How do I know if the fan is dying?

Listen for clicking or grinding sounds, check RPM via software for significant drops, or power off and flick the blade to check for wobble or stiffness.

Does more blades mean better performance?

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

35357.2mm Industrial Ventilation Brushless Cooling Centrifugal DC Blower

Name: 35*35*7.2mm Industrial Ventilation Brushless Cooling Centrifugal DC Blower
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2241881425

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

35*35*7.2mm Industrial Ventilation 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.

3507 DC Blower

Type

DC Blower Fan

Electric Current Type

Mounting

Free Standing

Certification

RoHS, ISO, CE

Transport Package

Paper Box

Specification

35*35*7.2mm

Origin

China

Production Capacity

100000 Pieces/Year

Key features

Wide Voltage Tolerance: Operates reliably within a 5V-13V range, ensuring compatibility with various power sources.

Multiple Bearing Options: Choose from sleeve, hydraulic, or double-ball bearings for different noise and lifespan needs.

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

Multi-Industry Application: Widely used in UAVs, automotive, medical, and industrial control equipment cooling.

International Certifications: Products certified with RoHS, CE, FCC, and ISO9001 quality assurance system.

Durable Construction: Aluminum fan and PBT 94ulv blade material ensure long-term stable and durable quality.

100% Quality Inspection: Every finished product undergoes strict visual and functional inspection before shipping.

Professional Technical Support: Provides professional technical guidance and complete customization services for clients.

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: ≤4.75h

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:How can I reduce fan noise?

Use rubber pegs or grommets to cut vibration, use a low-noise adapter to drop voltage, or keep RPM low in BIOS until temperature rises.

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

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

Q:How long does 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 like dust and heat.

Q:Which direction should the fan face?

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

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

Most motors have a wide tolerance running from 5V to 13V, though they may not start below ~7V.