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

Most motors have a wide tolerance (5V-13V) but may not start below ~7V.

Do more blades mean better performance?

More blades increase static pressure (good for radiators) but are slightly louder. Fewer blades increase airflow (good for ventilation) with lower noise. 7-9 blades is a typical balance.

How do I know if the fan is dying?

Listen for clicking/grinding, check RPM via software (far below spec is a red flag), or power off and flick the blade to check for wobble or stiffness.

20206mm High Air Flow Brushless Cooling Centrifugal DC Blower

Name: 20*20*6mm High Air Flow Brushless Cooling Centrifugal DC Blower
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2242198085

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

20*20*6mm High Air Flow Brushless Cooling Centrifugal DC Blower

US$2.50-3.00

1 Piece

Sample price:US$2.50/piece.Request sample

Product profile

Customization

Available

Material

Aluminum Fan

Blade Material

PBT 94ulv

Model NO.

2006 DC Blower

Type

DC Blower Fan

Electric Current Type

Mounting

Free Standing

Certification

RoHS, ISO, CE

Transport Package

Paper Box

Specification

20*20*6mm

Origin

China

Production Capacity

100000 Pieces/Year

Key features

Customization Options: Supports full customization from samples, designs, or specific customer requirements.

Wide Voltage Tolerance: Operates effectively within a 5V to 13V range for flexible power integration.

Multiple Bearing Types: Available in sleeve, hydraulic, and double-ball bearings for varied lifespan and noise needs.

International Certifications: Certified with RoHS, ISO, CE, and FCC standards for global market compliance.

High Quality Assurance: 100% finished product inspection including visual and functional checks.

Durable Aluminum Build: Constructed with aluminum fans and PBT 94ulv blades for stability and heat resistance.

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: ≤4.68h

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 causes fan noise and how to fix it?

Check for loose screws causing vibration, remove dust buildup, lower RPM via BIOS, or consider bearing type (sleeve is quiet but wears out; hydraulic is a middle ground).

Q:Which direction should the fan face?

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

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

3-pin uses DC voltage control for fixed/stepped speeds. 4-pin uses PWM for automatic, precise, and quieter speed control by the motherboard.

Q:How long will the fan last?

Sleeve bearings last ~2-3 years, hydraulic ~4-5 years, and double-ball bearings last 5-10 years with 24/7 tolerance.

Q:How can I make the fan quieter?

Use rubber grommets instead of metal screws, use a low-noise adapter to drop voltage, or adjust BIOS curves to keep RPM low until temperatures rise.