What causes the fan to be too loud?

Noise can result from loose screws causing vibration, dust buildup increasing resistance, or the bearing type (e.g., sleeve bearings wear out).

How do I know if the fan is dying?

Listen for clicking or grinding sounds, check if RPM is significantly lower than spec, or see if blades wobble or feel stiff when spun manually.

Can I connect the fan to a power supply?

Yes, connecting to a PSU Molex runs the fan at 12V full speed. However, motherboard headers are better for speed control, especially with 4-pin PWM fans.

80X80X20mm 24V 4000rpm Variable Speed Axial Flow Fan for Intelligent Temperature Control System

Name: 80X80X20mm 24V 4000rpm Variable Speed Axial Flow Fan for Intelligent Temperature Control System
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2158916512

Shanghai, ChinaFengxia Motor (Shanghai) Co., Ltd.

US$2.10

500-4,999 Pieces

US$1.50

5,000+ Pieces

Sample price:US$4.00/piece.Request sample

Product profile

Customization

Available

Material

Plastic-Iron-Copper-Magnet

Blade Material

PBT 94ulv

Model NO.

FD8020

Type

DC Axial Flow Fan

Electric Current Type

Mounting

Free Standing

Certification

RoHS, ISO, CE

Insulation Resistance

10mωor Over with at DC250V Megger

Ielectric Withstand Voltage

AC500V1s

Ambient Temperature

-10℃~+70℃(Operating) -40℃~+70℃(Storage)

Expected Life

+40° ,30000 Hours

Transport Package

Paper Box

Specification

Customized

Trademark

FUNSHARE

Origin

China

Production Capacity

100000 Pieces/Year

Key features

Wide Voltage Tolerance: Operates reliably within a 5V to 13V input range for versatile power compatibility.

Multiple Bearing Options: Choose from Sleeve, Hydraulic, or Double-ball bearings for varying noise and lifespan needs.

Dual Pin Control: Supports both 3-pin DC voltage control and 4-pin PWM for precise speed adjustment.

High Durability: Double-ball bearings offer 5-10 years lifespan, suitable for 24/7 continuous operation.

Full Customization: OEM/ODM services available with full customization from samples or designs.

Certified Quality: ISO9001 certified with RoHS, CE, and FCC standards ensuring safety and reliability.

Versatile Application: Ideal for notebooks, UAVs, VR headsets, and industrial equipment cooling.

Compact Design: 80x80x20mm size fits space-constrained devices while providing efficient heat dissipation.

Company profile

Importers and ExportersHigh Repeat Buyers Choice

Fengxia Motor (Shanghai) Co., Ltd.

Shanghai, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 5 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤4.19h

AI-Powered supplier vetting

SummaryThe supplier demonstrates strong customization, R&D, OEM/ODM, quality-control, and complaint-handling capabilities. It reports new products within the past year, provides customization from samples and designs through full customization, and serves known brands through OEM. Production includes two lines, inventory capability, defined inspection procedures, and four QA/QC inspectors. However, important operational limitations exist: no available SDK, no overseas agents, branches, warehouse, or showroom, no offline trade-show participation, and only one experienced export-trade employee. Manufacturing controls also show gaps, including no ongoing quantity reconciliation for each batch and no standard operating procedure for outsourced manufacturing. Financial evidence is represented only by years rather than substantive indicators, so credibility cannot be determined. The supplier holds an ISO9001:2015 certificate, but the available information does not establish broader certification coverage.

Supplier typeThe supplier operates as a manufacturer with two production lines, provides OEM and ODM services, offers inventory capability, and accepts FOB and EXW quotations. It also provides full customization, but lacks overseas agents, branches, warehouses, and showrooms.

CertificationsThe supplier reports an ISO9001:2015 certificate. No additional specific certifications are identified in the provided information.

After-Sales capabilityThe supplier has documented and followed procedures for customer complaints and corrective/preventive actions, supporting an established service-response process. However, it has no overseas agents, branches, warehouse, or showroom, which limits demonstrated overseas service infrastructure.

R&D capabilityThe supplier reports new products in the past year, provides ODM services, and assigns R&D personnel to product development, design drawings, production support, and specifications. Nevertheless, it has no available SDK and no design input, output, review, validation, or confirmation documents available for audit.

Production capacityProduction evidence includes two production lines, inventory capability, one-month average lead times in both peak and off-season periods, four QA/QC inspectors, written finished-product inspection instructions, and multiple listed production machines. Controls are weakened by the absence of ongoing batch quantity reconciliation and a standard operating procedure for outsourced manufacturing.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, and full customization, with the same capability reported under both R&D and design services. This directly demonstrates broad customization coverage.

Product Q&A

Q:Why does the fan spin at 5V when labeled 12V?

The motor has a wide voltage tolerance, operating between 5V and 13V. It may not start below approximately 7V.

Q:How can I reduce fan noise?

Use rubber grommets instead of screws, install a low-noise adapter to lower voltage, or adjust the BIOS fan curve to keep RPM low until temperatures rise.

Q:What is the difference between 3-pin and 4-pin fans?

3-pin fans use DC voltage control for fixed or stepped speeds. 4-pin fans use PWM for automatic, precise, and quieter speed control.

Q:How long will the fan last?

Lifespan depends on the bearing: Sleeve (~2-3 years), Hydraulic (~4-5 years), and Double-ball (5-10 years).

Q:Which direction should the fan face?

Check the arrows on the frame. Front/side is typically intake (cool air in), and rear/top is exhaust (hot air out).