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

Most motors have a wide tolerance and can run from 5V to 13V, though they may not start below approximately 7V.

Does 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. 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 via software like HWMonitor for significant drops, or manually spin the blade to check for wobble or stiffness.

Which direction should the fan face?

Look for arrows on the frame: intake arrows point towards the component (front/side), exhaust arrows point away (rear/top). Tower coolers push air toward the rear exhaust.

DC Blower 35356mm - High-Performance Cooling Fan From China

Name: DC Blower 35*35*6mm - High-Performance Cooling Fan From China
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2131295612

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

DC Blower 35*35*6mm - High-Performance Cooling Fan From China

US$3.60-4.00

1,000 Pieces

Sample price:US$4.00/piece.Request sample

Product profile

Customization

Available

Material

Aluminum Fan

Blade Material

PBT 94ulv

Model NO.

3506 DC Blower

Type

DC Blower Fan

Electric Current Type

Mounting

Free Standing

Certification

RoHS, ISO, CE

Transport Package

Paper Box

Specification

35*35*6mm

Origin

China

Production Capacity

100000 Pieces/Year

Key features

Customization Options: Supports customization from samples, designs, and full customization services.

Wide Voltage Tolerance: Most motors run from 5V to 13V, offering flexible power compatibility.

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

RoHS, ISO, CE Certified: Products hold international certifications ensuring quality and safety standards.

Professional QA/QC: 100% visual and function inspection with 4 dedicated QA/QC inspectors.

Versatile Applications: Suitable for UAVs, automotive, medical, industrial control, and refrigeration systems.

Competitive Pricing: Provides high-quality cooling products with competitive prices and fast delivery.

Established Manufacturer: ISO9001 certified factory with over 5 years of export experience since 2016.

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: ≤3.02h

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 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, double-ball is louder).

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

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

Q:How long does the fan last based on bearing type?

Sleeve bearing lasts ~2-3 years, hydraulic ~4-5 years, and double-ball bearing lasts 5-10 years with 24/7 operation.

Q:How can I make the fan quieter?

Use rubber pegs instead of metal screws, use an inline resistor or low-noise adapter to reduce voltage, or adjust the BIOS fan curve to keep RPM low.

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

Connect to the motherboard header for speed control (ideal for 4-pin PWM). Connecting to PSU Molex runs it at 12V full speed, which is simpler but noisier.