Description
Portable Safe Axial Fan
Industrial-grade mobile ventilation that one person can carry, plug in, and reposition in seconds. The LWSFP pairs a precision-cast aluminum wheel with an all-copper motor and a rubber-foot stand, so it goes wherever the work is — construction sites, confined spaces, workshops, or emergency response.
Key Technical Features
Six practical advantages that make the LWSFP the go-to portable fan on industrial jobs.
Pure Copper Motor
An all-copper motor with thickened copper-core coils keeps temperature rise low and holds output steady across long shifts.
7 Aluminum Blades
Seven precision-cast aluminum alloy blades, dynamically balanced so the wheel runs smooth instead of wobbling on uneven floors.
High Airflow
Large-diameter axial blades move up to 10,000 m³/h through the housing, clearing fumes and swapping stale air out fast.
Easy to Move
Top carry handle plus four rubber-base feet let one person pick it up, place it, and aim it wherever the air needs to go.
Safe & Reliable
Thickened steel casing, even weld seams, and a sturdy front grille keep hands, dust, and debris away from the spinning wheel.
Long-Lasting
The aluminum wheel sheds corrosion and the copper motor holds its cool under continuous duty, giving you years of service.
Technical Specifications
LWSFP Series dimensions and performance data across 6 models.
Dimensions (mm)
| Model | A — Air Inlet | B — Duct Length | H — Overall Duct Height | F — Air Outlet | Duct Inner Diameter |
|---|---|---|---|---|---|
| LWSFP-2A-0.15-2P-1-001 | 269 | 345 | 306 | 239 | 210 |
| LWSFP-2.5A-0.25-2P-1-001 | 329 | 336 | 373 | 292 | 261 |
| LWSFP-3A-0.37-2P-1-001 | 365 | 340 | 405 | 333 | 306 |
| LWSFP-3.5A-0.55-2P-1-001 | 436 | 368 | 471 | 394 | 364 |
| LWSFP-4A-0.9-2P-1-001 | 470 | 370 | 511 | 434 | 406 |
| LWSFP-5A-0.75-4P-1-001 | 575 | 468 | 628 | 539 | 507 |
Performance Data
| Model | Blade Diameter (mm) | Air Volume (m³/h) | Static Pressure (Pa) | Speed (r/min) | Frequency (Hz) | Power (kW) |
|---|---|---|---|---|---|---|
| LWSFP-2A-0.15-2P-1-001 | 190 | 1500-2100 | 250-420 | 2800 | 50/60 | 0.15 |
| LWSFP-2.5A-0.25-2P-1-001 | 240 | 2700-3300 | 300-450 | 2800 | 50/60 | 0.25 |
| LWSFP-3A-0.37-2P-1-001 | 290 | 3720-3300 | 350-500 | 2800 | 50/60 | 0.37 |
| LWSFP-3.5A-0.55-2P-1-001 | 340 | 4840-5840 | 550-600 | 2800 | 50/60 | 0.55 |
| LWSFP-4A-0.9-2P-1-001 | 390 | 5860-6840 | 750-800 | 2800 | 50/60 | 0.90 |
| LWSFP-5A-0.75-4P-1-001 | 490 | 6800-10000 | 185-200 | 1450 | 50/60 | 0.75 |
Powerful Airflow Performance
The LWSFP wheel is sized for volume. Large-diameter axial blades generate a strong, steady column of air that pushes through the housing and out the duct, so fumes, dust, and hot pockets don't sit around the work area.
Where conventional axial fans trade noise for output, the LWSFP keeps both ends of the curve honest — you get real cubic meters per hour without a screaming decibel footprint. Drop one at the entry of a confined space and you can feel the inlet pulling within seconds.
- Large-diameter axial blades — move air in a wide, steady column
- Fast air circulation — clears stale air and dilutes fumes quickly
- Rubber vibration-damping feet — keep the housing still while the wheel runs wide-open
Precision-Cast Aluminum Alloy Fan Blades
Each LWSFP wheel is cast as a single piece from aluminum alloy, then dynamically balanced on a calibration rig before assembly. The seven-blade geometry moves a high volume of air per revolution while keeping turbulence in check.
Aluminum alloy is significantly lighter than fabricated steel, which takes load off the motor shaft and bearings. The thickened blade root adds material exactly where the wheel absorbs stress, so the wheel holds its shape through thousands of start-stop cycles on busy job sites.
- Precision-cast aluminum alloy — consistent blade profile, no weld seams to weaken the wheel
- Dynamically balanced — reduces vibration and bearing wear from the first hour of use
- Thickened blade design — extended service life even at 2800 r/min
Thickened Carbon Steel Casing
The housing is cut and formed from thickened carbon steel, not the sheet metal you see on cheaper portables. Edges are accurate, the cylindrical wall is rigid, and the welds that close the housing are ground smooth so there are no sharp lips to catch on ducting or wire.
A spray-painted finish seals the steel against rust and hides the scuffs that come with daily on-site handling. Drop the fan off a tailgate or knock it against a scaffold — the casing absorbs the impact and keeps the motor and wheel properly aligned.
- Thickened steel wall — resists warping under rough on-site handling
- Smooth, even weld seams — no snag points, better fatigue life
- Spray-painted finish — corrosion-resistant, easy to wipe clean
High-Power All-Copper Motor
The motor at the heart of the LWSFP is wound with thickened copper-core coils. Pure copper conducts current with less loss and sheds heat faster than aluminum-wire alternatives, which is what lets the fan hold its rated output during a full shift.
Cooler windings mean longer insulation life and a lower chance of nuisance trips on sites with marginal power. The motor is direct-coupled to the wheel — no belt, no pulley, no scheduled tension checks.
- Thickened copper-core coils — strong power and low temperature rise
- High airflow output — capacity matched to the 7-blade aluminum wheel
- Long service life — windings run cool under continuous duty
Portable Mobility Design
The LWSFP is built around mobility. A wide, ergonomic carry handle sits centered on top of the housing, so one person can lift the fan, walk it to the next station, and set it down without help.
Four rubber-base feet spread the weight, keep the housing off wet or dirty floors, and absorb vibration before it can skate across a polished concrete slab. The compact cylinder slips into a service van or jobsite container without burning valuable cargo space.
- Integrated carry handle — single-person pickup and repositioning
- Compact cylinder footprint — fits tight spots, corners, and van cargo areas
- Stable four-point stand — no need to bolt down or prop against a wall
Safe & Reliable Operation
Safety starts at the inlet. The protective grille covers the full face of the wheel, blocking hands, loose debris, and ducting tape from getting into the blades. The grille is bolted, not clipped, so it stays on through rough handling.
On the inside, the sealed motor housing keeps dust out of the windings, while the rubber feet keep the unit planted. Operators can run the LWSFP inside a tent, alongside workers, or near a temporary electrical panel without the same worry profile as an open-frame axial fan.
- Full-face protective grille — shields hands and debris from the wheel
- Sealed motor housing — keeps dust and moisture out of the windings
- Stable, low-vibration stand — safe to operate close to people and equipment
Wide Industrial Applications
Nine common deployment scenarios where the portable LWSFP moves air where fixed ventilation cannot reach.
Construction Sites
Move dust, drywall residue, and solvent fumes away from framers, electricians, and finish crews working inside the building shell.
Underground Tunnels
Push breathable air along utility tunnels, metro work faces, and underground passages where permanent duct systems are not yet installed.
Confined Space Ventilation
Force fresh air into tanks, manholes, vaults, and trenches before and during entry, supporting rescue and inspection teams.
Mining Facilities
Dilute airborne dust, diesel exhaust, and methane pockets at underground headings, raises, and surface crushing plants.
Shipyards
Ventilate engine rooms, ballast tanks, and hull compartments during repair, blasting, and coating where welding and solvent work overlap.
Warehouse
Break up hot, stagnant zones in storage and distribution centers without waiting for a permanent HVAC installation.
Workshops
Provide targeted spot ventilation on factory floors where fixed ceiling fans leave dead zones around machines and assembly stations.
Equipment Cooling
Blow cooling air across compressors, switchgear, pump skids, and mobile generators to prevent heat-related shutdowns.
Fire Rescue Ventilation
Deploy in minutes at fire, flood, or hazmat incidents to clear smoke, ventilate voids, or supply fresh air to rescue 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, 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 LWSFP portable safe axial fan.
Is the LWSFP easy to move between jobs?
Yes. The LWSFP is built around an integrated top carry handle and four rubber-base feet. The rubber feet double as vibration-damping pads, so the fan stands stable on rough surfaces and resists skating or floor scuffing while you reposition it.
What material are the fan blades made of?
The wheel uses precision-cast aluminum alloy. Each LWSFP impeller carries seven blades, dynamically balanced and thickened for long service life. Aluminum keeps the wheel light so the motor starts easily and bearing wear stays low over thousands of operating hours.
Can the LWSFP run continuously?
Yes. The high-power all-copper motor uses thickened copper-core coils that hold temperature rise low under load. The fan is rated for continuous duty in industrial environments, with routine maintenance limited mostly to keeping the inlet screen clear.
What power and airflow ranges are available?
Six models are available. 2-pole versions span 0.15 kW (LWSFP-2A) to 0.90 kW (LWSFP-4A) at 2800 r/min. The LWSFP-5A runs at 0.75 kW and 1450 r/min. Air volume ranges from 1,500 m³/h up to 10,000 m³/h depending on the selected model.
Is the casing rugged enough for construction sites?
Yes. The casing is cut and formed from thickened carbon steel with smooth, even weld seams and a spray-painted finish. It absorbs on-site shocks and handles accidental drops better than sheet-metal housings, while the protective front grille keeps hands and debris away from the wheel.
Need a Quote or Custom Specifications?
Tell us your airflow, static pressure, and deployment scenario — our engineers will size the right LWSFP model and provide a quote within 1 business day.
