Which direction should the fan face?

Follow the arrows on the frame: intake (cool air in) for front/side, and exhaust (hot air out) for rear/top.

How do I know if the fan is dying?

Listen for clicking/grinding noises, check if RPM is much lower than spec, or see if blades wobble or spin stiffly when power is off.

Can I connect the fan to a power supply instead of the motherboard?

Yes, connecting to a PSU Molex runs the fan at 12V full speed. It is simple but noisier than motherboard control.

505020mm High Airflow Low Vibration Mini DC Blower Fan for Air Purifier

Name: 50*50*20mm High Airflow Low Vibration Mini DC Blower Fan for Air Purifier
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2155873972

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

50*50*20mm High Airflow Low Vibration Mini DC Blower Fan for Air Purifier

US$2.85

500-4,999 Pieces

US$2.55

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.

5020

Type

DC Blower 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

Ultra-Quiet Operation: Designed for ultra-quiet performance with options for sleeve, hydraulic, or double-ball bearings.

High Airflow Design: 50x50x20mm mini DC blower fan optimized for high airflow and low vibration in compact spaces.

Wide Voltage Tolerance: Motor supports 5V-13V input, ensuring stable operation even at lower voltages like 5V.

Multiple Bearing Options: Choose from sleeve (2-3 years), hydraulic (4-5 years), or double-ball (5-10 years) bearings.

Certified Quality: ISO9001 certified with RoHS, CE, and FCC compliance for safety and environmental standards.

Full Customization: Offers full customization from samples or designs, including ODM and OEM services.

Versatile Applications: Suitable for air purifiers, notebooks, projectors, UAVs, and VR headsets.

Fast Delivery: Average lead time of one month for both peak and off-season orders.

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: ≤2.81h

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:What can I do if the fan is too loud?

Check for loose screws causing vibration, remove dust buildup, lower RPM via BIOS, or consider switching to hydraulic bearings for a quieter operation.

Q:Why does the fan spin at 5V if the label says 12V?

The motor has a wide voltage tolerance of 5V-13V. It may not start below ~7V but will spin at 5V.

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

3-pin uses DC voltage control for fixed speeds, while 4-pin uses PWM for auto speed control, offering quieter and more precise operation.

Q:How long will the fan last?

Sleeve bearings last ~2-3 years, hydraulic bearings ~4-5 years, and double-ball bearings 5-10 years depending on usage conditions.

Q:How can I make the fan quieter?

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