & Client Preference
LWERC series is the preferred centrifugal fan for HVAC distributors, equipment manufacturers and OEM clients across Europe, the Middle East, Southeast Asia, and South America.
Trusted by Leading Global HVAC Brands
24+ HVAC OEMs and equipment builders rely on LONGWELL for industrial centrifugal fans every year.
Complete Range of Professional & Certified
LONGWELL fans are independently certified to international quality, safety and energy-efficiency standards.
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View Product →Frequently Asked Questions
Quick technical answers regarding the LWERC series centrifugal fan.
What are the main advantages of the LWERC external rotor centrifugal fan?
The LWERC series features a high-efficiency external rotor motor combined with an aerodynamically optimized forward-curved impeller. It delivers high static pressure performance, uniform airflow discharge, all-copper motor reliability, and stable low-noise operation at 62 dB(A).
What voltage and power options are available for the LWERC series?
The LWERC series offers both 220V single-phase and 380V three-phase electrical configurations, with power ratings ranging from 60W (LWERC-1A) to 240W (LWERC-5A) across 5 primary frame sizes.
How does the forward curved impeller improve fan performance?
The optimized forward curved blade arrangement efficiently converts motor rotational power into stable airflow and strong static pressure, minimizing internal turbulence, energy loss, and mechanical noise.
What is the purpose of the metal protective mesh on the LWERC fan?
The robust inlet metal protective mesh prevents accidental operator contact with rotating internal components and blocks larger foreign debris or objects from entering the fan housing.
What is the noise level during continuous operation?
All standard models in the LWERC series maintain a strictly controlled operating noise level of 62 dB(A), making them well-suited for continuous indoor ventilation in workshops and equipment rooms.
Can LONGWELL customize mounting dimensions or electrical leads for OEM projects?
Yes. LONGWELL provides full OEM/ODM customization services including special mounting foot dimensions, tailored cable harness lengths, connector types, and private label branding.
Need a Quote or Custom Specs?
Tell us your airflow, static pressure, and installation requirements — our engineers will size the right LWERC model and quote within 24 hours.
