LWFDF4-68 Centrtifugal Fan

Name: LWFDF4-68 Series Centrifugal Fan
Brand: LONGWELL
SKU: LWFDF4-68
Availability: InStock

Category: Industrial Centrifugal Fan

CategoryIndustrial Centrifugal Fan

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Description

Description

LWFDF4-68 Centrifugal Fan | LONGWELL Industrial Fans

LWFDF4-68 Series

Centrifugal Fan

Designed for ventilation systems that require strong airflow, stable operation and flexible drive configurations.

📈

High Airflow

⚙️

Stable Operation

〰️

Low Vibration

💠

Multiple Models

LONGWELL LWFDF4-68 centrifugal fan with direct drive and belt drive configurations

400 - 2,900 r/minSpeed Range

565 - 79,111 m³/hAir Volume Range

167 - 3,442 PaTotal Pressure Range

0.55 - 75 kWMatching Motor Power

Key Features at a Glance

A heavy-duty ventilation platform built for continuous industrial exhaust and HVAC air exchange.

Powerful Airflow

Stable Operation

Low Vibration

Direct & Belt Drive

Thickened Steel Casing

Easy System Integration

Technical Specifications

Complete performance parameters, outline drawings, and dimensional data for the LWFDF4-68 series.

Installation Dimension Sheet

All dimensions are in mm.

Model	Motor Power	Φ1	Φ2	Φ3	n1-d1	A1	A2	A3	a×x	B1	B2	B3	b×y	n2-d2	C1	C2	C3	C4	C5	E	E1	E2	H	H1	L	L1	n3-d3
LWFDF4-68-2.8A	1.1-2	280	306	324	8-Φ10	147	183	211	3×61	206	244	272	4×61	14-Φ8	205	235	300	30	360	566	340	196	370	561	453	122	4-Φ12
LWFDF4-68-2.8A	0.55-4	280	306	324	8-Φ10	147	183	211	3×61	206	244	272	4×61	14-Φ8	205	235	300	30	360	566	340	196	370	561	453	122	4-Φ12
LWFDF4-68-3.15A	1.5-2	320	350	367	8-Φ10	176	206	234	3×68.6	250	282	310	4×70.5	14-Φ8	280	310	360	30	420	651	393	238	420	644	492	139	4-Φ12
LWFDF4-68-3.15A	0.55-4	320	350	367	8-Φ10	176	206	234	3×68.6	250	282	310	4×70.5	14-Φ8	205	235	325	30	385	651	393	238	420	644	482	139	4-Φ12
LWFDF4-68-3.55A	3-2	360	394	416	8-Φ10	190	228	258	3×76	275	313	341	4×78.3	14-Φ8	290	330	395	40	455	720	430	269	460	712	580	153	4-Φ14
LWFDF4-68-3.55A	0.55-4	360	394	416	8-Φ10	190	228	258	3×76	275	313	341	4×78.3	14-Φ8	235	275	365	40	445	720	430	269	460	712	515	153	4-Φ14
LWFDF4-68-4A	4-2	400	440	462	16-Φ10	222	254	282	3×84.6	310	342	370	4×85.5	14-Φ8	285	325	485	40	565	796	472	280	500	774	625	171	4-Φ14
LWFDF4-68-4A	0.75-4	400	440	462	16-Φ10	222	254	282	3×84.6	310	342	370	4×85.5	14-Φ8	235	275	395	40	475	796	472	280	500	774	540	171	4-Φ14
LWFDF4-68-4.5A	7.5-2	450	490	512	16-Φ10	252	282	310	3×94	348	380	408	5×76	16-Φ8	366	416	485	50	585	855	495	315	560	860	723	196	4-Φ14
LWFDF4-68-4.5A	1.1-4	450	490	512	16-Φ10	252	282	310	3×94	348	380	408	5×76	16-Φ8	245	295	400	50	500	855	495	315	560	860	607	196	4-Φ14
LWFDF4-68-5A	15-2	500	550	572	16-Φ10	273	311	339	4×77.8	384	422	450	5×84.4	18-Φ8	400	450	640	50	740	955	595	378	620	970	850	206	4-Φ14
LWFDF4-68-5A	2.2-4	500	550	572	16-Φ10	273	311	339	4×77.8	384	422	450	5×84.4	18-Φ8	265	315	465	50	565	955	595	378	620	970	672	206	4-Φ14

Complete Performance Data

Fully detailed specifications from model 2.8A up to 12.5A.

Model	Speed (r/min)	Matching Motor (kW-p)	Flow Rate (m³/h)	Total Pressure (Pa)
LWFDF4-68-2.8A-1.1-2P-1-001	2900	1.1-2	1131-2262	971-657
LWFDF4-68-2.8A-0.55-4P-1-002	1450	0.55-4	565-1131	245-167
LWFDF4-68-3.15A-1.5-2P-1-001	2900	1.5-2	1825-3435	1246-853
LWFDF4-68-3.15A-0.55-4P-1-002	1450	0.55-4	912-1718	314-216
LWFDF4-68-3.55A-3-2P-1-001	2900	3-2	2708-5013	1608-1108
LWFDF4-68-3.55A-0.55-4P-1-002	1450	0.55-4	1354-2507	402-275
LWFDF4-68-4A-4-2P-1-001	2900	4-2	3984-7281	2069-1432
LWFDF4-68-4A-0.75-4P-1-002	1450	0.75-4	1992-3641	520-353
LWFDF4-68-4.5A-7.5-2P-1-001	2900	7.5-2	5790-10485	2658-1834
LWFDF4-68-4.5A-1.1-4P-1-002	1450	1.1-4	2895-5242	667-461
LWFDF4-68-5A-15-2P-1-001	2900	15-2	8050-14490	3315-2305
LWFDF4-68-5A-2.2-4P-1-002	1450	2.2-4	4025-7245	824-579
LWFDF4-68-6.3A-5.5-4P-1-001	1450	5.5-4	8320-14761	1324-922
LWFDF4-68-6.3A-2.2-6P-1-002	960	2.2-6	5508-9773	579-402
LWFDF4-68-8A-18.5-4P-1-001	1450	18.5-4	17585-30775	2158-1501
LWFDF4-68-8A-5.5-6P-1-002	960	5.5-6	11643-20375	942-657
LWFDF4-68-8A-3-8P-1-003	730	3-8	8853-15493	549-383
LWFDF4-68-10A-55-4P-1-001	1450	55-4	35420-61179	3442-2422
LWFDF4-68-10A-18.5-6P-1-002	960	18.5-6	23450-40505	1510-1059
LWFDF4-68-10A-7.5-6P-1-003	730	7.5-6	17832-30801	873-618
LWFDF4-68-12.5A-55-6P-1-001	960	55-6	45800-79111	2354-1657
LWFDF4-68-12.5A-22-8P-1-002	730	22-8	34828-60157	1368-961
LWFDF4-68-6.3A-22-2P-1-003	2240	22-2	12852-22803	3159-2197
LWFDF4-68-6.3A-15-2P-1-004	2000	15-2	11476-20359	2511-1756
LWFDF4-68-6.3A-11-2P-1-005	1800	11-2	10328-18324	2040-1422
LWFDF4-68-6.3A-5.5-4P-1-006	1400	5.5-4	8032-14251	1236-863
LWFDF4-68-6.3A-4-4P-1-007	1250	4-4	7172-12724	981-687
LWFDF4-68-6.3A-1.5-4P-1-008	900	1.5-4	5164-9162	510-353
LWFDF4-68-8A-37-2P-1-004	1800	37-2	21830-38202	3315-2315
LWFDF4-68-8A-30-2P-1-005	1600	30-2	19404-33958	2619-1834
LWFDF4-68-8A-18.5-2P-1-006	1400	18.5-2	16979-29713	2010-1402
LWFDF4-68-8A-15-4P-1-007	1250	15-4	15159-26528	1599-1118
LWFDF4-68-8A-5.5-4P-1-008	900	5.5-4	10915-19101	834-579
LWFDF4-68-8A-2.2-4P-1-009	630	2.2-4	7641-13371	402-284
LWFDF4-68-10A-37-4P-1-004	1250	37-4	30534-52740	2560-1795
LWFDF4-68-10A-30-4P-1-005	1120	30-4	27358-47256	2050-1442
LWFDF4-68-10A-22-4P-1-006	1000	22-4	24427-42192	1638-1147
LWFDF4-68-10A-11-4P-1-007	800	11-4	19541-33754	1049-736
LWFDF4-68-10A-5.5-4P-1-008	630	5.5-4	15389-26581	647-461
LWFDF4-68-10A-3-4P-1-009	500	3-4	12214-21096	412-284
LWFDF4-68-12.5A-75-4P-1-003	1120	75-4	53434-66388	3207-3040
LWFDF4-68-12.5A-45-6P-1-004	900	45-6	42938-74166	2069-1451
LWFDF4-68-12.5A-30-6P-1-005	800	30-6	38168-65926	1638-1147
LWFDF4-68-12.5A-22-6P-1-006	710	22-6	33874-58509	1285-902
LWFDF4-68-12.5A-11-6P-1-007	560	11-6	26717-46148	804-559
LWFDF4-68-12.5A-4-6P-1-008	400	4-6	19084-32963	412-284

Powerful Airflow Performance

Designed for ventilation systems that require strong airflow, stable operation, and flexible drive configurations.

The LWFDF4-68 series delivers an expansive performance envelope, with air volumes ranging from 565 m³/h for localized extraction up to an immense 79,111 m³/h for major facility ventilation. The robust impeller design accelerates air effectively into the scroll, maintaining high pressure capacity across long duct runs.

High Airflow Capacity — scales up to 79,111 m³/h for large industrial spaces
Stable Pressure Output — easily overcomes heavy filtration and duct resistance
Consistent Ventilation — maintains momentum for reliable air exchange

Powerful Airflow Performance - LWFDF4-68 Centrifugal Fan

Two Drive Configurations for Different Needs

Select a suitable configuration according to the installation space, duct direction, equipment layout, and maintenance requirements.

The series is available in both Direct Drive and Belt Drive formats. Direct Drive eliminates transmission losses and saves space, while Belt Drive separates the motor from the airstream and allows for precise speed tuning via adjustable transmission ratios.

Direct Drive — compact structure, space-saving installation, and simple integration
Belt Drive — separate motor arrangement, flexible installation
Adjustable Transmission Ratio — fine-tune airflow on site (Belt Drive)

Two Drive Configurations: Direct Drive and Belt Drive

Robust Steel Construction

The fan has a thickened carbon steel casing with a quality electrostatic powder coating to ensure durability in harsh environments.

Heavy-gauge scroll housing and reinforced structural components resist wear and surface corrosion. A bolted inlet flange simplifies duct connections, while the heavy-duty base reduces mechanical vibration and eases installation and commissioning.

Thickened Carbon Steel — rigid volute structure limits flex under pressure
Electrostatic Powder Coating — superior resistance to industrial wear and corrosion
Bolted Inlet Flange & Reinforced Base — simplified assembly and vibration reduction

Robust Steel Construction of LWFDF4-68 Centrifugal Fan

Stable Operation for Continuous Duty

A rigid support frame and secure mounting layout help maintain steady air delivery during demanding industrial ventilation.

Every component is engineered for continuous S1 duty. The integrated mounting base anchors the assembly firmly to the floor or platform, preventing shifting. Reliable transmission components ensure that rotational force translates smoothly into steady air delivery without interruption.

Secure Mounting — heavy welded frame prevents movement during operation
Reliable Transmission — optimized belts, pulleys, and bearings for 24/7 use
Steady Air Delivery — consistent volumetric flow for critical plant exhaust

Stable Operation for Continuous Duty - Belt Drive Setup

Suitable Air Medium

Designed for conveying general ventilation air safely and efficiently across varied industrial environments.

The standard LWFDF4-68 configuration is built to handle general exhaust air that falls within safe operational limits. It effectively extracts large volumes of stale air, process heat, and workshop dust, keeping the indoor environment clean and compliant.

Non-corrosive gas — protects the standard carbon steel impeller and housing
Non-self-igniting gas — ensures safe operation in general environments
Safe Air Streams — no substances harmful to personnel or standard fan components

Easy System Integration

Defined inlet and discharge interfaces simplify connection with industrial ventilation and duct systems.

Installation time is reduced through factory-standardized connection points. The unit features a pre-drilled rectangular discharge outlet for main vertical exhaust trunks, and a flanged air inlet to instantly mate with spiral ducting. The stable floor-mount base simplifies pad leveling.

Rectangular Discharge Outlet — straightforward coupling to heavy-duty ductwork
Flanged Air Inlet — ready for round duct transitions
Stable Floor-Mount Base — flat, pre-drilled brackets for rapid anchoring

Easy System Integration with Defined Inlet and Discharge Interfaces

Wide Range of Applications

Built to handle demanding exhaust and ventilation scenarios across commercial and industrial sectors.

Factory Workshops

General air exchange to extract stale air, dust, and excess process heat.

Warehouses & Logistics Centers

High-volume airflow to maintain stable temperatures in large storage facilities.

HVAC Ventilation Systems

Reliable air supply and return capabilities for complex ducted climate networks.

Industrial Equipment Cooling

Provides stable, high-pressure airflow to dissipate heat from production machinery.

Hotels & Commercial Buildings

Efficient ducted ventilation for large commercial complexes and hospitality venues.

General Exhaust Systems

Continuous extraction of non-corrosive stale air from varied working environments.

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.

35+Years of Engineering

30+Countries Served

60+In-House R&D Engineers

5M+Fan Units Shipped / Year

Production & Delivery

Automated lines, computer-balanced impellers and a 100% run-test on every unit, so each LWFDF4-68 fan arrives ready to install.

LONGWELL industrial centrifugal fan factory gallery — production lines, assembly and quality inspection

LONGWELL export packaging and container loading — fans wrapped, crated and loaded into containers for global shipment

Global HVAC&R Exhibitions Participation

Meeting HVAC distributors, project contractors, and OEM engineering teams at international trade fairs worldwide.

LONGWELL participation at global HVAC&R exhibitions with international clients and partners

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.

LONGWELL certification badge ribbon: CE, RoHS, ETL, CCC, UL, LVD, EAC, ISO, BSCI

LONGWELL certificate grid: BSCI, CE, UL/ETL, FCC, ISO 45001:2018, ISO 9001:2015, ISO 14001:2015

Global Market & Client Preference

The LWFDF4-68 series is specified by HVAC distributors, commercial kitchen contractors and OEM clients across Europe, the Middle East, Southeast Asia and the Americas.

LONGWELL global presence — regional offices and partners in USA, Germany, Spain, Poland, Russia, Turkey, China and Dubai

Frequently Asked Questions

Quick technical answers about the LWFDF4-68 centrifugal fan series.

What applications is the LWFDF4-68 centrifugal fan suitable for?

The LWFDF4-68 is designed for general ventilation in factory workshops, warehouses, HVAC systems, and commercial buildings. It is suitable for conveying non-corrosive, non-self-igniting air that does not contain substances harmful to people.

What are the available drive configurations?

It is available in both Direct Drive (for a compact, space-saving footprint) and Belt Drive (for flexible installation and adjustable transmission ratios to fine-tune performance on site).

What air volume and pressure can the LWFDF4-68 provide?

This series covers a very broad performance range: airflow from 565 m³/h up to 79,111 m³/h, and total static pressure from 167 Pa up to 3,442 Pa.

What material is the fan housing made from?

The fan features a thickened carbon steel scroll housing protected by a high-quality electrostatic powder coating, ensuring excellent resistance to wear and corrosion in industrial environments.

How is the fan mounted?

It comes with a reinforced, stable floor-mount base and defined flanged inlet and rectangular discharge interfaces, simplifying integration into existing ductwork and equipment layouts.