What should I do if the fan is too loud?

Check for loose screws causing vibration, remove dust buildup, lower RPM via BIOS/software, or consider switching to hydraulic or double-ball bearings.

How do I know if the fan is dying?

Listen for clicking or grinding noises, check if RPM is much lower than spec using monitoring software, or check if blades spin freely without wobble.

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

Yes, connecting to PSU Molex runs it at 12V full speed (simple but noisy). Motherboard headers enable speed control, best with 4-pin PWM.

40X40X7mm PWM Controlled & Variable Speed DC Bracket Cooling Fan for Industrial Control Equipment

Name: 40X40X7mm PWM Controlled & Variable Speed DC Bracket Cooling Fan for Industrial Control Equipment
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2153637182

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

US$2.30

500-4,999 Pieces

US$1.00

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.

FX4007

Type

DC Frameless Bracket 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

PWM & Variable Speed Control: Supports 4-pin PWM for precise, quiet auto speed control and 3-pin DC voltage control.

High Durability Bearings: Double-ball bearing lasts 5-10 years with 24/7 tolerance; hydraulic bearing offers 4-5 years.

Wide Voltage Tolerance: Operates effectively on 5V-13V, ensuring compatibility with various power sources.

Multi-Scenario Adaptability: Suitable for notebooks, UAVs, VR headsets, and industrial equipment with compact design.

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

Certified Quality Assurance: ISO9001 certified with FCC, CE, and ROHS standards ensuring high quality and safety.

Ultra-Quiet Operation: Features compact design and advanced bearing types for low noise in office and daily use.

Professional Technical Support: Provides expert guidance on installation, troubleshooting, and optimal fan curve adjustments.

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 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 auto speed control, offering quieter and more precise operation. A 4-pin fan on a 3-pin header runs at full speed.

Q:How long will the fan last?

Sleeve bearings last ~2-3 years. Hydraulic bearings last ~4-5 years. Double-ball bearings last 5-10 years and are tolerant of 24/7 operation.

Q:How can I make the fan quieter?

Use rubber pegs to reduce vibration, use a low-noise adapter to lower voltage, or adjust the BIOS fan curve to keep RPM low until temperature increases.

Q:Which direction should the fan face?

Check arrows on the frame: intake (cool air in) is usually front/side, and exhaust (hot air out) is usually rear/top. Tower coolers push air toward the rear exhaust.

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

The fan has a wide voltage tolerance and can run on 5V-13V. It might not start below ~7V, but will spin at 5V.