Should I connect the fan to the motherboard or power supply?

Connect to the motherboard header for speed control (best with 4-pin PWM) or PSU Molex for 12V full speed. Keep splitter usage under 1A per header.

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

Motors have wide tolerance and run from 5V to 13V, though they might not start below approximately 7V.

Does having more blades mean better performance?

More blades increase static pressure but add noise, while fewer blades increase airflow and reduce noise. A balance of 7-9 blades is typical.

How do I know if the fan is dying?

Listen for clicking or grinding sounds, check RPM drops using monitoring software, or manually flick the blade to check for wobble and stiffness.

505020mm Compact Design DC Blower Fan for Humidifier Air Circulation

Name: 50*50*20mm Compact Design DC Blower Fan for Humidifier Air Circulation
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2152457282

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

50*50*20mm Compact Design DC Blower Fan for Humidifier Air Circulation

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

Compact Design: 50*50*20mm size suitable for notebooks, projectors, UAVs, and VR headsets.

Ultra-Quiet Operation: Features efficient heat dissipation with low noise for stable device performance.

High Durability: Double-ball bearings offer 5-10 years lifespan with 24/7 tolerance.

Full Customization: Customization available from samples, designs, or full specifications.

Wide Voltage Tolerance: Motors operate effectively from 5V to 13V with wide tolerance.

Multiple Bearing Options: Available in sleeve, hydraulic, and double-ball bearing types.

RoHS and CE Certified: Meets FCC, CE, and ROHS standards for quality and safety.

ISO9001 Certified: Manufactured under ISO9001:2015 with 100% finished product inspection.

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: ≤4.03h

AI-Powered supplier vetting

SummaryThe supplier provides extensive customization options and has a strong research and development capability, including ODM services and new product development. However, they lack overseas warehouse and showroom capabilities, and do not have overseas agents or participate in trade shows. Their financial data is up-to-date and they hold an ISO9001:2015 certification. Despite having quality assurance processes, the manufacturing capacity seems limited with only two production lines and no ongoing volume reconciliation or outsourcing SOPs.

CertificationsHolds an ISO9001:2015 certificate, indicating compliance with quality management standards.

After-Sales capabilityHas clear procedures and records for handling customer complaints and implementing corrective actions.

Financial creditFinancial data is current, with information available up to the last three years, demonstrating financial stability.

R&D capabilityStrong R&D capabilities with evidence of new product development, though lacking in audit documentation.

Production capacityLimited production capability with only two production lines, and lacks ongoing volume reconciliation and outsourcing SOPs.

Customization capabilityOffers full customization services from samples and designs, with a comprehensive design service capability.

Client casesProvides OEM services for well-known brands, suggesting a history of working with reputable companies.

Product Q&A

Q:What should I do if the fan is too loud?

Check for loose screws causing vibration, remove dust buildup, lower RPM via BIOS, or consider switching bearing types like hydraulic or double-ball.

Q:Which direction should the fan face?

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

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, quieter operation, and precise control.

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 with 24/7 tolerance.

Q:How can I make the fan quieter?

Use rubber grommets instead of screws, use an inline resistor or low-noise adapter, or adjust the BIOS fan curve to keep RPM low until temperature rises.